WorldWideScience

Sample records for model sd3 airplanes

  1. 76 FR 1985 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2011-01-12

    ... Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes AGENCY: Federal Aviation Administration (FAA..., at an average labor rate of $85 per work hour. Required parts cost about $10 per product. Based on.... The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of the AD on...

  2. 75 FR 46864 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2010-08-04

    ...-0225; Directorate Identifier 2009-NM-203-AD] RIN 2120-AA64 Airworthiness Directives; Short Brothers PLC... this proposed AD, contact Short Brothers PLC, Airworthiness, P.O. Box 241, Airport Road, Belfast, BT3... amend this proposed AD based on those comments. We will post all comments we receive, without change, to...

  3. Modeling of terminal-area airplane fuel consumption

    Science.gov (United States)

    2009-08-01

    Accurate modeling of airplane fuel consumption is necessary for air transportation policy-makers to properly : adjudicate trades between competing environmental and economic demands. Existing public models used for : computing terminal-area airplane ...

  4. 76 FR 41041 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane, Interaction of Systems...

    Science.gov (United States)

    2011-07-13

    ... Conditions No. 25-439-SC] Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane, Interaction... special conditions are issued for the Gulfstream Aerospace LP (GALP) Model G250 airplane. This airplane...

  5. Simple Electromagnetic Modeling of Small Airplanes: Neural Network Approach

    OpenAIRE

    Koudelka, V.; Raida, Zbyněk; Tobola, P.

    2009-01-01

    The paper deals with the development of simple electromagnetic models of small airplanes, which can contain composite materials in their construction. Electromagnetic waves can penetrate through the surface of the aircraft due to the specific electromagnetic properties of the composite materials, which can increase the intensity of fields inside the airplane and can negatively influence the functionality of the sensitive avionics. The airplane is simulated by two parallel dielectric layers (t...

  6. Variable-Structure Control of a Model Glider Airplane

    Science.gov (United States)

    Waszak, Martin R.; Anderson, Mark R.

    2008-01-01

    A variable-structure control system designed to enable a fuselage-heavy airplane to recover from spin has been demonstrated in a hand-launched, instrumented model glider airplane. Variable-structure control is a high-speed switching feedback control technique that has been developed for control of nonlinear dynamic systems.

  7. 75 FR 43878 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-07-27

    ... Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G Airplanes.... Since that NPRM was issued, we have determined that Model FAN JET FALCON SERIES C, D, E, F, and G..., Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G airplanes, and Model MYSTERE-FALCON 20-C5...

  8. 75 FR 79952 - Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN...

    Science.gov (United States)

    2010-12-21

    ... Airworthiness Directives; DASSAULT AVIATION Model Falcon 10 Airplanes; Model FAN JET FALCON, FAN JET FALCON.... (1) DASSAULT AVIATION Model Falcon 10 airplanes, Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E... airplanes Inspection threshold (whichever occurs later) Inspection interval Model FAN JET FALCON, FAN JET...

  9. 76 FR 25229 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane, Dynamic Test Requirements...

    Science.gov (United States)

    2011-05-04

    ... Memorandum ``Side-Facing Seats on Transport Category Airplanes'' and draft Issue Paper ``Dynamic Test...; Special Conditions No. 25-425-SC] Special Conditions: Gulfstream Aerospace LP (GALP) Model G250 Airplane... are issued for the Gulfstream Aerospace LP (GALP) model G250 airplane. This airplane will have a novel...

  10. Simple Electromagnetic Modeling of Small Airplanes: Neural Network Approach

    Directory of Open Access Journals (Sweden)

    P. Tobola

    2009-04-01

    Full Text Available The paper deals with the development of simple electromagnetic models of small airplanes, which can contain composite materials in their construction. Electromagnetic waves can penetrate through the surface of the aircraft due to the specific electromagnetic properties of the composite materials, which can increase the intensity of fields inside the airplane and can negatively influence the functionality of the sensitive avionics. The airplane is simulated by two parallel dielectric layers (the left-hand side wall and the right-hand side wall of the airplane. The layers are put into a rectangular metallic waveguide terminated by the absorber in order to simulate the illumination of the airplane by the external wave (both of the harmonic nature and pulse one. Thanks to the simplicity of the model, the parametric analysis can be performed, and the results can be used in order to train an artificial neural network. The trained networks excel in further reduction of CPU-time demands of an airplane modeling.

  11. 78 FR 63847 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Airplane Electronic System Security...

    Science.gov (United States)

    2013-10-25

    ... design feature associated with the architecture and connectivity capabilities of the airplanes' computer... the comment for an association, business, labor union, etc.). DOT's complete Privacy Act Statement can... architecture for the Embraer Model EMB-550 series of airplanes is composed of several connected networks. This...

  12. 76 FR 37684 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model (Diamond) DA 40 Airplanes...

    Science.gov (United States)

    2011-06-28

    ... Industries GmbH Model (Diamond) DA 40 Airplanes Equipped With Certain Cabin Air Conditioning Systems AGENCY... inspections of the Diamond Model DA 40 airplanes equipped with a VCS installed per Premier Aircraft Service... GmbH Model (Diamond) DA 40 Airplanes Equipped With Certain Cabin Air Conditioning Systems: Docket No...

  13. 76 FR 71865 - Special Conditions: Gulfstream Aerospace Corporation, Model GVI Airplane; Windshield Coating in...

    Science.gov (United States)

    2011-11-21

    ...; Special Conditions No. 25-452-SC] Special Conditions: Gulfstream Aerospace Corporation, Model GVI Airplane... Aerospace Corporation Model GVI airplane. This airplane will have a novel or unusual design feature(s..., Gulfstream Aerospace Corporation (GAC) applied for an FAA type certificate for its new Model GVI passenger...

  14. 76 FR 66660 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Operation Without Normal...

    Science.gov (United States)

    2011-10-27

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA-2011-1172: Notice No. 25-11-17-SC] Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane... Aerospace LP (GALP) Model G280 airplane. This airplane will have a novel or unusual design feature...

  15. 77 FR 69747 - Airworthiness Directives; The Boeing Company Model Airplanes

    Science.gov (United States)

    2012-11-21

    ... cycles after the effective date of this AD.'' The new language in paragraph (i)(1) of the NPRM states... language specified in paragraphs (l) through (n) of the NPRM from paragraph (o) of the NPRM. In the... inclusive. Boeing stated that the NPRM requirements do not differentiate for Model 737-200 series airplanes...

  16. 76 FR 36864 - Special Conditions: Gulfstream Model GVI Airplane; Operation Without Normal Electric Power

    Science.gov (United States)

    2011-06-23

    ... Normal Electric Power AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special... Interface Branch, ANM-111, Transport Standards Staff, Transport Airplane Directorate, Aircraft Certification... Model GVI airplane will be an all-new, two- engine jet transport airplane. The maximum takeoff weight...

  17. 75 FR 80735 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection

    Science.gov (United States)

    2010-12-23

    ... Special Conditions No. 25-10-03-SC] Special Conditions: Gulfstream Model GVI Airplane; High Incidence... airworthiness standards for transport category airplanes associated with the use of high incidence protection... transport airplane with an executive cabin interior. The maximum takeoff weight will be 99,600 pounds, with...

  18. 76 FR 62605 - Airworthiness Directives; Viking Air Limited Model DHC-3 (Otter) Airplanes With Supplemental Type...

    Science.gov (United States)

    2011-10-11

    ... Airworthiness Directives; Viking Air Limited Model DHC-3 (Otter) Airplanes With Supplemental Type Certificate.... That AD applies to Viking Air Limited Model DHC-3 (Otter) airplanes equipped with a Honeywell TPE331... limitations and marking the airspeed indicator accordingly for Viking Air Limited Model DHC-3 (Otter...

  19. 75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-09-28

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  20. 76 FR 28914 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-05-19

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively... B4-605R and B4-622R airplanes; A300 F4-605R and F4-622R airplanes; A300 C4-605R Variant F airplanes...

  1. 76 FR 31800 - Airworthiness Directives; Viking Air Limited Model DHC-3 (Otter) Airplanes

    Science.gov (United States)

    2011-06-02

    ... Airworthiness Directives; Viking Air Limited Model DHC-3 (Otter) Airplanes AGENCY: Federal Aviation... INFORMATION: Discussion Recent analysis by the FAA on the Viking Air Limited Model DHC-3 (Otter) airplanes... new airworthiness directive (AD): 2011-12-02 Viking Aircraft Limited: Amendment 39-16709; Docket No...

  2. 75 FR 61655 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-10-06

    ...-1006; Directorate Identifier 2009-CE-057-AD] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft... airworthiness directive (AD) for all Piper Aircraft, Inc. (Piper) Model PA-28-161 airplanes equipped with.... Piper Model PA-28-161 airplanes modified by STC No. SA03303AT have a similar unsafe design feature that...

  3. 76 FR 73483 - Airworthiness Directives; Gulfstream Aerospace Corporation Model GV and GV-SP Airplanes

    Science.gov (United States)

    2011-11-29

    ... Management Branch, ACE-102A, FAA, Atlanta Aircraft Certification Office (ACO), 1701 Columbia Avenue, College... Airworthiness Directives; Gulfstream Aerospace Corporation Model GV and GV-SP Airplanes AGENCY: Federal Aviation... certain Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. This AD was prompted by...

  4. 75 FR 20265 - Airworthiness Directives; Liberty Aerospace Incorporated Model XL-2 Airplanes

    Science.gov (United States)

    2010-04-19

    ... Office, 1701 Columbia Avenue, College Park, Georgia 30337; telephone: (404) 474-5524; facsimile: (404... Airworthiness Directives; Liberty Aerospace Incorporated Model XL-2 Airplanes AGENCY: Federal Aviation...-08- 05, which applies to certain Liberty Aerospace Incorporated Model XL-2 airplanes. AD 2009-08-05...

  5. 75 FR 30282 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-06-01

    ... Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes AGENCY: Federal Aviation... airworthiness directive (AD) for all Quartz Mountain Aerospace, Inc. Model 11E airplanes. This AD requires you... reference of certain publications listed in this AD. ADDRESSES: Quartz Mountain Aerospace, Inc. is in...

  6. 75 FR 12468 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes

    Science.gov (United States)

    2010-03-16

    ... Aerospace, Inc. Model 11E Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for all Quartz Mountain Aerospace, Inc. Model 11E airplanes. This proposed AD would... 5 p.m., Monday through Friday, except Federal holidays. Quartz Mountain Aerospace, Inc. is in...

  7. 76 FR 81360 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Operation Without Normal...

    Science.gov (United States)

    2011-12-28

    ... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 [Docket No. FAA-2011-1172: Special Conditions No. 25-453-SC] Special Conditions: Gulfstream Aerospace LP (GALP) Model G280... Aerospace LP (GALP) Model G280 airplane. This airplane will have a novel or unusual design feature...

  8. 76 FR 36387 - Airworthiness Directives; Airbus Model A300 Series Airplanes; Model A310 Series Airplanes; and...

    Science.gov (United States)

    2011-06-22

    ... pieces unit with 3 welds (old design) as pictured in Appendix 1 of this [EASA] AD. The welding process of... pre-modification 02447.. Blue and Green. A300 airplanes post-modification 02447. Blue. A300-600 airplanes Blue. A310 airplanes Green. Table 2--Applicable service information Airbus mandatory service...

  9. 76 FR 44245 - Special Conditions: Gulfstream Model GVI Airplane; Limit Engine Torque Loads for Sudden Engine...

    Science.gov (United States)

    2011-07-25

    ... Conditions No. 25-441-SC] Special Conditions: Gulfstream Model GVI Airplane; Limit Engine Torque Loads for... for transport category airplanes. These design features include engine size and the potential torque... engine mounts and the supporting structures must be designed to withstand a ``limit engine torque load...

  10. 77 FR 58970 - Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage

    Science.gov (United States)

    2012-09-25

    ... primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Cindy Ashforth, FAA, International Branch, ANM-116, Transport Airplane Directorate, Aircraft... conditions numbers 3 and 4, below) could allow some deformation in the engine-supporting structure (ultimate...

  11. 76 FR 17022 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection

    Science.gov (United States)

    2011-03-28

    ... Special Conditions No. 25-423-SC] Special Conditions: Gulfstream Model GVI Airplane; High Incidence... for transport category airplanes associated with the use of high incidence protection. The applicable... with an executive cabin interior. The maximum takeoff weight will be 99,600 pounds, with a maximum...

  12. 76 FR 31456 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System: Control...

    Science.gov (United States)

    2011-06-01

    ... electronic flight control system. The applicable airworthiness regulations do not contain adequate or... Design Features The Gulfstream Model GVI airplane has an electronic flight control system and no direct... impending control surface limiting, piloted or auto-flight system control of the airplane might be...

  13. 76 FR 9265 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Flight Control System: Control...

    Science.gov (United States)

    2011-02-17

    ...: Gulfstream Model GVI Airplane; Electronic Flight Control System: Control Surface Position Awareness AGENCY... for transport category airplanes. These design features include an electronic flight control system... Design Features The GVI has an electronic flight control system and no direct coupling from the cockpit...

  14. 75 FR 81417 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes

    Science.gov (United States)

    2010-12-28

    ... Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes AGENCY: Federal Aviation Administration... new airworthiness directive (AD): 2010-26-04 Piper Aircraft, Inc: Amendment 39-16543; Docket No. FAA... times may be Airplane approved for this part. Maintenance Manual Piper PA28-161 TAE 125-01, Doc. No...

  15. 77 FR 50644 - Airworthiness Directives; Cessna Airplane Company Airplanes

    Science.gov (United States)

    2012-08-22

    ... Airworthiness Directives; Cessna Airplane Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for certain Cessna Airplane Company Model 525 airplanes equipped with certain part number (P/N... Aircraft Company (Cessna) 525, 550, and 560 airplanes, where investigation revealed brushes had worn beyond...

  16. 75 FR 16660 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-04-02

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  17. 75 FR 35 - Special Conditions: Airbus Model A318-112 Airplane (S/N 3886); Certification of a Cooktop

    Science.gov (United States)

    2010-01-04

    ... Recommended Practice 85, Rev. E, article titled, ``Air Conditioning Systems for Subsonic Airplanes,'' August 1...; Special Conditions No. 25-398-SC] Special Conditions: Airbus Model A318-112 Airplane (S/N 3886... airplane, as modified by Bizjet, a Lufthansa Technik Company, will have a novel or unusual design feature...

  18. 75 FR 2433 - Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security...

    Science.gov (United States)

    2010-01-15

    ... Conditions No. 25-401-SC] Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security--Protection of Airplane Systems and Data Networks From Unauthorized External Access AGENCY... that effective electronic system security protection strategies are implemented to protect the airplane...

  19. 76 FR 19724 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-04-08

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively... F4-605R and F4-622R airplanes, and Model A300 C4-605R Variant F airplanes; and Model A310-203, -204...

  20. Self-propelled pedestrian dynamics model: Application to passenger movement and infection propagation in airplanes

    OpenAIRE

    Namilae, S.; Srinivasan, A.; Mubayi, A.; Scotch, M.; Pahle, R.

    2017-01-01

    Reducing the number of contacts between passengers on an airplane can potentially curb the spread of infectious diseases. In this paper, a social force based pedestrian movement model is formulated and applied to evaluate the movement and contacts among passengers during boarding and deplaning of an airplane. Within the social force modeling framework, we introduce location dependence on the self-propelling momentum of pedestrian particles. The model parameters are varied over a large design ...

  1. 78 FR 41684 - Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage

    Science.gov (United States)

    2013-07-11

    ...-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model..., Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue SW., Renton, Washington... more-critical airframe supporting structure. Applicability As discussed above, these special conditions...

  2. 76 FR 13075 - Airworthiness Directives; Airbus Model A330-243F Airplanes

    Science.gov (United States)

    2011-03-10

    ... Airworthiness Directives; Airbus Model A330-243F Airplanes AGENCY: Federal Aviation Administration (FAA... recent in-service event the flight crew of a Trent 700 powered A330 aircraft [[Page 13076

  3. 75 FR 7942 - Airworthiness Directives; Airbus Model A310-203, -221, -222 Airplanes; and Model A300 F4-605R and...

    Science.gov (United States)

    2010-02-23

    ... Airworthiness Directives; Airbus Model A310-203, -221, -222 Airplanes; and Model A300 F4-605R and -622R...-222 airplanes, all serial numbers. (2) Airbus Model A300 F4-605R and A300 F4-622R airplanes, all...

  4. Simulation model of a twin-tail, high performance airplane

    Science.gov (United States)

    Buttrill, Carey S.; Arbuckle, P. Douglas; Hoffler, Keith D.

    1992-01-01

    The mathematical model and associated computer program to simulate a twin-tailed high performance fighter airplane (McDonnell Douglas F/A-18) are described. The simulation program is written in the Advanced Continuous Simulation Language. The simulation math model includes the nonlinear six degree-of-freedom rigid-body equations, an engine model, sensors, and first order actuators with rate and position limiting. A simplified form of the F/A-18 digital control laws (version 8.3.3) are implemented. The simulated control law includes only inner loop augmentation in the up and away flight mode. The aerodynamic forces and moments are calculated from a wind-tunnel-derived database using table look-ups with linear interpolation. The aerodynamic database has an angle-of-attack range of -10 to +90 and a sideslip range of -20 to +20 degrees. The effects of elastic deformation are incorporated in a quasi-static-elastic manner. Elastic degrees of freedom are not actively simulated. In the engine model, the throttle-commanded steady-state thrust level and the dynamic response characteristics of the engine are based on airflow rate as determined from a table look-up. Afterburner dynamics are switched in at a threshold based on the engine airflow and commanded thrust.

  5. 75 FR 13239 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-03-19

    ... receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  6. 76 FR 4216 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-01-25

    ..., call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  7. 75 FR 52480 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-08-26

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  8. 76 FR 30295 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2011-05-25

    ... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  9. 75 FR 89 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-01-04

    ... after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer...

  10. 75 FR 71536 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-11-24

    ... of this material at the FAA, call 816-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  11. 75 FR 30272 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Science.gov (United States)

    2010-06-01

    ...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small... found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...

  12. 77 FR 37797 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-06-25

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 series airplanes; Airbus Model A330-200 Freighter series airplanes; Airbus Model A330-300 series airplanes; Airbus Model A340-200 series airplanes; and Airbus Model A340-300 series...

  13. 78 FR 78705 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... all Airbus Model A318 series airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. AD 2010- 24-07 required repetitive inspections of the 80VU rack lower...

  14. 78 FR 70207 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-25

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4- 600R series airplanes; and Model A300 C4-605R Variant F airplanes (collectively called Model A300-600 series airplanes). This AD was...

  15. 78 FR 28152 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0416; Directorate Identifier 2012-NM-144-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A318-111 and -112 airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. The existing AD currently requires repetitive inspections of the 80VU rack lower...

  16. 75 FR 52292 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Science.gov (United States)

    2010-08-25

    ... Industries GmbH Models DA 40 and DA 40F Airplanes AGENCY: Federal Aviation Administration (FAA), Department... new airworthiness directive (AD) for all Diamond Aircraft Industries GmbH Models DA 40 and DA 40F... received information from Diamond Aircraft Industries GmbH that the Models DA 40 and DA 40F airplanes have...

  17. 75 FR 76926 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2010-12-10

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R... airplanes; Model A300 B4-605R and B4-622R airplanes; Model A300 F4-605R and F4-622R airplanes; Model A300 C4...

  18. 75 FR 12667 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2010-03-17

    ... corroded and cracked. Three additional airplanes were discovered to contain similar corrosion on the ballnut sleeves. The root cause is galvanic corrosion due to an aluminum sleeve installed on a steel... Aerospace, Project Coordinator--Fielding Specialist, Customer Support Engineering, One Learjet Way, P.O. Box...

  19. 75 FR 32255 - Airworthiness Directives; Learjet Inc. Model 60 Airplanes

    Science.gov (United States)

    2010-06-08

    ...) allows for recognition of an under-inflated tire before it reaches a point where the tire would need to... that we withdraw the NPRM. Cloud Nine Aviation states that the AFM requirement of a pre-flight pressure... to all business jets and other large airplanes and to those with high takeoff and landing speeds...

  20. 75 FR 51701 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2010-08-23

    ... holidays. For service information identified in this proposed AD, contact Learjet, Inc., One Learjet Way... between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this... having serial numbers (S/N) 45-002 through 45-4000 inclusive. This proposed AD would apply to airplanes...

  1. 76 FR 37247 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Science.gov (United States)

    2011-06-27

    ... other damage of the case drain tube from the hydraulic pump case installed on the left-hand engine, and..., repetitive inspections for chafing and other damage of the case drain tube from the hydraulic pump case... Requirements of AD 2009-11-13 Repetitive Inspections: Case Drain Tube (g) For airplanes having serial numbers...

  2. Scaling behavior of an airplane-boarding model

    Science.gov (United States)

    Brics, Martins; Kaupužs, Jevgenijs; Mahnke, Reinhard

    2013-04-01

    An airplane-boarding model, introduced earlier by Frette and Hemmer [Phys. Rev. EPLEEE81539-375510.1103/PhysRevE.85.011130 85, 011130 (2012)], is studied with the aim of determining precisely its asymptotic power-law scaling behavior for a large number of passengers N. Based on Monte Carlo simulation data for very large system sizes up to N=216=65536, we have analyzed numerically the scaling behavior of the mean boarding time and other related quantities. In analogy with critical phenomena, we have used appropriate scaling Ansätze, which include the leading term as some power of N (e.g., ∝Nα for ), as well as power-law corrections to scaling. Our results clearly show that α=1/2 holds with a very high numerical accuracy (α=0.5001±0.0001). This value deviates essentially from α≃0.69, obtained earlier by Frette and Hemmer from data within the range 2≤N≤16. Our results confirm the convergence of the effective exponent αeff(N) to 1/2 at large N as observed by Bernstein. Our analysis explains this effect. Namely, the effective exponent αeff(N) varies from values about 0.7 for small system sizes to the true asymptotic value 1/2 at N→∞ almost linearly in N-1/3 for large N. This means that the variation is caused by corrections to scaling, the leading correction-to-scaling exponent being θ≈1/3. We have estimated also other exponents: ν=1/2 for the mean number of passengers taking seats simultaneously in one time step, β=1 for the second moment of tb, and γ≈1/3 for its variance.

  3. Scaling behavior of an airplane-boarding model.

    Science.gov (United States)

    Brics, Martins; Kaupužs, Jevgenijs; Mahnke, Reinhard

    2013-04-01

    An airplane-boarding model, introduced earlier by Frette and Hemmer [Phys. Rev. E 85, 011130 (2012)], is studied with the aim of determining precisely its asymptotic power-law scaling behavior for a large number of passengers N. Based on Monte Carlo simulation data for very large system sizes up to N=2(16)=65536, we have analyzed numerically the scaling behavior of the mean boarding time and other related quantities. In analogy with critical phenomena, we have used appropriate scaling Ansätze, which include the leading term as some power of N (e.g., [proportionality]N(α) for ), as well as power-law corrections to scaling. Our results clearly show that α=1/2 holds with a very high numerical accuracy (α=0.5001±0.0001). This value deviates essentially from α=/~0.69, obtained earlier by Frette and Hemmer from data within the range 2≤N≤16. Our results confirm the convergence of the effective exponent α(eff)(N) to 1/2 at large N as observed by Bernstein. Our analysis explains this effect. Namely, the effective exponent α(eff)(N) varies from values about 0.7 for small system sizes to the true asymptotic value 1/2 at N→∞ almost linearly in N(-1/3) for large N. This means that the variation is caused by corrections to scaling, the leading correction-to-scaling exponent being θ≈1/3. We have estimated also other exponents: ν=1/2 for the mean number of passengers taking seats simultaneously in one time step, β=1 for the second moment of t(b), and γ≈1/3 for its variance.

  4. 75 FR 6865 - Airworthiness Directives; The Boeing Company Model 737-700 (IGW) Series Airplanes Equipped With...

    Science.gov (United States)

    2010-02-12

    ... replacing aging float level switch conduit assemblies, periodically inspecting the external dry bay system... Model 737-700 (IGW) Series Airplanes Equipped With Auxiliary Fuel Tanks Installed in Accordance With... airworthiness directive (AD) for certain Model 737-700 (IGW) series airplanes. This proposed AD would require...

  5. 75 FR 47203 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-11 and MD-11F Airplanes Equipped...

    Science.gov (United States)

    2010-08-05

    ... Airworthiness Directives; McDonnell Douglas Corporation Model MD- 11 and MD-11F Airplanes Equipped With General... Sec. 39.13 by adding the following new AD: 2010-16-03 McDonnell Douglas Corporation: Amendment 39... applies to McDonnell Douglas Corporation Model MD-11 and MD-11F airplanes, certified in any category...

  6. Modeling the Aerodynamics and Performances of a Historic Airplane: the Spanish

    Directory of Open Access Journals (Sweden)

    A. González-Betes

    2003-01-01

    Full Text Available The process of modeling the aerodynamics and performances of a historic airplane is very similar to the conceptual and preliminary design phases of a new plane, with the advantage of knowing the configuration and that the airplane was airworthy; thus it is unnecessary to outline and assess many different alternatives. However, the drag polar, the real performances, stability features, etc, are still unknown. For various reasons (in particular because of two World Wars, or the Civil War in the Spanish case most details of many historical airplanes have been lost.In the present research work, the situation is as follows. In June 1933 the "Cuatro Vientos", a Spanish-built Bréguet XIX Super TR, flew non-stop from Seville to Cuba; a distance of 7500 km (about 4100 nautical miles in around 40 hours. A few days later, in a far less complicated stage between Havana and Mexico, the airplane was lost with its occupants to a storm in the Yucatan peninsula.The modeling considered in this paper starts by addressing the aerodynamic modifications introduced in the airplane for the extremely long flight. Then, with the help of old and present day aerodynamic data and methods the drag polar is estimated. The available engine data is completed and extrapolated to obtain information on power and fuel consumption. Finally, all this data is integrated to provide a reliable and technically sound reproduction of the Seville-Cuba flight.

  7. 78 FR 78694 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-27

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... all Airbus Model A330-200 and -300 series airplanes, and Model A340-200 and -300 series airplanes. AD... certain check valves in the [[Page 78695

  8. 75 FR 50878 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-08-18

    ... Airworthiness Directives; McDonnell Douglas Corporation Model MD- 90-30 Airplanes AGENCY: Federal Aviation... McDonnell Douglas Corporation: Amendment 39-16388. Docket No. FAA-2010-0433; Directorate Identifier 2009-NM..., 2010. Affected ADs (b) None. Applicability (c) This AD applies to McDonnell Douglas Corporation Model...

  9. 77 FR 69568 - Special Conditions: Bombardier Aerospace, Model BD-500-1A10 and BD-500-1A11 Airplanes; Sidestick...

    Science.gov (United States)

    2012-11-20

    ... Aerospace, Model BD-500-1A10 and BD-500-1A11 Airplanes; Sidestick Controllers AGENCY: Federal Aviation... conditions for the Bombardier Aerospace Model BD-500-1A10 and BD-500-1A11 airplanes. These airplanes will... on the comments we receive. Background On December 10, 2009, Bombardier Aerospace applied for a type...

  10. 78 FR 75511 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes...

    Science.gov (United States)

    2013-12-12

    ... Inc., Models BD-500-1A10 and BD- 500-1A11 Series Airplanes; Electronic Flight Control System: Control... Inc. Models BD-500-1A10 and BD-500-1A11 series airplanes. These airplanes will have a novel or unusual... comments, data, or views. The most helpful comments reference a specific portion of the special conditions...

  11. 78 FR 31836 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-05-28

    ... Model EMB-550 airplane is the first of a new family of jet airplanes designed for corporate flight... inadvertent overspeed conditions as well. Section 25.335(b)(1) is intended as a conservative enveloping... or conservative aerodynamic data are used. (a) From an initial condition of stabilized flight at V C...

  12. 78 FR 5146 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Dive Speed Definition With Speed...

    Science.gov (United States)

    2013-01-24

    .... The Model EMB-550 airplane is the first of a new family of jet airplanes designed for corporate flight... inadvertent overspeed conditions as well. Section 25.335(b)(1) is intended as a conservative enveloping... or conservative aerodynamic data are used. (a) From an initial condition of stabilized flight at V C...

  13. 77 FR 69571 - Special Conditions: Embraer S.A., Model EMB-550 Airplane, Limit Pilot Forces for Sidestick Control

    Science.gov (United States)

    2012-11-20

    ... owner operations. The aircraft has a conventional configuration with low wing and T-tail empennage. The primary structure is metal with composite empennage and control surfaces. The Model EMB-550 airplane is...: Todd Martin, FAA, Airframe and Cabin Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft...

  14. 78 FR 72834 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2013-12-04

    ... Airworthiness Directives; SOCATA Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... airworthiness directive (AD) for SOCATA Model TBM 700 airplanes. This proposed AD results from mandatory... review this referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas...

  15. 76 FR 36390 - Airworthiness Directives; The Boeing Company Model 747SP Series Airplanes

    Science.gov (United States)

    2011-06-22

    ... power control modules (PCM). This proposed AD was prompted by a report of a rudder hard-over event on a... rudder PCM manifold, which could result in a hard-over of the rudder surface leading to an increase in... of a Model 747-400 series airplane of a lower rudder hard-over event caused by a lower rudder PCM...

  16. 75 FR 68245 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-11-05

    ...-1043; Directorate Identifier 2010-NM-200-AD] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas... McDonnell Douglas Model MD-90-30 airplanes. This proposed AD would require installing new fire handle... airworthiness directive (AD): McDonnell Douglas Corporation: Docket No. FAA-2010-1043; Directorate Identifier...

  17. 75 FR 38056 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-07-01

    ...-0645; Directorate Identifier 2009-NM-200-AD] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas..., September 9, 2008), for certain McDonnell Douglas Corporation Model MD-90-30 airplanes. That AD requires a... fasteners in the aft mount support fitting of the left and right engines on 29 McDonnell Douglas Corporation...

  18. 75 FR 21528 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-04-26

    ...-0433; Directorate Identifier 2009-NM-117-AD] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas... main landing gear (MLG) during gear extension, damaging the hydraulic system on McDonnell Douglas.... The retract cylinder support fittings for the MLG on McDonnell Douglas Model MD-80 series airplanes...

  19. 75 FR 36577 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-06-28

    ... Airworthiness Directives; McDonnell Douglas Corporation Model MD- 90-30 Airplanes AGENCY: Federal Aviation... Douglas Corporation: Docket No. FAA-2010-0554; Directorate Identifier 2010-NM-082-AD. Comments Due Date (a... supersedes AD 2009-07-04, Amendment 39-15863. Applicability (c) This AD applies to McDonnell Douglas...

  20. 75 FR 80742 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-12-23

    ...-1202; Directorate Identifier 2010-NM-167-AD] RIN 2120-AA64 Airworthiness Directives; McDonnell Douglas... amends Sec. 39.13 by adding the following new airworthiness directive (AD): McDonnell Douglas Corporation... Douglas Corporation Model MD-90-30 airplanes, certificated in any category. Subject (d) Joint Aircraft...

  1. 75 FR 66653 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-10-29

    ... Airworthiness Directives; McDonnell Douglas Corporation Model MD- 90-30 Airplanes AGENCY: Federal Aviation...-15667 (73 FR 52203, September 9, 2008), and adding the following new AD: 2010-22-04 McDonnell Douglas... supersedes AD 2008-18-10, Amendment 39-15667. Applicability (c) This AD applies to McDonnell Douglas...

  2. 75 FR 11433 - Airworthiness Directives; Hawker Beechcraft Corporation Model G58 Airplanes

    Science.gov (United States)

    2010-03-11

    ... certain Hawker Beechcraft Corporation Model G58 airplanes. This AD requires inspecting the installation of... brake reservoir tubing and the heater fuel pump wiring for minimum clearance and installing acceptable... correct inadequate clearance of the brake reservoir tubing and the heater fuel pump wiring, which could...

  3. 76 FR 14346 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes

    Science.gov (United States)

    2011-03-16

    ... Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... been reportedly found on DA 42 Main Landing Gear (MLG) Damper-to-Trailing Arm joints during standard... condition for the specified products. The MCAI states: Cracks have been reportedly found on DA 42 Main...

  4. 76 FR 31457 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes

    Science.gov (United States)

    2011-06-01

    ... Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation... reportedly found on DA 42 Main Landing Gear (MLG) Damper-to-Trailing Arm joints during standard maintenance... DA 42 Main Landing Gear (MLG) Damper-to-Trailing Arm joints during standard maintenance. Depending on...

  5. 77 FR 32006 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection

    Science.gov (United States)

    2012-05-31

    ... Special Conditions No. 25-423-SC] Special Conditions: Gulfstream Model GVI Airplane; High Incidence... pertaining to a high incidence protection system that replaces the stall warning system during normal... the condition existing in the test or performance standard in which V SR is being used. (3) The weight...

  6. 76 FR 6584 - Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes

    Science.gov (United States)

    2011-02-07

    .... Model DHC-8-400 Series Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... area on the rib at Yw-42.000 to ensure adequate electrical bonding, installing spiral wrap on certain cable assemblies where existing spiral wrap does not extend 4 inches past the tie mounts, applying a...

  7. 76 FR 36392 - Airworthiness Directives; Gulfstream Aerospace Corporation Model GV and GV-SP Airplanes

    Science.gov (United States)

    2011-06-22

    ... Aircraft Certification Office (ACO) 1701 Columbia Avenue, College Park, Georgia 30337; phone: 404-474-5566..., Atlanta Aircraft Certification Office (ACO) 1701 Columbia Avenue, College Park, Georgia 30337; telephone... Aerospace Corporation Model GV and GV-SP Airplanes AGENCY: Federal Aviation Administration (FAA), DOT...

  8. 75 FR 7945 - Airworthiness Directives; Augustair, Inc. Models 2150, 2150A, and 2180 Airplanes

    Science.gov (United States)

    2010-02-23

    ... Certification Office (ACO), 1701 Columbia Avenue, College Park, Georgia 30337; fax: (404) 474-5606; e-mail: hal..., FAA, Atlanta Aircraft Certification Office (ACO), 1701 Columbia Avenue, College Park, Georgia 30337... Airworthiness Directives; Augustair, Inc. Models 2150, 2150A, and 2180 Airplanes AGENCY: Federal Aviation...

  9. 75 FR 61345 - Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes

    Science.gov (United States)

    2010-10-05

    ... Airworthiness Directives; Eclipse Aerospace, Inc. Model EA500 Airplanes AGENCY: Federal Aviation Administration... service information identified in this AD, contact Eclipse Aerospace Incorporated, 2503 Clark Carr Loop... Kinney, Aerospace Engineer, Ft. Worth Aircraft Certification Office, FAA, 2601 Meacham Blvd., Fort Worth...

  10. 76 FR 65105 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Isolation or Aircraft...

    Science.gov (United States)

    2011-10-20

    ...-1140; Special Conditions No. 25-450-SC] Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Isolation or Aircraft Electronic System Security Protection From Unauthorized Internal Access AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special conditions; request for...

  11. 76 FR 39763 - Special Conditions: Boeing Model 787-8 Airplane; Interaction of Systems and Structures...

    Science.gov (United States)

    2011-07-07

    ... Conditions No. 25-354A-SC] Special Conditions: Boeing Model 787-8 Airplane; Interaction of Systems and..., electronic flight control system control surface awareness, HIRF protection, limit engine torque loads for... standards. A special condition is needed to require consideration of the effects of systems on the...

  12. 78 FR 65153 - Special Conditions: Learjet Model 45 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-10-31

    ... design feature associated with the architecture and connectivity capabilities of the airplanes' computer... the comment (or signing the comment for an association, business, labor union, etc.). DOT's complete... passengers and two crew members. The proposed Learjet Model 45 avionics architecture is new and novel for...

  13. 76 FR 6581 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-02-07

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively...-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes, certificated in any category, all...

  14. Neural-Based Compensation of Nonlinearities in an Airplane Longitudinal Model with Dynamic-Inversion Control

    Directory of Open Access Journals (Sweden)

    YanBin Liu

    2017-01-01

    Full Text Available The inversion design approach is a very useful tool for the complex multiple-input-multiple-output nonlinear systems to implement the decoupling control goal, such as the airplane model and spacecraft model. In this work, the flight control law is proposed using the neural-based inversion design method associated with the nonlinear compensation for a general longitudinal model of the airplane. First, the nonlinear mathematic model is converted to the equivalent linear model based on the feedback linearization theory. Then, the flight control law integrated with this inversion model is developed to stabilize the nonlinear system and relieve the coupling effect. Afterwards, the inversion control combined with the neural network and nonlinear portion is presented to improve the transient performance and attenuate the uncertain effects on both external disturbances and model errors. Finally, the simulation results demonstrate the effectiveness of this controller.

  15. 75 FR 28480 - Airworthiness Directives; Airbus Model A300 Series Airplanes; Model A300 B4-600, B4-600R, F4-600R...

    Science.gov (United States)

    2010-05-21

    ... Airworthiness Directives; Airbus Model A300 Series Airplanes; Model A300 B4-600, B4-600R, F4-600R Series..., B4-622, B4- 605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes; and Model A310-203...

  16. 76 FR 35344 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-06-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901.... Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  17. 76 FR 3854 - Airworthiness Directives; REIMS AVIATION S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-01-21

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  18. ANALYSIS FOR AERODYNAMICS OF THE SIMPLIFIED MODEL OF A COMMERCIAL AIRPLANE CRUISING AT TRANSONIC SPEED

    OpenAIRE

    KIM YANGKYUN; KIM SUNGCHO

    2010-01-01

    This paper describes the computational analysis and visualization of flow around the model of a commercial airplane, Boeing 747-400. The geometry was realized through reverse engineering technique based on the photo scanning measurement. The steady three-dimensional viscous compressible governing equations were solved in the unstructured grid system. The basic conditions for computation were chosen as the same to those of Boeing 747-400’s cruising state. The high Reynolds turbulence models ar...

  19. 78 FR 9787 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-12

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Airbus [[Page 9788

  20. 78 FR 28159 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-14

    ...-0418; Directorate Identifier 2012-NM-200-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 series airplanes; Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes...

  1. Recent Dynamic Measurements and Considerations for Aerodynamic Modeling of Fighter Airplane Configurations

    Science.gov (United States)

    Brandon, Jay M.; Foster, John V.

    1998-01-01

    As airplane designs have trended toward the expansion of flight envelopes into the high angle of attack and high angular rate regimes, concerns regarding modeling the complex unsteady aerodynamics for simulation have arisen. Most current modeling methods still rely on traditional body axis damping coefficients that are measured using techniques which were intended for relatively benign flight conditions. This paper presents recent wind tunnel results obtained during large-amplitude pitch, roll and yaw testing of several fighter airplane configurations. A review of the similitude requirements for applying sub-scale test results to full-scale conditions is presented. Data is then shown to be a strong function of Strouhal number - both the traditional damping terms, but also the associated static stability terms. Additionally, large effects of sideslip are seen in the damping parameter that should be included in simulation math models. Finally, an example of the inclusion of frequency effects on the data in a simulation is shown.

  2. 76 FR 42029 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-07-18

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model A300 C4... A300 B4-605R and B4-622R airplanes, Model A300 F4-605R and F4-622R airplanes, and Model A300 C4- [[Page...

  3. 76 FR 39248 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-07-06

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R... B4-605R and B4-622R airplanes; Model A300 F4-605R and F4-622R airplanes; Model A300 C4-605R Variant F...

  4. 78 FR 27015 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-09

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 and A330-300 series airplanes, and Model A340-200 and A340-300 series airplanes... seal on a solenoid. This AD requires, depending on airplane configuration, modifying three flight...

  5. 78 FR 65187 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-300 series airplanes and Model A340-200 and -300 series airplanes. This AD was prompted..., and possibly resulting in loss of control of the airplane. DATES: This AD becomes effective December 5...

  6. A novel approach to the automatic control of scale model airplanes

    OpenAIRE

    Hua , Minh-Duc; Pucci , Daniele; Hamel , Tarek; Morin , Pascal; Samson , Claude

    2014-01-01

    International audience; — This paper explores a new approach to the control of scale model airplanes as an extension of previous studies addressing the case of vehicles presenting a symmetry of revolution about the thrust axis. The approach is intrinsically nonlinear and, with respect to other contributions on aircraft nonlinear control, no small attack angle assumption is made in order to enlarge the controller's operating domain. Simulation results conducted on a simplified, but not overly ...

  7. 75 FR 43397 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Science.gov (United States)

    2010-07-26

    ... Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes AGENCY: Federal... applies to certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46- 350P airplanes. AD 2010-13-07... 23, 2010), which applies to certain Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P airplanes...

  8. The development of coastal diffusion observation method with a model airplane

    International Nuclear Information System (INIS)

    Yamada, Masaharu; Fukuda, Masaaki

    1982-01-01

    A tethered ballon system has been developed in order to take aerial photograph of dye-cloud in times of coastal diffusion experiment. The system has some weakpoints; it can not be used both under strong wind and under on-shore blowing wind. To cover these wind conditions, another method of aerial photography is developed making use of model airplane. Radio controlled airplane on the market is reconstructed to mount 35 mm camera, the shutter of which is handled through the channel ordinarily used to control wheel logs. The procedure of the new system in case of diffusion experiment is similar to that of the tethered balloon system. Observations with this system has been carried out from winter to summer this year. Some results of them are described. (author)

  9. 78 FR 71992 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-02

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... certain Airbus Model A318-100 and A319-100 series airplanes, A320-111 airplanes, A320-200 series airplanes... identified in this AD, contact Airbus, Airworthiness Office--EIAS, 1 Rond Point Maurice Bellonte, 31707...

  10. 77 FR 6023 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-07

    ...-0038; Directorate Identifier 2011-NM-209-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airplanes and Model A310-203, -204, - 221, and -222 airplanes. This proposed AD was prompted by a report of... explosion and consequent loss of the airplane. DATES: We must receive comments on this proposed AD by March...

  11. 76 FR 38069 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-06-29

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively...-603, B4-620, B4-622, B4-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes; and Model...

  12. 75 FR 27956 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2010-05-19

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively...-203, and B4-203 airplanes; Model A300 B4-601, B4- 603, B4-620, B4-622, B4-605R, B4-622R, F4-605R, F4...

  13. 76 FR 18960 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-04-06

    ... B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R Variant F Airplanes (Collectively... July 20, 2005; have been performed in service. (2) Airbus Model A300 B4-605R, B4-622R, F4-605R, and F4... C4-600R, and A300 F4-600R series airplanes (fitted with a trim tank), all serial numbers, except...

  14. 75 FR 47199 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30...

    Science.gov (United States)

    2010-08-05

    ... Airworthiness Directives; McDonnell Douglas Corporation Model DC- 9-10 Series Airplanes, DC-9-30 Series... existing airworthiness directive (AD), which applies to all McDonnell Douglas Model DC-9-10 series..., 2010). That AD applies to all McDonnell Douglas Corporation Model DC-9-10 series airplanes, DC-9-30...

  15. 76 FR 36863 - Special Conditions: Gulfstream Model GVI Airplane; Electronic Systems Security Protection From...

    Science.gov (United States)

    2011-06-23

    ... Security Protection From Unauthorized External Access AGENCY: Federal Aviation Administration (FAA), DOT... for Gulfstream GVI airplanes. 1. The applicant must ensure electronic system security protection for... that effective electronic system security protection strategies are implemented to protect the airplane...

  16. 77 FR 38467 - Special Conditions: Gulfstream Aerospace LP (GALP), Model Gulfstream G280 Airplane; Isolation or...

    Science.gov (United States)

    2012-06-28

    ... Gulfstream G280 Airplane; Isolation or Aircraft Electronic System Security Protection From Unauthorized... airplane systems and the passenger entertainment services. Applicability As discussed above, these special... Aircraft Electronic System Security Protection from Unauthorized Internal Access. The applicant must ensure...

  17. 78 FR 73993 - Special Conditions: Cessna Model 680 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-12-10

    ... design feature associated with the architecture and connectivity capabilities of the airplanes' computer... vulnerabilities to the airplanes' systems. The proposed network architecture includes the following connectivity.... Operator business and administrative support systems, and 3. Passenger entertainment systems, and access by...

  18. GRAPHIC-ANALYTICAL METHODS FOR CALCULATING THE GRAVITY CENTER OF A MODEL AIRPLANE

    OpenAIRE

    DIACONESCU Olivian

    2012-01-01

    This paper presents a stage of the realization of an airplane capable to work with low capacity motors between 2.5 cmc and 4 cmc, as it presents the gravity center calculation. Firstly for an airplane to fly properly we must calculate the gravity center, the top speed which is necessary for picking the servomotors that equip the airplane.

  19. 75 FR 38017 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-9-10 Series Airplanes, DC-9-30...

    Science.gov (United States)

    2010-07-01

    ... Airworthiness Directives; McDonnell Douglas Corporation Model DC- 9-10 Series Airplanes, DC-9-30 Series... previously to all known U.S. owners and operators of the McDonnell Douglas Corporation airplanes identified... INFORMATION: On July 15, 2009, we issued AD 2009-15-16, which applies to all McDonnell Douglas Model DC-9-10...

  20. 76 FR 441 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-01-05

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R...-622, B4-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes, certificated in any category...

  1. 78 FR 65233 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes...

    Science.gov (United States)

    2013-10-31

    ... provide different levels of protection from post-crash fire threats than similar aircraft constructed from... turbofan engines. Flight controls are fly-by-wire systems with two passive/uncoupled side sticks. Avionics... models of airplanes. Maximum operating altitude is 41,000 feet for both models of airplanes. The fuselage...

  2. 75 FR 75868 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Science.gov (United States)

    2010-12-07

    ... Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes AGENCY: Federal... of the Thielert Engine Owners Group commented that the Model DA 42 has the same door design and the same unsafe condition. He recommended that the AD also apply to the Model DA 42. The FAA has discussed...

  3. 76 FR 41142 - Special Conditions; Cessna Aircraft Company Model M680 Airplane; Lithium-ion Battery Installations

    Science.gov (United States)

    2011-07-13

    ... Company Model M680 Airplane; Lithium-ion Battery Installations AGENCY: Federal Aviation Administration... design feature associated with Lithium-ion batteries. The applicable airworthiness regulations do not...) T00012WI for installation of Lithium-ion batteries in the Model 680. The Model 680 is a twin-engine, medium...

  4. A statistical mechanics model for free-for-all airplane passenger boarding

    Energy Technology Data Exchange (ETDEWEB)

    Steffen, Jason H.; /Fermilab

    2008-08-01

    I discuss a model for free-for-all passenger boarding which is employed by some discount air carriers. The model is based on the principles of statistical mechanics where each seat in the aircraft has an associated energy which reflects the preferences of travelers. As each passenger enters the airplane they select their seats using Boltzmann statistics, proceed to that location, load their luggage, sit down, and the partition function seen by remaining passengers is modified to reflect this fact. I discuss the various model parameters and make qualitative comparisons of this passenger boarding model with those that involve assigned seats. The model can be used to predict the probability that certain seats will be occupied at different times during the boarding process. These results might provide a useful description of this boarding method. The model is a relatively unusual application of undergraduate level physics and describes a situation familiar to many students and faculty.

  5. A statistical mechanics model for free-for-all airplane passenger boarding

    Science.gov (United States)

    Steffen, Jason H.

    2008-12-01

    I discuss a model for free-for-all passenger boarding which is employed by some discount air carriers. The model is based on the principles of statistical mechanics, where each seat in the aircraft has an associated energy which reflects the preferences of travelers. As each passenger enters the airplane they select their seats using Boltzmann statistics, proceed to that location, load their luggage, sit down, and the partition function seen by remaining passengers is modified to reflect this fact. I discuss the various model parameters and make qualitative comparisons of this passenger boarding model with those that involve assigned seats. The model can be used to predict the probability that certain seats will be occupied at different times during the boarding process. These results might provide a useful description of this boarding method. The model is a relatively unusual application of undergraduate level physics and describes a situation familiar to many students and faculty.

  6. A statistical mechanics model for free-for-all airplane passenger boarding

    International Nuclear Information System (INIS)

    Steffen, Jason H.; Fermilab

    2008-01-01

    I discuss a model for free-for-all passenger boarding which is employed by some discount air carriers. The model is based on the principles of statistical mechanics where each seat in the aircraft has an associated energy which reflects the preferences of travelers. As each passenger enters the airplane they select their seats using Boltzmann statistics, proceed to that location, load their luggage, sit down, and the partition function seen by remaining passengers is modified to reflect this fact. I discuss the various model parameters and make qualitative comparisons of this passenger boarding model with those that involve assigned seats. The model can be used to predict the probability that certain seats will be occupied at different times during the boarding process. These results might provide a useful description of this boarding method. The model is a relatively unusual application of undergraduate level physics and describes a situation familiar to many students and faculty

  7. MODELING OF AN AIRPLANE WING MOMENTS INDUCED BY ATMOSPHERIC TURBULENCE

    Directory of Open Access Journals (Sweden)

    Anna Antonova

    2014-07-01

    Full Text Available We have used Diederich’s theory of wingspan average correlation functions to obtain analytical expressions for the local spectral density of aircraft wing moments induced by horizontal and vertical wind gusts. We have assumed that the correlation functions of atmospheric turbulence belong to the Bullen family which includes both partial cases of known Dryden’s model as well as von Karman’s  model.

  8. Amphibious Airplane

    Science.gov (United States)

    1986-01-01

    The airplane pictured is the new Air Shark I, a four-place amphibian that makes extensive use of composite materials and cruises at close to 200 miles per hour under power from a 200-horsepower engine. Air Shark I is a "homebuilt" airplane, assembled from a kit of parts and components furnished by Freedom Master Corporation, Satellite Beach, Florida. The airplane incorporates considerable NASA technology and its construction benefited from research assistance provided by Kennedy Space Center (KSC) In designing the Shark, company president Arthur M. Lueck was able to draw on NASA's aeronautical technology bank through KSC's computerized "recon" library. As a result of his work at KSC, the wing of the Air Shark I is a new airfoil developed by Langley Research Center for light aircraft. In addition, Lueck opted for NASA-developed "winglets," vertical extensions of the wing that reduce drag by smoothing air turbulence at the wingtips. The NASA technology bank also contributed to the hull design. Lueck is considering application of NASA laminar flow technology-means of smoothing the airflow over wing and fuselage-to later models for further improvement of the Shark's aerodynamic efficiency. A materials engineer, Lueck employed his own expertise in designing and selecting the materials for the composite segments, which include all structural members, exposed surfaces and many control components. The materials are fiber reinforced plastics, or FRP They offer a high strength-to-weight ratio, with a nominal strength rating about one and a half times that of structural steel. They provide other advantages: the materials can be easily molded into finished shapes without expensive tooling or machining, and they are highly corrosion resistant. The first homebuilt to be offered by Freedom Master, Air Shark I completed air and water testing in mid-1985 and the company launched production of kits.

  9. 78 FR 76254 - Special Conditions: Airbus, Model A350-900 Series Airplane; Control Surface Awareness and Mode...

    Science.gov (United States)

    2013-12-17

    ...-0899; Notice No. 25-13-15-SC] Special Conditions: Airbus, Model A350-900 Series Airplane; Control... of proposed special conditions. SUMMARY: This action proposes special conditions for the Airbus Model..., data, or views. The most helpful comments reference a specific portion of the proposed special...

  10. 77 FR 24137 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-04-23

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule... Register. That AD applies to all Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, Model... Airbus Model A300 B4-600, B4- 600R, and F4-600R series airplanes, Model A300 C4-605R Variant F airplanes...

  11. 78 FR 53640 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 Freighter series airplanes; Model A330-200 and - 300 series airplanes, and Model... of the forward or aft cargo door. To address this condition, Airbus issued four separate Alert...

  12. 78 FR 70003 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-22

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 series airplanes; Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model...

  13. 77 FR 64701 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-23

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 series airplanes; Model A310 series airplanes; and Model A300 B4-600, B4-600R, and F4... that the AD be effective after Airbus completes certifying the improved design for the fuel pump half...

  14. 77 FR 42952 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-23

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318-112 and -121 airplanes; Model A319-111, -112, -115, - 132, and -133 airplanes; Model... MCAI states: During structural part assembly in Airbus production line, some nuts Part Number (P/N...

  15. 77 FR 65799 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 freighter series airplanes, Model A330-200 and - 300 series airplanes, and Model... [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-21-20 Airbus: Amendment 39...

  16. 77 FR 5990 - Special Conditions: Learjet Inc., Model LJ-200-1A10 Airplane, Pilot-Compartment View Through...

    Science.gov (United States)

    2012-02-07

    ..., and the FAA must issue a finding of regulatory adequacy pursuant to Sec. 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues special conditions, as defined in 14 CFR 11.19, in... novel or unusual design features: The Model LJ-200-1A10 airplane flight deck design incorporates a...

  17. 75 FR 22512 - Airworthiness Directives; Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2010-04-29

    ... Airworthiness Directives; Piaggio Aero Industries S.p.A. Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation... presence of potential ignition sources such as electrical equipment and connectors. As a consequence, this..., agree with their substance. But we might have found it necessary to use different words from those in...

  18. 78 FR 52107 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Science.gov (United States)

    2013-08-22

    ... passengers. The Model 777-200, -300, and -300ER series airplanes have fly-by-wire controls, fully software... lead acid batteries and nickel cadmium batteries. These special conditions provide an equivalent level... characteristics that differ significantly from those of the nickel cadmium and lead acid rechargeable batteries...

  19. 76 FR 7694 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-02-11

    ... Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes AGENCY: Federal Aviation... Piaggio service bulletin number specified in the Alternative Methods of Compliance (AMOCs) section is..., except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received...

  20. 76 FR 4056 - Airworthiness Directives; PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P-180 Airplanes

    Science.gov (United States)

    2011-01-24

    ..., is considered the State of Design for PIAGGIO AERO INDUSTRIES S.p.A Model PIAGGIO P- 180 airplanes. A... ensuring that the drain lines of the environmental unit condenser are not clogged. Since AD 2007-24-15... condition described previously is likely to exist or develop in other products of the same type design. AD...

  1. 77 FR 69569 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: Pitch and...

    Science.gov (United States)

    2012-11-20

    ... attitude protection functions through the normal modes of the electronic flight control system that will...-1211; Notice No. 25-12-10-SC] Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: Pitch and Roll Limiting Functions AGENCY: Federal Aviation Administration (FAA), DOT...

  2. 78 FR 76251 - Special Conditions: Airbus, Model A350-900 Series Airplane; Electronic System Security Protection...

    Science.gov (United States)

    2013-12-17

    ... the comment (or signing the comment for an association, business, labor union, etc.). DOT's complete... design feature: The digital systems architecture for the Airbus Model A350-900 series airplanes is composed of several connected networks. This proposed network architecture is used for a diverse set of...

  3. Dynamics Modeling and Simulation of Large Transport Airplanes in Upset Conditions

    Science.gov (United States)

    Foster, John V.; Cunningham, Kevin; Fremaux, Charles M.; Shah, Gautam H.; Stewart, Eric C.; Rivers, Robert A.; Wilborn, James E.; Gato, William

    2005-01-01

    As part of NASA's Aviation Safety and Security Program, research has been in progress to develop aerodynamic modeling methods for simulations that accurately predict the flight dynamics characteristics of large transport airplanes in upset conditions. The motivation for this research stems from the recognition that simulation is a vital tool for addressing loss-of-control accidents, including applications to pilot training, accident reconstruction, and advanced control system analysis. The ultimate goal of this effort is to contribute to the reduction of the fatal accident rate due to loss-of-control. Research activities have involved accident analyses, wind tunnel testing, and piloted simulation. Results have shown that significant improvements in simulation fidelity for upset conditions, compared to current training simulations, can be achieved using state-of-the-art wind tunnel testing and aerodynamic modeling methods. This paper provides a summary of research completed to date and includes discussion on key technical results, lessons learned, and future research needs.

  4. ANALYSIS FOR AERODYNAMICS OF THE SIMPLIFIED MODEL OF A COMMERCIAL AIRPLANE CRUISING AT TRANSONIC SPEED

    Directory of Open Access Journals (Sweden)

    KIM YANGKYUN

    2010-12-01

    Full Text Available This paper describes the computational analysis and visualization of flow around the model of a commercial airplane, Boeing 747-400. The geometry was realized through reverse engineering technique based on the photo scanning measurement. The steady three-dimensional viscous compressible governing equations were solved in the unstructured grid system. The basic conditions for computation were chosen as the same to those of Boeing 747-400’s cruising state. The high Reynolds turbulence models are tried. The angle of attack is varied to investigate the effect of the flight conditions to the aerodynamic performance. And flow and aerodynamic characteristics due to the existence of winglet were compared.

  5. 78 FR 41280 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A319-112, -113, and -132 airplanes; Model A320-211, -212, -214, -231, and -232 airplanes... A319 aeroplane on which Airbus modification (mod.) 22058 had been embodied in production. Airbus mod...

  6. 78 FR 47537 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-06

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... all Airbus Model A330-200 and -300 series airplanes, and Model A340-200 and -300 series airplanes. AD... by application of Airbus modification 49590/Service Bulletin (SB) A330-27-3085 [or SB A340-27-4089...

  7. 77 FR 76228 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-27

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-300 series airplanes and Model A340-200 and -300 series airplanes. This AD was prompted... operational test. This [EASA] AD also requires reporting operational test results to Airbus. You may obtain...

  8. 78 FR 52414 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-23

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A320-214, -232 and -233 airplanes; and Model A321-211, - 213, and -231 airplanes. This AD... Service Information Airbus requested that we revise the NPRM (77 FR 63270, October 16, 2012) to reflect...

  9. 77 FR 16430 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model C4-605R Variant F airplanes.../N A5231007000600. This [EASA] AD has been corrected to make clear that the use of Airbus SB A310...

  10. 78 FR 69594 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-20

    ...-0972; Directorate Identifier 2002-NM-009-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airworthiness directive (AD) for all Airbus Model A330 series airplanes. The NPRM would have required... rulemaking (NPRM) for a new AD for all Airbus Model A330 series airplanes. The NPRM, FAA Docket No. FAA-2013...

  11. 78 FR 46543 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0665; Directorate Identifier 2012-NM-082-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-300 series airplanes and Model A340-200 and -300 series airplanes. This proposed AD was prompted by reports of corrosion...

  12. 78 FR 31386 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-24

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...) for all Airbus Model A330-200 and -300 series airplanes; and Model A340-200, -300, -500, and -600 series airplanes. That AD currently requires a one-time detailed inspection of both main landing gear...

  13. 78 FR 78285 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-26

    ...-1064; Directorate Identifier 2012-NM-101-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A300 B4-605R and B4-622R airplanes; Model A300 F4-605R airplanes; and Model A300 C4-605R Variant F airplanes. AD 2005-23-08 required repetitive inspections to detect cracks of certain attachment holes...

  14. 75 FR 29962 - Special Conditions: Cirrus Design Corporation Model SF50 Airplane; Function and Reliability Testing

    Science.gov (United States)

    2010-05-28

    ... SF50 airplanes. 1. Function and Reliability Testing Flight tests: In place of 14 CFR part 21.35(b)(2... Reliability Testing AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed special..., 1951, and deleted the service test requirements in Section 3.19 for airplanes of 6,000 pounds maximum...

  15. 76 FR 41659 - Airworthiness Directives; The Boeing Company Model 747 Airplanes

    Science.gov (United States)

    2011-07-15

    ... sleeving; and repair or replacement of any damaged wires with new wires. For airplanes on which any burned.... For airplanes on which any burned wires are found, that NPRM also proposed to continue to require an...-28A2204 may be used. (k) If any burned wire is found, prior to further flight, perform an inspection to...

  16. 75 FR 77793 - Airworthiness Directives; The Boeing Company Model 747 Airplanes

    Science.gov (United States)

    2010-12-14

    ... airplanes on which any burned wires are found, the existing AD also requires an inspection to detect damage... wires. For airplanes on which any burned wires are found, that AD also requires an inspection to detect... any burned wire is found, prior to further flight, perform an inspection to detect damage of the...

  17. 78 FR 78294 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-26

    ...-1031; Directorate Identifier 2013-NM-155-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and A330-300 series airplanes; and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. This proposed AD was prompted by the failure of the generator control unit-constant speed motor...

  18. 78 FR 65173 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by a determination that... Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this...

  19. 78 FR 40069 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0539; Directorate Identifier 2012-NM-145-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600 and Model A300 B4-600R series airplanes. That AD currently requires repetitive inspections to... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  20. 78 FR 7261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-01

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A310-203 airplanes. This AD was prompted by a report of an analysis that demonstrated a...-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; telephone (425...

  1. 78 FR 49915 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-16

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of..., for certain Airbus Model A310 series airplanes. AD 2004-15-07 required repetitive inspections for..., International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356...

  2. Longitudinal Trim and Tumble Characteristics of a 0.057-Scale Model of the Chance Vought XF7U-1 Airplane, TED NO. NACA DE311

    Science.gov (United States)

    Bryant, Robert L.

    1948-01-01

    Based on results of longitudinal trim and tumble tests of a 0.057-scale model of the Chance Vought XF7U-1 airplane, the following conclusions regarding the trim and tumble characteristics of the airplane have been drawn: 1. The airplane will not trim at any unusual or uncontrolled angles of attack. 2. The airplane will not tumble with the center of gravity located forward of 24 percent of the mean aerodynamic chord. When the center of gravity is located at 24 percent of the mean aerodynamic chord and slats are extended and elevators are deflected full up, the airplane may tumble if given an external positive pitching moment. 3. The tumbling motion obtained will be readily terminated by deflecting the elevators full down so as to oppose the rotation. 4. The accelerations encountered during an established tumble may be dangerous to the pilot and, therefore, action should be taken to terminate a tumble immediately upon its inception. 5. Simultaneous opening of two wing-tip parachutes having diameters of 4 feet or larger and having drag coefficients of approximately 0.7 will effectively terminate the tumble. 6. Model results indicate that the pilot will not be struck by the airplane if it becomes necessary to leave the airplane during a tumble. The pilot may require aid from an ejection-seat arrangement.

  3. The NPOESS Preparatory Project Science Data Segment (SDS) Data Depository and Distribution Element (SD3E) System Architecture

    Science.gov (United States)

    Ho, Evelyn L.; Schweiss, Robert J.

    2008-01-01

    The National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) Science Data Segment (SDS) will make daily data requests for approximately six terabytes of NPP science products for each of its six environmental assessment elements from the operational data providers. As a result, issues associated with duplicate data requests, data transfers of large volumes of diverse products, and data transfer failures raised concerns with respect to the network traffic and bandwidth consumption. The NPP SDS Data Depository and Distribution Element (SD3E) was developed to provide a mechanism for efficient data exchange, alleviate duplicate network traffic, and reduce operational costs.

  4. The NPOESS Preparatory Project (NPP) Science Data Segment (SDS) Data Depository and Distribution Element (SD3E) System Architecture

    Science.gov (United States)

    Ho, Evelyn L.; Schweiss, Robert J.

    2008-01-01

    The National Polar-orbiting Operational Environmental Satellite System (NPOESS), the U.S. Government's future low-Earth orbiting satellite system, will monitor global weather and environmental conditions. Serving as a risk reduction for NPOESS, the NPOESS Preparatory Project (NPP) will provide remotely sensed atmospheric, land, ocean, ozone, and sounder data that will serve the meteorological and global climate change scientific communities. The National Aeronautics and Space Administration (NASA) NPP Science Data Segment's (SDS) primary role is to independently assess the quality of the NPP science and environmental data records for their ability to support climate research. The SDS is composed of nine elements; an input element that receives data from the operational agencies and acts as a buffer, a calibration analysis element, five elements devoted to measurement based quality assessment, an element used to test algorithmic improvements, and an element that provides overall science direction. Each element requires a set of sensor specific science data products for their evaluation. There are four NPP sensors that will be flown on the NPP observatory. They are the Visible Infrared Imagining Radiometer Suite (VIIRS), the Advanced Technology Microwave Sounder (ATMS), the Cross-Track Infrared Sounder (CrIS), and the Ozone Mapper/Profiler Suite (OMPS). It is estimated that these four sensors combined will make daily data requests for approximately six terabytes of NPP science products from the operational data providers. As a result, issues associated with duplicate data requests, data transfers of large volumes of diverse products, and data transfer failures raised concerns with respect to the network traffic and bandwidth consumption. Therefore, a central data broker system for receiving and buffering data requests and data products for the SDS was developed. The data element for this system is called the SDS Data Depository and Distribution Element (SD3E). It

  5. 76 FR 15818 - Airworthiness Directives; Reims Aviation S.A. Model F406 Airplanes

    Science.gov (United States)

    2011-03-22

    ...-329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to Attn: Albert Mercado, Aerospace Engineer, FAA, Small...

  6. 76 FR 18964 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-04-06

    ... after receipt. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  7. Ditching Tests of a 1/10-Scale Model of the North American XFJ-1 Airplane Ted No. NACA 314

    Science.gov (United States)

    Fisher, Lloyd J.; McBride, Ellis E.

    1948-01-01

    Tests were made of a 1/10-scale dynamically similar model of the North American XFJ-1 airplane to study its behavior when ditched. The model was landed in calm water at the Langley tank no. 2 monorail. Various landing attitudes, speeds, and conditions of damage were simulated. The behavior of the model was determined from visual observations, by recording the accelerations, and by taking motion pictures of the ditchings. Data are presented in tabular form, sequence photographs, and time-history acceleration curves. From the results of the tests it was concluded that the airplane should be ditched at the near-stall, tail-down landing attitude of 12 deg. The flaps should be fully extended to obtain the lowest possible landing speed. The wing-tip tanks should be jettisoned if any appreciable load of fuel remains; if empty, they should be retained for additional buoyancy. In a calm-water ditching the airplane will probably run about 600 feet Maximum longitudinal decelerations of about 2.5g and maximum vertical acceleration of about 2g will be encountered. The nose-intake duct will be clear of the water until practically all forward motion has stopped.

  8. Revalidation of the NASA Ames 11-by 11-Foot Transonic Wind Tunnel with a Commercial Airplane Model

    Science.gov (United States)

    Kmak, Frank J.; Hudgins, M.; Hergert, D.; George, Michael W. (Technical Monitor)

    2001-01-01

    The 11-By 11-Foot Transonic leg of the Unitary Plan Wind Tunnel (UPWT) was modernized to improve tunnel performance, capability, productivity, and reliability. Wind tunnel tests to demonstrate the readiness of the tunnel for a return to production operations included an Integrated Systems Test (IST), calibration tests, and airplane validation tests. One of the two validation tests was a 0.037-scale Boeing 777 model that was previously tested in the 11-By 11-Foot tunnel in 1991. The objective of the validation tests was to compare pre-modernization and post-modernization results from the same airplane model in order to substantiate the operational readiness of the facility. Evaluation of within-test, test-to-test, and tunnel-to-tunnel data repeatability were made to study the effects of the tunnel modifications. Tunnel productivity was also evaluated to determine the readiness of the facility for production operations. The operation of the facility, including model installation, tunnel operations, and the performance of tunnel systems, was observed and facility deficiency findings generated. The data repeatability studies and tunnel-to-tunnel comparisons demonstrated outstanding data repeatability and a high overall level of data quality. Despite some operational and facility problems, the validation test was successful in demonstrating the readiness of the facility to perform production airplane wind tunnel%, tests.

  9. a Coarse-To Model for Airplane Detection from Large Remote Sensing Images Using Saliency Modle and Deep Learning

    Science.gov (United States)

    Song, Z. N.; Sui, H. G.

    2018-04-01

    High resolution remote sensing images are bearing the important strategic information, especially finding some time-sensitive-targets quickly, like airplanes, ships, and cars. Most of time the problem firstly we face is how to rapidly judge whether a particular target is included in a large random remote sensing image, instead of detecting them on a given image. The problem of time-sensitive-targets target finding in a huge image is a great challenge: 1) Complex background leads to high loss and false alarms in tiny object detection in a large-scale images. 2) Unlike traditional image retrieval, what we need to do is not just compare the similarity of image blocks, but quickly find specific targets in a huge image. In this paper, taking the target of airplane as an example, presents an effective method for searching aircraft targets in large scale optical remote sensing images. Firstly, we used an improved visual attention model utilizes salience detection and line segment detector to quickly locate suspected regions in a large and complicated remote sensing image. Then for each region, without region proposal method, a single neural network predicts bounding boxes and class probabilities directly from full images in one evaluation is adopted to search small airplane objects. Unlike sliding window and region proposal-based techniques, we can do entire image (region) during training and test time so it implicitly encodes contextual information about classes as well as their appearance. Experimental results show the proposed method is quickly identify airplanes in large-scale images.

  10. A COARSE-TO-FINE MODEL FOR AIRPLANE DETECTION FROM LARGE REMOTE SENSING IMAGES USING SALIENCY MODLE AND DEEP LEARNING

    Directory of Open Access Journals (Sweden)

    Z. N. Song

    2018-04-01

    Full Text Available High resolution remote sensing images are bearing the important strategic information, especially finding some time-sensitive-targets quickly, like airplanes, ships, and cars. Most of time the problem firstly we face is how to rapidly judge whether a particular target is included in a large random remote sensing image, instead of detecting them on a given image. The problem of time-sensitive-targets target finding in a huge image is a great challenge: 1 Complex background leads to high loss and false alarms in tiny object detection in a large-scale images. 2 Unlike traditional image retrieval, what we need to do is not just compare the similarity of image blocks, but quickly find specific targets in a huge image. In this paper, taking the target of airplane as an example, presents an effective method for searching aircraft targets in large scale optical remote sensing images. Firstly, we used an improved visual attention model utilizes salience detection and line segment detector to quickly locate suspected regions in a large and complicated remote sensing image. Then for each region, without region proposal method, a single neural network predicts bounding boxes and class probabilities directly from full images in one evaluation is adopted to search small airplane objects. Unlike sliding window and region proposal-based techniques, we can do entire image (region during training and test time so it implicitly encodes contextual information about classes as well as their appearance. Experimental results show the proposed method is quickly identify airplanes in large-scale images.

  11. Modelling and Simulation of Fuel Cell Dynamics for Electrical Energy Usage of Hercules Airplanes

    Directory of Open Access Journals (Sweden)

    Hamid Radmanesh

    2014-01-01

    Full Text Available Dynamics of proton exchange membrane fuel cells (PEMFC with hydrogen storage system for generating part of Hercules airplanes electrical energy is presented. Feasibility of using fuel cell (FC for this airplane is evaluated by means of simulations. Temperature change and dual layer capacity effect are considered in all simulations. Using a three-level 3-phase inverter, FC’s output voltage is connected to the essential bus of the airplane. Moreover, it is possible to connect FC’s output voltage to airplane DC bus alternatively. PID controller is presented to control flow of hydrogen and oxygen to FC and improve transient and steady state responses of the output voltage to load disturbances. FC’s output voltage is regulated via an ultracapacitor. Simulations are carried out via MATLAB/SIMULINK and results show that the load tracking and output voltage regulation are acceptable. The proposed system utilizes an electrolyser to generate hydrogen and a tank for storage. Therefore, there is no need for batteries. Moreover, the generated oxygen could be used in other applications in airplane.

  12. 78 FR 11556 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2013-02-19

    ... is the first of a new family of jet airplanes designed for corporate flight, fractional, charter, and... conservative way when deriving limit loads from limit conditions. (2) The airplane must meet the strength...

  13. 76 FR 36870 - Special Conditions: Gulfstream Model GVI Airplane; Design Roll Maneuver Requirement for...

    Science.gov (United States)

    2011-06-23

    ... issue a finding of regulatory adequacy pursuant to section 611 of Public Law 92-574, the ``Noise Control... Requirement for Electronic Flight Controls AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final... airplane will have a novel or unusual design feature associated with an electronic flight control system...

  14. 75 FR 28465 - Airworthiness Directives; Dassault-Aviation Model FALCON 2000 and FALCON 2000EX Airplanes

    Science.gov (United States)

    2010-05-21

    ... INFORMATION CONTACT: Tom Rodriguez, Aerospace Engineer, International Branch, ANM-116, Transport Airplane... function of the shock absorber is lost and high loads may be transmitted to the aircraft structure during... maneuvers or landing. Dassault states that, based on engineering studies, it believes that the failure or...

  15. 76 FR 21815 - Airworthiness Directives; The Boeing Company Model 737 Airplanes

    Science.gov (United States)

    2011-04-19

    ... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC... and pictures be added to Section 3.B.1.n.(1) of Boeing Alert Service Bulletin 737-27A1277, Revision 1... information directly to the manager of the ACO, send it to the attention of the person identified in the...

  16. 76 FR 18664 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2011-04-05

    ... installation of the P141 panel. The interconnecting wiring between the P141 panel and the P36 and P37 panels is... or concurrent installation of a second fuel crossfeed valve. This action also revises that NPRM by proposing an alternative location for the installation of the new panel assemblies for airplanes that have...

  17. 76 FR 1983 - Airworthiness Directives; The Boeing Company Model MD-11 and MD-11F Airplanes

    Science.gov (United States)

    2011-01-12

    ... assemblies of the tail tank fuel system, a wiring change, and corrective actions if necessary. This AD also requires, for certain airplanes, a general visual inspection for correct installation of the self-adhering high-temperature electrical insulation tape; installation of a wire assembly support bracket and...

  18. 75 FR 50853 - Special Conditions: Cirrus Design Corporation Model SF50 Airplane; Function and Reliability Testing

    Science.gov (United States)

    2010-08-18

    ... airplanes. 1. Function and Reliability Testing. Flight tests: In place of 14 CFR 21.35(b)(2), the following...; Function and Reliability Testing AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final special... to CAR part 3 became effective January 15, 1951, and deleted the service test requirements in Section...

  19. 75 FR 7557 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2010-02-22

    ... shorts in many systems, including the spar fuel shut off valve, oxygen mask deployment, and burned wires... into contact with some wire bundles, causing damaged, broken, and burned wires, resulting in system... deployment, and burned wires, which could be an ignition source in a hidden area of the airplane. Relevant...

  20. 78 FR 31835 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Landing Pitchover Condition

    Science.gov (United States)

    2013-05-28

    ... automatic braking system. This feature is a pilot-selectable function that allows earlier braking at landing... with an automatic braking system, which is a pilot-selectable function that allows earlier maximum... automatic braking system. The special conditions define the airplane configuration, speeds, and other...

  1. 75 FR 82219 - Airworthiness Directives; Air Tractor, Inc. Models AT-802 and AT-802A Airplanes

    Science.gov (United States)

    2010-12-30

    ... Service Information We reviewed the following service information from Snow Engineering Co.: Service... through -0269, that are: (1) certificated in any category; (2) engaged in agricultural dispersal operations, including those airplanes that have been converted from fire fighting to agricultural dispersal...

  2. 76 FR 22828 - Airworthiness Directives; The Boeing Company Model 737-700 Series Airplanes

    Science.gov (United States)

    2011-04-25

    ... January 20, 2010. Those special attention service bulletins describe procedures for doing a general visual... General Visual Inspection of Seat Tracks (i) For airplanes identified in Boeing Special Attention Service... results from reports that the aft seat leg fittings span the station (STA) 521.45 stay-out zone. We are...

  3. 75 FR 3660 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-01-22

    ... airplanes. This proposed AD would require repetitive inspections for corrosion and cracking in the front... side link support fitting at WS 292. We are proposing this AD to detect and correct such corrosion and... fastener locations common to the side link support fitting at WS 292. This area is not covered by the...

  4. 76 FR 27227 - Airworthiness Directives; Airbus Model A310 Series Airplanes

    Science.gov (United States)

    2011-05-11

    ... program, EASA [European Aviation Safety Agency] published AD 2007-0053, which replaced DGAC France AD F... airplane configuration: Cold working of trellis boom drainage holes. Repetitive detailed or rotating probe... take about 137 work-hours per product to comply with the basic requirements of this AD. The average...

  5. 76 FR 48045 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes

    Science.gov (United States)

    2011-08-08

    ... material at the FAA, call (816) 329-4148; e-mail: albert.mercado@faa.gov . Examining the AD Docket You may... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri... procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small...

  6. 75 FR 68688 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2010-11-09

    ... the part number of a washer used in Figures 1 and 4 of Boeing Special Attention Service Bulletin 757... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle... Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE...

  7. 76 FR 8615 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Science.gov (United States)

    2011-02-15

    ... distinct checks as specified in Steps 1 and 2 of Figures 2 and 5 of Boeing Special Attention Service..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65..., Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE...

  8. 75 FR 8465 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes

    Science.gov (United States)

    2010-02-25

    ... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood.... Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New... rate is $85 per work-hour. Based on these figures, we estimate the cost of this AD to the U.S...

  9. 76 FR 10226 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Science.gov (United States)

    2011-02-24

    ... contents of the proposed rule. Request To Revise the Compliance Time FedEx, US Airways, Delta, European Air... US Airways requested that we change the compliance time from ``60 months after December 30, 2008... Compliance We estimate that this AD affects 667 airplanes of U.S. registry. We estimate the following costs...

  10. 75 FR 70863 - Airworthiness Directives; The Boeing Company Model 747 Airplanes

    Science.gov (United States)

    2010-11-19

    ... the electrical bond resistance between the motor operated valve (MOV) actuators and airplane structure... through an MOV actuator into a fuel tank, which could create a potential ignition source inside the fuel..., ANM-140S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98057...

  11. 78 FR 75451 - Special Conditions: Cessna Model 750 Series Airplanes; Aircraft Electronic System Security...

    Science.gov (United States)

    2013-12-12

    ... design feature associated with the architecture and connectivity capabilities of the airplanes' computer... the comment for an association, business, labor union, etc.). DOT's complete Privacy Act Statement can...; facsimile 425-227-1149. SUPPLEMENTARY INFORMATION: The proposed network architecture includes the following...

  12. 76 FR 65103 - Special Conditions: Gulfstream Aerospace Corporation, Model GIV-X Airplane; Aircraft Electronic...

    Science.gov (United States)

    2011-10-20

    .... This airplane will have novel or unusual design features associated with the architecture and... the comment (or signing the comment for an association, business, labor union, etc.). DOT's complete... novel or unusual design features: digital systems architecture composed of several connected networks...

  13. 77 FR 36123 - Special Conditions: Gulfstream Aerospace LP (GALP), Model Gulfstream G280 Airplane; Aircraft...

    Science.gov (United States)

    2012-06-18

    ... architecture and connectivity capabilities of the airplane's computer systems and networks, which may allow... an association, business, labor union, etc.). DOT's complete Privacy Act Statement can be found in... or unusual design features: Digital systems architecture composed of several connected networks. The...

  14. 76 FR 8316 - Special Conditions: Gulfstream Model GVI Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2011-02-14

    ... system reliability. These special conditions establish a level of safety that neither raises nor lowers... airplane flight conditions following an in-flight occurrence and that are included in the flight manual (e... conditions may be required by other sections of 14 CFR part 25 regardless of calculated system reliability...

  15. 75 FR 60611 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2010-10-01

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model A300 C4...; Model A300 B4-601, B4- 603, B4-620, B4-622, B4-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F...-- Dated-- A300 series airplanes......... A300-32A0447..... April 22, 2004. A300 B4-600, B4-600R, and F4...

  16. Spin-Tunnel Investigation of a 1/20-Scale Model of the Northrop F-5E Airplane

    Science.gov (United States)

    Scher, Stanley H.; White, William L.

    1977-01-01

    An investigation has been conducted in the Langley spin tunnel to determine the spin and recovery characteristics of a 1/20-scale model of the Northrop F-5E airplane. The investigation included erect and inverted spins, a range of center-of- gravity locations and moments of inertia, symmetric and asymmetric store loadings, and a determination of the parachute size required for emergency spin recovery. The effects of increased elevator trailing-edge-up deflections, of leading-edge and trailing-edge flap deflections, and of simulating the geometry of large external stores were also determined.

  17. 78 FR 70851 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-11-27

    ... (EICAS) message that displays ``ENG THRUST (L,R)'' (for Model 787-8 airplanes) or ``ENG (1, 2, 3, or 4... The Boeing Company Model 747-8 and 747-8F series airplanes and Model 787-8 airplanes powered by GEnx...: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground...

  18. Spin Tests of 1/20-Scale Models of the Chance Vought Revised XF6U-1 and F6U-1 Airplanes, TED No. NACA 2390

    Science.gov (United States)

    Klinar, Walter J.; Berman, Theodore

    1948-01-01

    An investigation has been conducted in the Langley 20-foot free-spinning tunnel on the 1/20-scale model of the Chance Vought XF6U-1 airplane altered to represent the XF6U-1 airplane as it will be spin-tested in flight, and also altered to represent the F6U-1 airplane as it will be produced for service use. Spin tests were made to determine the effects of control settings and movements at the normal loading. The results show that the spins obtained on the revised XF6U-1 airplane will be oscillatory in roll and yaw and that recoveries by rudder reversal will be rapid. Model test results indicate that the F6U-1 airplane will probably not spin. Inasmuch as the results of this investigation show that the new designs are as good as or better than the original XF6U-1 design in regard to spin recovery, it is felt that the conclusions and recommendations reached for the original design can be applied to the new designs for all loading conditions.

  19. Airplane crash

    International Nuclear Information System (INIS)

    Brunner, P.

    1975-01-01

    In May, 1974, a severe airplane crash occurred near Springfield, llinois; the crew of three and a courier were killed. The plane was carrying a large container of controlled water with a slight amount of 60 Co. A survey of the crash site by Air Force detectives and the radiological assistance team from Wright--Patterson Air Force Base indicated no radioactivity. Experiences of the incident were used to develop guidelines for future emergency preparedness

  20. 78 FR 60798 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    ...-0363; Directorate Identifier 2013-NM-031-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) for all Airbus Model A330-200, -300 and -200 Freighter series airplanes, and Model A340-200... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  1. 78 FR 9581 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-11

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F...-03-11 Airbus: Amendment 39-17346. Docket No. FAA-2012-1002; Directorate Identifier 2012-NM-052-AD. (a...

  2. 77 FR 51717 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of... applies to certain Airbus Model A300 B4-2C, B4-103, and B4- 203 airplanes; and Model A300 B4-601, B4-603... information identified in this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point...

  3. 77 FR 40485 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-07-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... (AD) for all Airbus Model A300 series airplanes; all Model A300 B4-600, B4-600R, and F4-600R series... new AD: 2012-13-06 Airbus: Amendment 39-17108. Docket No. FAA-2012-0040; Directorate Identifier 2011...

  4. 78 FR 21227 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200, A330-200 Freighter, A330-300, A340-200, and A340-300 series airplanes; and Model... that, due to similar design, the enhanced MLG bogie pivot pin (Airbus modification 54500) could also be...

  5. 78 FR 17071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-20

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200, -300, and -200 Freighter series airplanes; and all Airbus Model A340-200 and -300 series...

  6. 77 FR 19059 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... all Airbus Model A340-500 and Model -600 series airplanes. This AD requires performing repetitive high... Airbus has issued Mandatory Service Bulletin A340-57-5029, including Appendices 01 and 02, dated February...

  7. 78 FR 15874 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F... ground threat avoidance, an Airbus A310 aeroplane experienced an uncommanded slide back of the co-pilot...

  8. Supplementary Investigation in the Free-Spinning Tunnel of a 1/24-Scale Model of the Grumman F9F-6 Airplane Incorporating only Flaperons for Lateral Control, TED No. NACA DE 364

    Science.gov (United States)

    Klinar, Walter J.; Lee, Henry A.

    1954-01-01

    A supplementary investigation was conducted in the Langley 20-foot free-spinning tunnel on a 1/24-scale model of the Grumman F9F-6 airplane. The primary purpose of the investigation was to reevaluate the spin-recovery characteristics of the airplane in view of the fact that the ailerons had been eliminated from the flaperon-aileron lateral control system of the airplane. A spin-tunnel investigation on a model of the earlier version of the F9F-6 airplane had indicated that use of ailerons with the spin (stick right in a right spin) was essential to insure recovery. The results indicate that with.ailerons eliminated, it may be difficult to obtain an erect developed spin but if a fully developed spin is obtained on the airplane, recovery therefrom may be difficult or impossible. Flaperon deflection should have little effect on spins or recoveries.

  9. 75 FR 49370 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2010-08-13

    ... cycling and that a previous study on a Model A310 airplane had shown no reduction in stiffness due to age... considers the equipment for both inspections to be special tooling and the inspection methods to be of... of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures...

  10. 76 FR 70042 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2011-11-10

    ... Airworthiness Directives; Pacific Aerospace Limited Airplanes AGENCY: Federal Aviation Administration (FAA... directive (AD) for Pacific Aerospace Limited Model FU24 Airplanes. This AD results from mandatory continuing... Schletzbaum, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  11. Effect of human movement on airborne disease transmission in an airplane cabin: study using numerical modeling and quantitative risk analysis.

    Science.gov (United States)

    Han, Zhuyang; To, Gin Nam Sze; Fu, Sau Chung; Chao, Christopher Yu-Hang; Weng, Wenguo; Huang, Quanyi

    2014-08-06

    Airborne transmission of respiratory infectious disease in indoor environment (e.g. airplane cabin, conference room, hospital, isolated room and inpatient ward) may cause outbreaks of infectious diseases, which may lead to many infection cases and significantly influences on the public health. This issue has received more and more attentions from academics. This work investigates the influence of human movement on the airborne transmission of respiratory infectious diseases in an airplane cabin by using an accurate human model in numerical simulation and comparing the influences of different human movement behaviors on disease transmission. The Eulerian-Lagrangian approach is adopted to simulate the dispersion and deposition of the expiratory aerosols. The dose-response model is used to assess the infection risks of the occupants. The likelihood analysis is performed as a hypothesis test on the input parameters and different human movement pattern assumptions. An in-flight SARS outbreak case is used for investigation. A moving person with different moving speeds is simulated to represent the movement behaviors. A digital human model was used to represent the detailed profile of the occupants, which was obtained by scanning a real thermal manikin using the 3D laser scanning system. The analysis results indicate that human movement can strengthen the downward transport of the aerosols, significantly reduce the overall deposition and removal rate of the suspended aerosols and increase the average infection risk in the cabin. The likelihood estimation result shows that the risk assessment results better fit the outcome of the outbreak case when the movements of the seated passengers are considered. The intake fraction of the moving person is significantly higher than most of the seated passengers. The infection risk distribution in the airplane cabin highly depends on the movement behaviors of the passengers and the index patient. The walking activities of the crew

  12. 78 FR 66861 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-07

    ...-0834; Directorate Identifier 2012-NM-045-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... 2004-11-08, AD 2004-13-25, AD 2004-18-14, AD 2008-06-07, and AD 2012-04-07 that apply to certain Airbus... Airbus Model A340-200, -300, -500, and -600 series airplanes from the applicability. We are proposing...

  13. 78 FR 51058 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-20

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... certain Airbus Model A319 and A320 series airplanes. AD 2004-13-06 required repetitive detailed... and to allow extension of the interval between two consecutive inspections, Airbus validated an Eddy...

  14. 77 FR 57003 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-17

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, and A320 series airplanes. This AD was prompted by a report of a torn out.... The FAA amends Sec. 39.13 by adding the following new AD: 2012-18-12 Airbus: Amendment 39-17189...

  15. 78 FR 54377 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-09-04

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports that certain... accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-27- 1214, including Appendix...

  16. 78 FR 68352 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-14

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-223F, -223, -321, -322, and -323 airplanes. This AD was prompted by fatigue load... this AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac...

  17. 78 FR 64162 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-28

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by a determination that...., Washington, DC. For service information identified in this AD, contact Airbus, Airworthiness Office--EIAS, 1...

  18. 78 FR 79292 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) 2011-24-09 which applied to certain Airbus Model A340-200 and A340-300 series airplanes. AD... AD, contact Airbus SAS-- Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac...

  19. 77 FR 65808 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A320-214 and -232 airplanes. This AD was prompted by reports that medium-head fasteners were... installation of upper panels on Frame 35 in Airbus A320 final assembly line. Investigations revealed that...

  20. 78 FR 71996 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-02

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318-112, A319-111, A319-112, A319-115, A319-132, and A319-133 airplanes. This AD was... developing this AD. We have considered the comments received. Request To Refer to Revised EASA AD Airbus...

  1. 78 FR 64156 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-28

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for all Airbus Model A340-211 -212, -213, -311, -312, -313, -541, and -642 airplanes. This AD... information identified in this AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice...

  2. 77 FR 7523 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-13

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for all Airbus Model A340-600 series airplanes. This AD requires modifying the fire.... Relevant Service Information Airbus has issued Mandatory Service Bulletin A340-26-5020, including Appendix...

  3. 78 FR 14647 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-07

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... (AD) for certain Airbus Model A310-204, -222, -304, -322, and -324 airplanes. This AD was prompted by... the Airbus A310 Airworthiness Limitation Section (ALS) Part 1 and bolts must be replaced at or before...

  4. 78 FR 60667 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-10-02

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... all Airbus Model A318, A319, A320, and A321 series airplanes. AD 2012- 26-51 required revising the...''), to correct an unsafe condition for the specified products. The MCAI states: Recently, an Airbus A330...

  5. 77 FR 19067 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for certain Airbus Model A321-131, -211, -212, and -231 airplanes. This AD requires a.... Relevant Service Information Airbus has issued Mandatory Service Bulletin A320-57-1120, Revision 01...

  6. 77 FR 19065 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for all Airbus Model A340-600 series airplanes. This AD requires a detailed inspection for.... Relevant Service Information Airbus has issued All Operators Telex A340-25A5191, dated January 18, 2011...

  7. 78 FR 21230 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, and A320 series airplanes. This AD was prompted by fuel system reviews conducted..., Airbus developed a modification which includes installing Ground Fault Interrupters (GFI) into the centre...

  8. 78 FR 19085 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-29

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A318, A319, A320, and A321 series airplanes. This AD was prompted by reports of oil residue... (MCAI) states: During Airbus Final Assembly Line flight tests, AoA [angle of attack] data from two...

  9. 77 FR 75825 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 and -300 series airplanes. This AD was prompted by a report of a prematurely... [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new AD: 2012-25-12 Airbus: Amendment 39...

  10. 78 FR 37437 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... Airbus Model A318, A319, A320, and A321 series airplanes. That AD currently requires one-time and... affected by AOT A320-55-1039 and Airbus SB A320-55-1035, A320-55- 1036 and A320-55-1037 which were not...

  11. 78 FR 52405 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-23

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-300, A340-200, and A340-300 series airplanes. This AD was prompted by a determination... Airbus: Amendment 39-17549. Docket No. FAA-2013-0335; Directorate Identifier 2012-NM-187-AD. [[Page 52407...

  12. 77 FR 19071 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... directive (AD) for certain Airbus Model A330-200, A330-300, A340-500, and A340-600 series airplanes. This AD...: During structural part assembly in Airbus production line, some nuts Part Number (P/N) ASNA2531-4 were...

  13. 77 FR 65812 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-31

    ... airplanes; and Model A340-200 and -300 series airplanes. This AD was prompted by reports of ram air turbine... before delivery from production, an A330 aeroplane experienced a RAT [ram air turbine] pump failure, as a result of which, the green hydraulic system could not be fully pressurized. Investigations concluded that...

  14. 76 FR 67343 - Airworthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series Airplanes

    Science.gov (United States)

    2011-11-01

    ... also cracked on the right-hand side. The cracks were discovered when the airplane had accumulated 44... Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: U.S. Department of..., between stringers S-20 and S-21, on both the left and right sides of the airplane, and applicable related...

  15. 75 FR 1527 - Special Conditions: Bombardier, Inc., Model DHC-8-100, -200, -300, and -400 Series Airplanes...

    Science.gov (United States)

    2010-01-12

    ..., Standardization Branch, ANM-113, Transport Airplane Directorate, Aircraft Certification Service, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-22793 facsimile (425) 227-1230; or e-mail... December 28, 2009. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service...

  16. 75 FR 82337 - Airworthiness Directives; The Boeing Company Model 777-200, -300, and -300ER Series Airplanes

    Science.gov (United States)

    2010-12-30

    ... hardware; and making certain wiring changes. This proposed AD was prompted by results from fuel system... a new P302 panel on the right side of the airplane, and changing the wiring; and performing certain bonding resistance measurements and reworking the airplane installation to verify that [[Page 82339...

  17. 76 FR 63822 - Special Conditions: Gulfstream Aerospace LP (GALP) Model G280 Airplane, Limit Engine Torque Loads...

    Science.gov (United States)

    2011-10-14

    ... Airplane, Limit Engine Torque Loads for Sudden Engine Stoppage AGENCY: Federal Aviation Administration (FAA... unusual design feature associated with engine torque loads imposed by sudden engine stoppage. The... airplane incorporates a novel or unusual design feature involving engine size and related torque load that...

  18. 76 FR 17334 - Special Conditions: Boeing Model 747-2G4B Airplane; Certification of Cooktops

    Science.gov (United States)

    2011-03-29

    ... into the passenger cabin environment. These potential hazards to the airplane and its occupants must be... airplane and its occupants from these potential hazards. Accordingly, this system is considered to be a novel or unusual design feature. Discussion Currently, ovens are the prevailing means of heating food on...

  19. 76 FR 27242 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-05-11

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R... applies to all Airbus Model A300 B4-601, B4-603, B4- 620, B4-622, B4-605R, B4-622R, F4-605R, F4-622R, and...

  20. 76 FR 59008 - Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and...

    Science.gov (United States)

    2011-09-23

    ... Airworthiness Directives; Airbus Model A300 B4-600, B4-600R, and F4-600R Series Airplanes, and Model C4-605R... to Airbus Model A300 B4-601, B4-603, B4-620, B4-622, B4-605R, B4-622R, F4-605R, F4-622R, and C4-605R...

  1. Optimal back-to-front airplane boarding

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  2. Optimal back-to-front airplane boarding.

    Science.gov (United States)

    Bachmat, Eitan; Khachaturov, Vassilii; Kuperman, Ran

    2013-06-01

    The problem of finding an optimal back-to-front airplane boarding policy is explored, using a mathematical model that is related to the 1+1 polynuclear growth model with concave boundary conditions and to causal sets in gravity. We study all airplane configurations and boarding group sizes. Optimal boarding policies for various airplane configurations are presented. Detailed calculations are provided along with simulations that support the main conclusions of the theory. We show that the effectiveness of back-to-front policies undergoes a phase transition when passing from lightly congested airplanes to heavily congested airplanes. The phase transition also affects the nature of the optimal or near-optimal policies. Under what we consider to be realistic conditions, optimal back-to-front policies lead to a modest 8-12% improvement in boarding time over random (no policy) boarding, using two boarding groups. Having more than two groups is not effective.

  3. DESIGN ASPECTS IN AIRPLANE EVOLUTION

    Directory of Open Access Journals (Sweden)

    ENUŞ Marilena

    2013-11-01

    Full Text Available The paper proposes to present a few important aspects from aerodynamics and aerospace technology. It also, presents important points regarding the improvement of airplanes as a result of research in shape modelling, materials, aerodynamics and 3d design. Several examples based on constructive structures are offered. The embodiment design of a traditional airplane is presented in order to offer directions of conceptual development for improving its performance parameters and shapes. The virtual scale models are created by computer in Catia V5, in order to provide the validation of the features and the performance of aerodynamic configuration in the wind tunnel.

  4. Rotary balance data for a typical single-engine general aviation design for an angle-of-attack range of 8 deg to 90 deg. 1: Influence of airplane components for model D. [Langley spin tunnel tests

    Science.gov (United States)

    Ralston, J.

    1983-01-01

    The influence of airplane components, as well as wing location and tail length, on the rotational flow aerodynamics is discussed for a 1/6 scale general aviation airplane model. The airplane was tested in a built-up fashion (i.e., body, body-wing, body-wing-vertical, etc.) in the presence of two wing locations and two body lengths. Data were measured, using a rotary balance, over an angle-of-attack range of 8 deg to 90 deg, and for clockwise and counter-clockwise rotations covering an omega b/2V range of 0 to 0.9.

  5. Free-Spinning and Recovery Characteristics of a 1/19-Scale Model of the North American T-28C Airplane, TED No. NACA AD 3127

    Science.gov (United States)

    Bowman, James S., Jr.

    1956-01-01

    An investigation has been conducted in the Langley 20-foot free-spinning tunnel on a l/19-scale model of the North American T-28C airplane to determine the spin and recovery characteristics. The T-28C airplane is similar to the T-28B airplane except for slight modifications for the arresting hook. The lower rear section of the fuselage was cut out and, consequently, the lower part of the rudder was removed to make a smooth fairing with the fuselage. The T-28B airplane had good recovery characteristics; but these modifications, along with the addition of gun packages on the wings, led to poor and unsatisfactory spin-recovery characteristics during demonstration spins of the T-28C airplane. Model test results indicated that without the gun packages installed, satisfactory recoveries could be obtained if the elevators were held full back while the rudder was fully reversed and the ailerons were held neutral. However, with the addition of gun packages to the wings and the corresponding change in loading, recoveries were considered unsatisfactory. Recoveries attempted by using a larger chord or larger span rudder were improved very slightly, but were still considered marginal or unsatisfactory. Strakes placed on the nose of the model were effective in slowing the spin rotation slightly and, in most instances, decreased the turns for recovery slightly. Recovery characteristics were slightly marginal for the full fuel loading when strakes and the extended-chord rudder were installed; but with the wing fuel partly used, recovery characteristics were again considered unsatisfactory or, at least, definitely on the marginal side. The optimum control technique for recovery is movement of the rudder to full against the spin with the stick held full back (elevators full up) and the ailerons held neutral, followed by forward movement of the stick only after the spin rotation ceases. Inverted-spin test results indicate that the airplane will spin steep and fast and that recovery

  6. Vertical Descent and Landing Tests of a 0.13-Scale Model of the Convair XFY-1 Vertically Rising Airplane in Still Air, TED No. NACA DE 368

    Science.gov (United States)

    Smith, Charlee C., Jr.; Lovell, Powell M., Jr.

    1954-01-01

    An investigation is being conducted to determine the dynamic stability and control characteristics of a 0.13-scale flying model of Convair XFY-1 vertically rising airplane. This paper presents the results of flight and force tests to determine the stability and control characteristics of the model in vertical descent and landings in still air. The tests indicated that landings, including vertical descent from altitudes representing up to 400 feet for the full-scale airplane and at rates of descent up to 15 or 20 feet per second (full scale), can be performed satisfactorily. Sustained vertical descent in still air probably will be more difficult to perform because of large random trim changes that become greater as the descent velocity is increased. A slight steady head wind or cross wind might be sufficient to eliminate the random trim changes.

  7. 78 FR 62495 - Special Conditions: Learjet Model 35, 35A, 36, and 36A Airplanes; Rechargeable Lithium-Ion...

    Science.gov (United States)

    2013-10-22

    ... commenter provides. Using the search function of the docket Web site, anyone can find and read the... batteries in small airplanes resulted in increased incidents of battery fires and failures which led to...

  8. Free-Spinning Characteristics of a 1/24-Scale Model of the Grumman F11F-1 Airplane, TED No. NACA AD 395

    Science.gov (United States)

    Bowman, James S., Jr.

    1955-01-01

    An investigation is being conducted in the Langley 20-foot free-spinning tunnel on a 1/24-scale model of the Grumman F11F-1 airplane to determine spin and recovery characteristics and the minimum-size parachute required to satisfactorily terminate the spin in an emergency. Results obtained to date are presented herein. Test results indicate that it may be difficult to obtain an erect or inverted spin on the airplane, but, if a spin is obtained, the spin will be very oscillatory and recovery from the developed erect spin by rudder reversal may not be possible. The lateral controls will have no appreciable effect on recoveries from erect.spins. Recovery from the inverted spin by merely neutralizing the rudder will be satisfactory. After recoveries by rudder reversal and after recoveries from spins without control movement (no spins), the model oftentimes rolled very rapidly about the X-axis. Based on limited preliminary tests made in this investigation to make the model recover satisfactorily, it appears that canards near the nose of the airplane or differentially operated horizontal tails may be utilized to provide rapid recoveries. The parachute test results indicate that an 11-foot-diameter (laid-out-flat) parachute with a drag coefficient of 0.650 (based on the laid- out-flat diameter) and with a towline length equal to the wing span is the minimum-size parachute required to satisfactorily terminate an erect or inverted spin in an emergency.

  9. Wind-tunnel tests of a 1/4 scale model of the Bell XS-1 transonic airplane. 1: Longitudinal stability and control characteristics

    Science.gov (United States)

    Donlan, C. J.; Kemp, W. B., Jr.; Polhamus, E. C.

    1976-01-01

    A 1/4 scale model of the Bell XS-1 transonic aircraft was tested in the Langley 300 mile-per-hour 7 by 10 foot tunnel to determine its low speed longitudinal stability and control characteristics. Pertinent longitudinal flying qualities expected of the XS-1 research airplane were estimated from the results of these tests including the effects of compressibility likely to be encountered at speeds below the force break. It appears that the static longitudinal stability and elevator control power will be adequate, but that the elevator control force gradient in steady flight will be undesirably low for all configurations. It is suggested that a centering spring be incorporated in the elevator control system of the airplane in order to increase the control force gradient in steady flight and in maneuvers.

  10. 77 FR 26937 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...) for certain Airbus Model A300 B2-1C, B2K-3C, B2-203, B4-2C, B4-103, and B4-203 airplanes; and Model... Airbus Service Bulletins (SB) A300-57-0235 and A300-57-6088 * * *. Subsequently, new cases of cracks were...

  11. 77 FR 75833 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-26

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...) for certain Airbus Model A300 B4-2C, B4-103, and B4-203 airplanes; and Model A300 B4-601, B4-603, B4... accordance with Airbus SB A300-57-6053 (Mod. 10453). Therefore and pending completion of the full analysis...

  12. Wind Tunnel Testing of a 120th Scale Large Civil Tilt-Rotor Model in Airplane and Helicopter Modes

    Science.gov (United States)

    Theodore, Colin R.; Willink, Gina C.; Russell, Carl R.; Amy, Alexander R.; Pete, Ashley E.

    2014-01-01

    In April 2012 and October 2013, NASA and the U.S. Army jointly conducted a wind tunnel test program examining two notional large tilt rotor designs: NASA's Large Civil Tilt Rotor and the Army's High Efficiency Tilt Rotor. The approximately 6%-scale airframe models (unpowered) were tested without rotors in the U.S. Army 7- by 10-foot wind tunnel at NASA Ames Research Center. Measurements of all six forces and moments acting on the airframe were taken using the wind tunnel scale system. In addition to force and moment measurements, flow visualization using tufts, infrared thermography and oil flow were used to identify flow trajectories, boundary layer transition and areas of flow separation. The purpose of this test was to collect data for the validation of computational fluid dynamics tools, for the development of flight dynamics simulation models, and to validate performance predictions made during conceptual design. This paper focuses on the results for the Large Civil Tilt Rotor model in an airplane mode configuration up to 200 knots of wind tunnel speed. Results are presented with the full airframe model with various wing tip and nacelle configurations, and for a wing-only case also with various wing tip and nacelle configurations. Key results show that the addition of a wing extension outboard of the nacelles produces a significant increase in the lift-to-drag ratio, and interestingly decreases the drag compared to the case where the wing extension is not present. The drag decrease is likely due to complex aerodynamic interactions between the nacelle and wing extension that results in a significant drag benefit.

  13. Concluding Report on Free-Spinning and Recovery Characteristics of a 1/24-Scale Model of the Grumman F11F-1 Airplane, TED No. NACA AD 395

    Science.gov (United States)

    Bowman, James S., Jr.

    1956-01-01

    An investigation has been completed in the Langley 20-foot free-spinning tunnel on a l/24-scale model of the Grumman F11F-1 airplane to determine its spin and recovery characteristics. An interim report, Research Memorandum SL55G20, was published earlier and the present report concludes the presentation of results of the investigation. Primarily, the present report presents results obtained with engine gyroscopic moments simulated on the model. Also, the current results were obtained with a revised larger vertical tail recently incorporated on the airplane. It was difficult to obtain developed spins on the model when the spin direction was in the same sense as that of the engine rotation (right spin on the airplane). The developed spins obtained were very oscillatory and the recoveries were unsatisfactory. These results were similar to those previously reported for which engine rotation was not simulated. When the spin direction was in the opposite sense (left spin on the airplane), however, developed spins were readily obtainable. Recoveries from these spins also were unsatisfactory. Satisfactory recoveries were obtained on the model, however, when rudder reversal was accompanied by extension of small canards near the nose of the airplane or by deflection of the horizontal tail differentially with the spin.

  14. 78 FR 14007 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Electrical/Electronic Equipment Bay...

    Science.gov (United States)

    2013-03-04

    ... adequacy under section 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues special... flight controls consist of hydraulically powered fly-by-wire elevators, aileron and rudder, controlled by... where the flight crew could determine the origin of smoke or fire by a straightforward airplane flight...

  15. 76 FR 41045 - Special Conditions; Gulfstream Aerospace LP (GALP) Model G250 Airplane, Design Roll-Maneuver...

    Science.gov (United States)

    2011-07-13

    ... issue a finding of regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of... with electronic flight controls as they relate to design roll-maneuver requirements. The applicable... G250 airplane is equipped with an electronic flight control system that provides control through the...

  16. 76 FR 7513 - Airworthiness Directives; The Boeing Company Model 747-400 and -400F Series Airplanes

    Science.gov (United States)

    2011-02-10

    ... drip shields. This proposed AD was prompted by a report of a loss of bus control unit number 1 and... of a loss of bus control unit number 1 and generator control units numbers 1 and 2 while the airplane.... We are issuing this AD to prevent water penetration into the MEC, which could result in the loss of...

  17. 75 FR 906 - Airworthiness Directives; The Boeing Company Model 747-400, -400D, and -400F Series Airplanes

    Science.gov (United States)

    2010-01-07

    ... the potential for ignition sources inside fuel tanks caused by latent failures, alterations, repairs... maintenance program by incorporating new airworthiness limitations (AWLs) for fuel tank systems to satisfy... and on-airplane fuel tank system components. This AD results from a design review of the fuel tank...

  18. 75 FR 8551 - Airworthiness Directives; Airbus Model A300, A300-600, and A310 Airplanes

    Science.gov (United States)

    2010-02-25

    ... 2008- 0166. An updated list of suspect check valves with P/N 2S2794-1 has now been issued by Crissair... actions. (1) At the applicable compliance time specified in Table 1 of this AD: For Crissair check valves... Affected check valve installation, identified by FIN (functional item Compliance time number) (i) Airplanes...

  19. 76 FR 57627 - Special Conditions: Cessna Aircraft Company Model M680 Airplane; Rechargeable Lithium-Ion Battery...

    Science.gov (United States)

    2011-09-16

    ... currently approved for installation in transport-category airplanes. Large, high-capacity, rechargeable... electrolytes. The electrolyte can serve as a source of fuel for an external fire if the cell container is..., are established to ensure the availability of electrical power from the batteries when needed...

  20. 78 FR 68986 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-18

    .... SUPPLEMENTARY INFORMATION: Background On August 21, 2012, The Boeing Company applied for a change to Type... vulnerabilities from intentional or unintentional corruption of data and systems critical to the safety and maintenance of the airplane. The existing regulations and guidance material did not anticipate this type of...

  1. 78 FR 70848 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-27

    ... Aerospace Company applied for a change to Type Certificate No. T00001SE Rev. 30 dated June 6, 2012 for... unintentional corruption of data and systems critical to the safety and maintenance of the airplane. The existing regulations and guidance material did not anticipate this type of system architecture or...

  2. 78 FR 70849 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Science.gov (United States)

    2013-11-27

    ... Aerospace Company applied for a change to Type Certificate No. T00001SE Rev. 30 dated June 6, 2012 for... unintentional corruption of data and systems critical to the safety and maintenance of the airplane. The existing regulations and guidance material did not anticipate this type of system architecture or...

  3. 78 FR 76731 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Science.gov (United States)

    2013-12-19

    ... series airplanes have fly-by-wire controls, fully software-configurable avionics, and fiber-optic... Regulations (14 CFR) 25.1353, the FAA provided an airworthiness standard for lead acid batteries and nickel... maintenance characteristics that differ significantly from those of the nickel cadmium and lead acid...

  4. 78 FR 6198 - Special Conditions: Airbus, Model A318-112 Airplane (S/N 3238); Certification of Cooktops

    Science.gov (United States)

    2013-01-30

    ... large, transport-category airplane powered by two CFM56-5B9/P engines, with a basic maximum takeoff..., electrical resistance, and fire extinguishing including cooking oil fires for light duty and heavy duty.... [Note: The applicant may find additional useful information in the Society of Automotive Engineers...

  5. 76 FR 30523 - Special Conditions: Boeing Model 747-8/-8F Airplanes, Interaction of Systems and Structures

    Science.gov (United States)

    2011-05-26

    ... comments were received from one commenter. Concerns With the Philosophy of Controlling Aeroelastic... reservations with the philosophy of controlling an aeroelastic instability (flutter) with an active control... throughout the service life of the airplane by: (i) Analysis to the nominal aeroelastic stability envelope...

  6. 76 FR 24354 - Airworthiness Directives; The Boeing Company Model 777-200 and -300 Series Airplanes Equipped...

    Science.gov (United States)

    2011-05-02

    ... this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC.... Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New.... Required parts cost about $122,617 per product. Based on these figures, we estimate the cost of this AD to...

  7. 75 FR 79984 - Airworthiness Directives; Bombardier, Inc. Model BD-100-1A10 (Challenger 300) Airplanes

    Science.gov (United States)

    2010-12-21

    ..., except Federal holidays. For service information identified in this proposed AD, contact Bombardier, Inc... Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any... (Challenger 300) airplanes, having serial numbers (S/Ns) 20001 through 20274 inclusive, certificated in any...

  8. 75 FR 27406 - Airworthiness Directives; Bombardier, Inc. Model BD-100-1A10 (Challenger 300) Airplanes

    Science.gov (United States)

    2010-05-17

    ...., Monday through Friday, except Federal holidays. Examining the AD Docket You may examine the AD docket on....m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the... BD-100-1A10 (Challenger 300) airplanes, having serial numbers (S/Ns) 20001 through 20274 inclusive...

  9. 75 FR 70090 - Special Conditions: Bombardier Inc. Model CL-600-2E25 Airplane, Operation Without Normal...

    Science.gov (United States)

    2010-11-17

    ... Performance Credit for Use of Automatic Power Reserve (APR), No. 25-167-SC, dated October 24, 2000 (same as CL...(b)(4), Lack of On/Off Switch for Automatic Takeoff Thrust Control System (ATTCS). 7. Section 25.841... can continue through safe flight and landing (including steering and braking on ground for airplanes...

  10. 75 FR 52246 - Airworthiness Directives; Airbus Model A318, A319, A320, and A321 Series Airplanes

    Science.gov (United States)

    2010-08-25

    ... required by paragraphs (g)(1) and (g)(2) of this AD, as applicable. A review of airplane maintenance..., notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate... 2006. Table of Contents 1-TOC 9 November 2006. Section 1--Introduction 1--7 9 November 2006. Section 2...

  11. 77 FR 70941 - Special Conditions: Embraer S.A., Model EMB-550 Airplane; Interaction of Systems and Structures

    Science.gov (United States)

    2012-11-28

    ... 425-227-1232. SUPPLEMENTARY INFORMATION: Comments Invited We invite interested people to take part in... first of a new family of jet airplanes designed for corporate flight, fractional, charter, and private... differential pressure. (iii) Freedom from aeroelastic instability must be shown up to the speeds defined in Sec...

  12. 75 FR 5677 - Airworthiness Directives; The Boeing Company Model 767-200, -300, and -300F Series Airplanes

    Science.gov (United States)

    2010-02-04

    ... AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H... a magnetic particle inspection (MPI) in accordance with Part 4, ``Magnetic Particle Inspection of... November 5, 2009, or MPI in accordance with Part 4, ``Magnetic Particle Inspection of the Midspar Fuse Pin...

  13. 75 FR 60655 - Airworthiness Directives; Airbus Model A330-201, -202, -203, -223, and -243 Airplanes; Airbus...

    Science.gov (United States)

    2010-10-01

    ... time during which fuel tanks are exposed to flammable conditions is one of these criteria. The other... flammable fuel vapors, could result in fuel tank explosions and consequent loss of the airplane. [[Page... information and, in general, agree with their substance. But we might have found it necessary to use different...

  14. 75 FR 10696 - Airworthiness Directives; Fokker Services B.V. Model F.28 Mark 0070 and 0100 Airplanes

    Science.gov (United States)

    2010-03-09

    ... revealed that, due to their position on the aircraft, ice may form on actuators P/N 9409122 installed on... replacing the valve actuator with a serviceable part is in the Fokker 70/100 Aircraft Maintenance Manual... airplane, fuel fire shut-off valve actuators P/N [part number] 9409122 are susceptible to freezing, which...

  15. 77 FR 69572 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: High Speed...

    Science.gov (United States)

    2012-11-20

    ... electronic flight control system which contains fly-by-wire control laws, including envelope protections, for... airplane incorporates an overspeed protection system in the normal mode. This mode prevents the pilot from... contain appropriate standards for high speed protection systems. Discussion As further discussed...

  16. 78 FR 11562 - Special Conditions: Embraer S.A., Model EMB-550 Airplanes; Flight Envelope Protection: High Speed...

    Science.gov (United States)

    2013-02-19

    ... electronic flight control system which contains fly-by-wire control laws, including envelope protections, for... airplane incorporates an overspeed protection system in the normal mode. This mode prevents the pilot from... contain appropriate standards for high speed protection systems. Discussion As further discussed...

  17. 78 FR 76252 - Special Conditions: Airbus, Model A350-900 Series Airplane; Isolation or Protection of the...

    Science.gov (United States)

    2013-12-17

    ..., business, labor union, etc.). DOT's complete Privacy Act Statement can be found in the Federal Register... unusual design feature: an electronics network system architecture which is new and novel for commercial... series architecture is new and novel for commercial transport airplanes because it allows connection to...

  18. 77 FR 64025 - Special Conditions: Airbus Model A318, A319, A320, and A321 Series Airplanes; Interaction of...

    Science.gov (United States)

    2012-10-18

    ... airplane flight conditions following an in-flight occurrence and that are included in the flight manual (e... be required by other sections of 14 CFR part 25 regardless of calculated system reliability. Where... structural capability below the level required by part 25 or significantly reduce the reliability of the...

  19. Dynamic Longitudinal and Directional Stability Derivatives for a 45 deg. Sweptback-Wing Airplane Model at Transonic Speeds

    Science.gov (United States)

    Bielat, Ralph P.; Wiley, Harleth G.

    1959-01-01

    An investigation was made at transonic speeds to determine some of the dynamic stability derivatives of a 45 deg. sweptback-wing airplane model. The model was sting mounted and was rigidly forced to perform a single-degree-of-freedom angular oscillation in pitch or yaw of +/- 2 deg. The investigation was made for angles of attack alpha, from -4 deg. to 14 deg. throughout most of the transonic speed range for values of reduced-frequency parameter from 0.015 to 0.040 based on wing mean aerodynamic chord and from 0.04 to 0.14 based on wing span. The results show that reduced frequency had only a small effect on the damping-in-pitch derivative and the oscillatory longitudinal stability derivative for all Mach numbers M and angles of attack with the exception of the values of damping coefficient near M = 1.03 and alpha = 8 deg. to 14 deg. In this region, the damping coefficient changed rapidly with reduced frequency and negative values of damping coefficient were measured at low values of reduced frequency. This abrupt variation of pitch damping with reduced frequency was a characteristic of the complete model or wing-body-vertical-tail combination. The damping-in-pitch derivative varied considerably with alpha and M for the horizontal-tail-on and horizontal-tail-off configurations, and the damping was relatively high at angles of attack corresponding to the onset of pitch-up for both configurations. The damping-in-yaw derivative was generally independent of reduced frequency and M at alpha = -4 deg. to 4 deg. At alpha = 8 deg. to 14 deg., the damping derivative increased with an increase in reduced frequency and alpha for the configurations having the wing, whereas the damping derivative was either independent of or decreased with increase in reduced frequency for the configuration without the wing. The oscillatory directional stability derivative for all configurations generally decreased with an increase in the reduced-frequency parameter, and, in some instances

  20. 78 FR 65155 - Special Conditions: Learjet Model 45 Series Airplanes; Isolation or Security Protection of the...

    Science.gov (United States)

    2013-10-31

    ... an association, business, labor union, etc.). DOT's complete Privacy Act Statement can be found in... supplemental type certificate (STC) change in the digital systems architecture in the Learjet Model 45 series... plus two crew members. The proposed Learjet Model 45 architecture is new and novel for commercial...

  1. High Altitude Long Endurance UAV Analysis Model Development and Application Study Comparing Solar Powered Airplane and Airship Station-Keeping Capabilities

    Science.gov (United States)

    Ozoroski, Thomas A.; Nickol, Craig L.; Guynn, Mark D.

    2015-01-01

    There have been ongoing efforts in the Aeronautics Systems Analysis Branch at NASA Langley Research Center to develop a suite of integrated physics-based computational utilities suitable for modeling and analyzing extended-duration missions carried out using solar powered aircraft. From these efforts, SolFlyte has emerged as a state-of-the-art vehicle analysis and mission simulation tool capable of modeling both heavier-than-air (HTA) and lighter-than-air (LTA) vehicle concepts. This study compares solar powered airplane and airship station-keeping capability during a variety of high altitude missions, using SolFlyte as the primary analysis component. Three Unmanned Aerial Vehicle (UAV) concepts were designed for this study: an airplane (Operating Empty Weight (OEW) = 3285 kilograms, span = 127 meters, array area = 450 square meters), a small airship (OEW = 3790 kilograms, length = 115 meters, array area = 570 square meters), and a large airship (OEW = 6250 kilograms, length = 135 meters, array area = 1080 square meters). All the vehicles were sized for payload weight and power requirements of 454 kilograms and 5 kilowatts, respectively. Seven mission sites distributed throughout the United States were selected to provide a basis for assessing the vehicle energy budgets and site-persistent operational availability. Seasonal, 30-day duration missions were simulated at each of the sites during March, June, September, and December; one-year duration missions were simulated at three of the sites. Atmospheric conditions during the simulated missions were correlated to National Climatic Data Center (NCDC) historical data measurements at each mission site, at four flight levels. Unique features of the SolFlyte model are described, including methods for calculating recoverable and energy-optimal flight trajectories and the effects of shadows on solar energy collection. Results of this study indicate that: 1) the airplane concept attained longer periods of on

  2. Investigation of Incipient Spin Characteristics of a 1/35-Scale Model of the Convair F-102A Airplane, Coord. No. AF-AM-79

    Science.gov (United States)

    Healy, Frederick M.

    1958-01-01

    Incipient spin characteristics have been investigated on a l/35-scale dynamic model of the Convair F-10% airplane. The model was launched by a catapult apparatus into free flight with various control settings, and the motions obtained were photographed. The model was ballasted for the combat loading. All tests were made with the speed brakes and landing gear retracted, and engine effects were not simulated. The results of the investigation indicated that the model would enter motions apparently simulating entry phases of spins when the elevators were deflected full up. Deflecting the rudder had little effect on the direction of the motion obtained, but when ailerons were deflected the model always rotated in a direction opposite to the aileron setting (that is, the model entered a right spin with the stick to the left). The ailerons were very influential in initiating spin entry, and the pilot should avoid, as far as possible, the use of ailerons in low-speed flight.

  3. Flight Tests of a 0.13-Scale Model of the Convair XFY-1 Vertically Rising Airplane with the Lower Vertical Tail Removed, TED No.DE 368

    Science.gov (United States)

    Lovell, Powell M., Jr.

    1954-01-01

    An experimental investigation has been conducted to determine the dynamic stability and control characteristics in hovering and transition flight of a 0.13-scale flying model of the Convair XFY-1 vertically rising airplane with the lower vertical tail removed. The purpose of the tests was to obtain a general indication of the behavior of a vertically rising airplane of the same general type as the XFY-1 but without a lower vertical tail in order to simplify power-off belly landings in an emergency. The model was flown satisfactorily in hovering flight and in the transition from hovering to normal unstalled forward flight (angle of attack approximately 30deg). From an angle of attack of about 30 down to the lowest angle of attack covered in the flight tests (approximately 15deg) the model became progressively more difficult to control. These control difficulties were attributed partly to a lightly damped Dutch roll oscillation and partly to the fact that the control deflections required for hovering and transition flight were too great for smooth flight at high speeds. In the low-angle-of-attack range not covered in the flight tests, force tests have indicated very low static directional stability which would probably result in poor flight characteristics. It appears, therefore, that the attainment of satisfactory directional stability, at angles of attack less than 10deg, rather than in the hovering and transition ranges of flight is the critical factor in the design of the vertical tail for such a configuration.

  4. Investigation of Spinning and Tumbling Characteristics of a 1/20-Scale Model of the Consolidated Vultee XFY-1 Airplane in the Free-Spinning Tunnel, TED No. NACA DE 370

    Science.gov (United States)

    Lee, Henry A.

    1952-01-01

    An investigation has been conducted in the Langley 20-foot free-spinning tunnel on a l/20-scale model of the Consolidated Vultee XFY-1 airplane with a windmilling propeller simulated to determine the effects of control setting and movements upon the erect spin and recovery characteristics for a range of airplane-loading conditions. The effects on the model's spin-recovery characteristics of removing the lower vertical tail, removing the gun pods, and fixing the rudders at neutral were also investigated briefly. The investigation included determination of the size parachute required for emergency recovery from demonstration spins. The tumbling tendencies of the model were also investigated. Brief static force tests were made to determine the aerodynamic characteristics in pitch at high angles of attack. The investigation indicated that the spin and recovery characteristics of the airplane with propeller windmilling will be satisfactory for all loading conditions if recovery is attempted by full rudder reversal accompanied by simultaneous movement of the stick laterally to full with the spin (stick right in a right spin) and longitudinally to neutral. Inverted spins should be satisfactorily terminated by fully reversing the rudder followed immediately by moving the stick laterally towards the forward rudder pedal and longitudinally to neutral. Removal of the gun pods or fixing the rudders at neutral will not adversely affect the airplane's spin-recovery characteristics, but removal of the lower vertical tail will result in unsatisfactory spin-recovery characteristics. The model-test results showed that a 13.3-foot wing-tip conventional parachute (drag coefficient approximately 0.7) should be effective as an emergency spin-recovery device during demonstration spins of the airplane. It was indicated that the airplane should not tumble and that no unusual longitudinal-trim characteristics should be obtained for the center-of-gravity positions investigated.

  5. Force Characteristics in the Submerged and Planing Condition of a 1/5.78-Scale Model of a Hydro-Ski-Wheel Combination for the Grumman JRF-5 Airplane. TED No. NACA DE 357

    Science.gov (United States)

    Land, Norman S.; Pelz, Charles A.

    1952-01-01

    Force characteristics determined from tank tests of a 1/5.78 scale model of a hydro-ski-wheel combination for the Grumman JRF-5 airplane are presented. The model was tested in both the submerged and planing conditions over a range of trim, speed, and load sufficiently large to represent the most probable full-size conditions.

  6. 75 FR 20518 - Special Conditions: Cirrus Design Corporation Model SF50 Airplane; Full Authority Digital Engine...

    Science.gov (United States)

    2010-04-20

    ... issuance. Comments Invited Interested persons are invited to submit such written data, views, or arguments... On September 9, 2008, Cirrus Design Corporation applied for a type certificate for their new model... the digital engine control must provide an equivalent reliability to mechanical engine controls. Type...

  7. Airplane detection based on fusion framework by combining saliency model with Deep Convolutional Neural Networks

    Science.gov (United States)

    Dou, Hao; Sun, Xiao; Li, Bin; Deng, Qianqian; Yang, Xubo; Liu, Di; Tian, Jinwen

    2018-03-01

    Aircraft detection from very high resolution remote sensing images, has gained more increasing interest in recent years due to the successful civil and military applications. However, several problems still exist: 1) how to extract the high-level features of aircraft; 2) locating objects within such a large image is difficult and time consuming; 3) A common problem of multiple resolutions of satellite images still exists. In this paper, inspirited by biological visual mechanism, the fusion detection framework is proposed, which fusing the top-down visual mechanism (deep CNN model) and bottom-up visual mechanism (GBVS) to detect aircraft. Besides, we use multi-scale training method for deep CNN model to solve the problem of multiple resolutions. Experimental results demonstrate that our method can achieve a better detection result than the other methods.

  8. 77 FR 60887 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes

    Science.gov (United States)

    2012-10-05

    ... Airworthiness Directives; Alpha Aviation Concept Limited Airplanes AGENCY: Federal Aviation Administration (FAA... directive (AD) for Alpha Aviation Concept Limited Model R2160 Airplanes. This AD results from mandatory... and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as...

  9. 77 FR 44511 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes

    Science.gov (United States)

    2012-07-30

    ... Concept Limited Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... (AD) for Alpha Aviation Concept Limited Model R2160 Airplanes. This proposed AD results from mandatory... identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as...

  10. 77 FR 61548 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-10

    ...-indicating and crew-alerting system (EICAS) messages ALT DISAGREE and IAS DISAGREE displayed. The flightcrew... Special Attention Service Bulletin 727-34-0245, dated June 4, 2008 (for Model airplanes); [[Page 61549... -200C series airplanes); and Boeing Special Attention Service Bulletin 747-34-2925, dated June 4, 2008...

  11. 78 FR 33193 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-06-04

    ... modifications (such as the installation of felt on Model 767 airplanes per Figure 18 of Boeing Special Attention... information identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management... Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE...

  12. 77 FR 47277 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-08-08

    ... Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The... airplanes, serial numbers 413, 443, 450 through 452 inclusive, 456, 458, 462 through 465 inclusive, 467 through 470 inclusive, and 473 through 588 inclusive. (2) Model DHC-8-400, -401, and -402 airplanes...

  13. 78 FR 41277 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-07-10

    ... Airworthiness Directives; Piper Aircraft, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... certain Piper Aircraft, Inc. Models PA-46-310P, PA-46-350P, PA-46R-350T, and PA-46-500TP airplanes. This... through Friday, except Federal holidays. For service information identified in this AD, contact Piper...

  14. 78 FR 72554 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2013-12-03

    ... Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes AGENCY: Federal Aviation Administration... Gulfstream Aerospace Corporation Model GV and GV-SP airplanes. This AD was prompted by reports of two... Aerospace Corporation, Technical Publications Dept., P.O. Box 2206, Savannah, GA 31402-2206; telephone 800...

  15. 78 FR 9781 - Airworthiness Directives; Pacific Aerospace Limited Airplanes

    Science.gov (United States)

    2013-02-12

    ... Airworthiness Directives; Pacific Aerospace Limited Airplanes AGENCY: Federal Aviation Administration (FAA... directive (AD) for all Pacific Aerospace Limited Models FU24-954 and FU24A-954 airplanes. This AD results... Aerospace Limited, Hamilton Airport, Private Bag, 3027 Hamilton, New Zealand; telephone: +64 7 843 6144; fax...

  16. 77 FR 31483 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2012-05-29

    ... Service Change (ASC) 229 and G-1159 (aka G-II) ASC 426 installs a new three-piece box fitting on the left... result of an improper structural modification. This records search also revealed that six other Model G... similar nonconforming condition was found on a total of six airplanes. Of those, one airplane does not...

  17. 77 FR 64695 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-10-23

    ... Airworthiness Directives; Hawker Beechcraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA... Hawker Beechcraft Corporation Model C90GTi (King Air) airplanes. This AD was prompted by reports of... service information identified in this AD, contact Hawker Beechcraft Corporation, 10511 E. Central Ave...

  18. 78 FR 42724 - Airworthiness Directives; Beechcraft Corporation Airplanes

    Science.gov (United States)

    2013-07-17

    ... Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... certain Beechcraft Corporation Models 1900, 1900C, and 1900D airplanes. AD 2011-27-51 currently requires... Corporation at P.O. Box 85, Wichita, Kansas 67201-0085; telephone: (800) 429-5372 or (316) 676-3140; Internet...

  19. 77 FR 29214 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-05-17

    ... Airworthiness Directives; Hawker Beechcraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA... Hawker Beechcraft Corporation Models 58 and G58 airplanes. This AD was prompted by installation of... this AD, contact Hawker Beechcraft Corporation, B091-A04, 10511 E. Central Ave., Wichita, Kansas 67206...

  20. 78 FR 52870 - Airworthiness Directives; Beechcraft Corporation Airplanes

    Science.gov (United States)

    2013-08-27

    ... Airworthiness Directives; Beechcraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... (AD) for certain Beechcraft Corporation (type certificate previously held by Hawker Beechcraft Corporation) Models 1900, 1900C, and 1900D airplanes. This proposed AD was prompted by reports of cracking in...

  1. 77 FR 33083 - Airworthiness Directives; WACO Classic Aircraft Corporation Airplanes

    Science.gov (United States)

    2012-06-05

    ... Airworthiness Directives; WACO Classic Aircraft Corporation Airplanes AGENCY: Federal Aviation Administration... directive (AD) for certain WACO Classic Aircraft Corporation Models 2T-1A, 2T-1A-1, and 2T-1A-2 airplanes... information identified in this AD, contact WACO Classic Aircraft Corporation; 15955 South Airport Rd., Battle...

  2. 77 FR 3585 - Airworthiness Directives; Cirrus Design Corporation Airplanes

    Science.gov (United States)

    2012-01-25

    ... Airworthiness Directives; Cirrus Design Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Corporation (Cirrus) Model SR22T airplanes. This AD was prompted by reports of partial loss of engine power.... ADDRESSES: For service information identified in this AD, contact Cirrus Design Corporation, 4515 Taylor...

  3. 77 FR 64693 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-10-23

    ... Directives; Hawker Beechcraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Beechcraft Corporation Model G58 airplanes. This AD was prompted by notification from Hawker Beechcraft Corporation that certain affected aircraft were produced with the incorrect gauge wiring installed. This AD...

  4. 77 FR 12757 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes

    Science.gov (United States)

    2012-03-02

    ... Corporation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... Beechcraft Corporation Models 58 and G58 airplanes. This proposed AD was prompted by installation of... information identified in this proposed AD, contact Hawker Beechcraft Corporation, B091-A04, 10511 E. Central...

  5. 78 FR 47549 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-08-06

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... to certain The Boeing Company Model 737-200, -200C, -300, and -400 series airplanes. AD 2000-06-13 R1..., adds inspections and related investigative and corrective actions, revises certain inspection types...

  6. DETERMINATION OF HYDRODYNAMIC CHARACTERISTICS OF A RADIO-CONTROLLED AIRPLANE MODEL WITH AIR CUSHION LANDING GEAR

    Directory of Open Access Journals (Sweden)

    2016-01-01

    Full Text Available This article presents the results of the hydrodynamic parameters of radio-controlled models (RCM of the aircraft with the landing gear on an air cushion (REFERENCED obtained during tests in the water tank of TSAGI NIMC on land- ing modes with varying alignment and pressure in air cushion chassis on calm and disturbed water surfaces.ACLG’s RCM is based on the Froude criterion. The experimental data of the real aircraft Dingo, LMS, An-26, C-130 Hercules (size, weight, thrust parameters were processed. Tests were carried out, using the standard testbed, utiliz- ing the dynamically-corresponding models in the water tank. Drag best value rate while travelling along the smooth water was reached at the rear centering, with balloon pressure on the water of 700 Pa. In this case, the hump drag, at velocity of 2 mps, does not exceed 29 Newtons (hydrodynamic fineness on the ‘drag hump’ is, Кг=13,5, while at velocity of 10 mps, the drag is 30 Newtons, at Кг =13.The most unfavourable mode of motion is the one with configuration of lowered pressure in the balloons (400 Pa.In these cases, the Кг = 6,5. At motion with yaw angle of 10º, the drag rate meaning practically stands stable (Кг = 13,1, while at 20º it grows (Кг = 10,6.At motion along the waved surface, the critical wave length equals to two thirds of the ACU, while drag raises by the quarter, compared to other wave types. Such vehicles can be used in the hard-to-reach regions of the Russian Federation.

  7. Hovering and Transition Flight Tests of a 1/5-Scale Model of a Jet-Powered Vertical-Attitude VTOL Research Airplane

    Science.gov (United States)

    Smith, Charles C., Jr.

    1961-01-01

    An experimental investigation has been made to determine the dynamic stability and control characteristics of a 1/5-scale flying model of a jet-powered vertical-attitude VTOL research airplane in hovering and transition flight. The model was powered with either a hydrogen peroxide rocket motor or a compressed-air jet exhausting through an ejector tube to simulate the turbojet engine of the airplane. The gyroscopic effects of the engine were simulated by a flywheel driven by compressed-air jets. In hovering flight the model was controlled by jet-reaction controls which consisted of a swiveling nozzle on the main jet and a movable nozzle on each wing tip; and in forward flight the model was controlled by elevons and a rudder. If the gyroscopic effects of the jet engine were not represented, the model could be flown satisfactorily in hovering flight without any automatic stabilization devices. When the gyroscopic effects of the jet engine were represented, however, the model could not be controlled without the aid of artificial stabilizing devices because of the gyroscopic coupling of the yawing and pitching motions. The use of pitch and yaw dampers made these motions completely stable and the model could then be controlled very easily. In the transition flight tests, which were performed only with the automatic pitch and yaw dampers operating, it was found that the transition was very easy to perform either with or without the engine gyroscopic effects simulated, although the model had a tendency to fly in a rolled and sideslipped attitude at angles of attack between approximately 25 deg and 45 deg because of static directional instability in this range.

  8. The Bristol "Badminton" Airplane

    Science.gov (United States)

    1926-01-01

    The Bristol Badminton, Type 99 airplane has a radial aircooled engine (a Bristol Jupiter 9 cylinder 450 HP.) and three fuel tanks. It is a single seat biplane weighing 1,840 lbs. empty and 2,460 lbs. loaded.

  9. Free-Spinning-Tunnel Investigation of a 1/28-Scale Model of the North American FJ-4 Airplane with External Fuel Tanks, TED No. NACA AD 3112

    Science.gov (United States)

    Healy, Frederick M.

    1958-01-01

    A supplementary investigation to determine the effect of external fuel tanks on the spin and recovery characteristics of a l/28-scale model of the North American FJ-4 airplane has been conducted in the Langley 20-foot free-spinning tunnel. The model had been extensively tested previously (NACA Research Memorandum SL38A29) and therefore only brief tests were made to evaluate the effect of tank installation. Erect spin tests of the model indicate that flat-type spins-are more prevalent with 200-gallon external fuel tanks than with tanks not installed. The recovery technique determined for spins without tanks, rudder reversal to full against the spin accompanied by simultaneous movement of ailerons to full with the spin, is recommended for spins encountered with external tanks installed. If inverted spins are encountered with external tanks installed, the tanks should be jettisoned and recovery attempted by rudder reversal to full against the spin with ailerons maintained at neutral.

  10. The Airplane Cabin Microbiome.

    Science.gov (United States)

    Weiss, Howard; Hertzberg, Vicki Stover; Dupont, Chris; Espinoza, Josh L; Levy, Shawn; Nelson, Karen; Norris, Sharon

    2018-06-06

    Serving over three billion passengers annually, air travel serves as a conduit for infectious disease spread, including emerging infections and pandemics. Over two dozen cases of in-flight transmissions have been documented. To understand these risks, a characterization of the airplane cabin microbiome is necessary. Our study team collected 229 environmental samples on ten transcontinental US flights with subsequent 16S rRNA sequencing. We found that bacterial communities were largely derived from human skin and oral commensals, as well as environmental generalist bacteria. We identified clear signatures for air versus touch surface microbiome, but not for individual types of touch surfaces. We also found large flight-to-flight beta diversity variations with no distinguishing signatures of individual flights, rather a high between-flight diversity for all touch surfaces and particularly for air samples. There was no systematic pattern of microbial community change from pre- to post-flight. Our findings are similar to those of other recent studies of the microbiome of built environments. In summary, the airplane cabin microbiome has immense airplane to airplane variability. The vast majority of airplane-associated microbes are human commensals or non-pathogenic, and the results provide a baseline for non-crisis-level airplane microbiome conditions.

  11. Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

    Directory of Open Access Journals (Sweden)

    Sieradzki Adam

    2016-09-01

    Full Text Available The joined wing concept is an unconventional airplane configuration, known since the mid-twenties of the last century. It has several possible advantages, like reduction of the induced drag and weight due to the closed wing concept. The inverted joined wing variant is its rarely considered version, with the front wing being situated above the aft wing. The following paper presents a performance prediction of the recently optimized configuration of this airplane. Flight characteristics obtained numerically were compared with the performance of two classical configuration airplanes of similar category. Their computational fluid dynamics (CFD models were created basing on available documentation, photographs and some inverse engineering methods. The analysis included simulations performed for a scale of 3-meter wingspan inverted joined wing demonstrator and also for real-scale manned airplanes. Therefore, the results of CFD calculations allowed us to assess the competitiveness of the presented concept, as compared to the most technologically advanced airplanes designed and manufactured to date. At the end of the paper, the areas where the inverted joined wing is better than conventional airplane were predicted and new research possibilities were described.

  12. Prospect of ultralight airplanes development

    Directory of Open Access Journals (Sweden)

    Adam KONICZEK

    2015-09-01

    Full Text Available The article presents characteristic of ultralight airplanes, rules and current interest of them. The purpose is to determine prospect of ultralight airplanes development on the basis of Civil Aviation Authority statistics analysis and trend of aviation market.

  13. Flight Investigation of the Stability and Control Characteristics of a 0.13-Scale Model of the Convair XFY-1 Vertically Rising Airplane During Constant-Altitude Transitions, TED No. NACA DE 368

    Science.gov (United States)

    Lovell, Powell M., Jr.; Kibry, Robert H.; Smith, Charles C., Jr.

    1953-01-01

    An investigation is being conducted to determine the dynamic stability and control characteristics of a 0.13-scale flying model of the Convair XFY-1 vertically rising airplane. This paper presents the results of flight tests to determine the stability and control characteristics of the model during constant-altitude slow transitions from hovering to normal unstalled forward flight. The tests indicated that the airplane can be flown through the transition range fairly easily although some difficulty will probably encountered in controlling the yawing motions at angles of attack between about 60 and 40. An increase in the size of the vertical tail will not materially improve the controllability of the yawing motions in this range of angle of attack but the use of a yaw damper will make the yawing motions easy to control throughout the entire transitional flight range. The tests also indicated that the airplane can probably be flown sideways satisfactorily at speeds up to approximately 33 knots (full scale) with the normal control system and up to approximately 37 knots (full scale) with both elevons and rudders rigged to move differentially for roll control. At sideways speeds above these values, the airplane will have a strong tendency to diverge uncontrollably in roll.

  14. 78 FR 76734 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Seats...

    Science.gov (United States)

    2013-12-19

    ... Series Airplanes; Seats With Non-Traditional, Large, Non- Metallic Panels AGENCY: Federal Aviation... airplanes will have a novel or unusual design feature associated with seats that include non-traditional... base and significant common design elements. The fuselage is aluminum alloy material, blended double...

  15. 77 FR 64029 - Special Conditions: Airbus Model A318, A319, A320, and A321 Series Airplanes; Design Dive Speed

    Science.gov (United States)

    2012-10-18

    ... after operation of high-speed warning system by application of a load of 1.5g (0.5 acceleration... Series Airplanes; Design Dive Speed AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final... airplanes. These design features include a high-speed protection system. The applicable airworthiness...

  16. Take-Off and Landing Characteristics of a 0.13-Scale Model of the Convair XFY-1 Vertically Rising Airplane in Steady Winds, TED No. NACA DE 368

    Science.gov (United States)

    Schade, Robert O.; Smith, Charles C., Jr.; Lovell, P. M., Jr.

    1954-01-01

    An experimental investigation has been conducted to determine the stability and control characteristics of a 0.13-scale free-flight model of the Convair XFY-1 airplane during take-offs and landings in steady winds. The tests indicated that take-offs in headwinds up to at least 20 knots (full scale) will be fairly easy to perform although the airplane may be blown downstream as much as 3 spans before a trim condition can be established. The distance that the airplane will be blown down-stream can be reduced by restraining the upwind landing gear until the instant of take-off. The tests also indicated that spot landings in headwinds up to at least 30 knots (full scale) and in crosswinds up to at least 20 knots (full scale) can be accomplished with reasonable accuracy although, during the landing approach, there will probably be an undesirable nosing-up tendency caused by ground effect and by the change in angle of attack resulting from vertical descent. Some form of arresting gear will probably be required to prevent the airplane from rolling downwind or tipping over after contact. This rolling and tipping can be prevented by a snubbing line attached to the tip of the upwind' wing or tail or by an arresting gear consisting of a wire mesh on the ground and hooks on the landing gear to engage the mesh.

  17. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans C; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases......, due to altered cabin pressure, increase the amount of potential flatus. Holding back flatus on an airplane may cause significant discomfort and physical symptoms, whereas releasing flatus potentially presents social complications. To avoid this problem we humbly propose that active charcoal should...... airplanes, by using a methane breath test or to alter the fibre content of airline meals in order to reduce its flatulent potential. We conclude that the use of active charcoal on airlines may improve flight comfort for all passengers....

  18. 77 FR 58785 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-24

    ... condition for the specified products. The MCAI states: As a result of the Extended Service Goal 2 exercise... affect intrastate aviation in Alaska; and 4. Will not have a significant economic impact, positive or... this AD, as applicable. (1) For Model A300 B4-622R airplanes: Reinforce the door frame shells of...

  19. 76 FR 69168 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-08

    ...-1225; Directorate Identifier 2010-NM-269-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-2C, B4-103..., contact Airbus SAS-EAW (Airworthiness Office), 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  20. 78 FR 32347 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of... Airbus Model A330-200 Freighter, A330-200, A330-300, A340-200, A340- 300, A340-500, and A340-600 series... following service information: Airbus Mandatory Service Bulletin A330-56-3009, Revision 02, including...

  1. 77 FR 66760 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ...-1162; Directorate Identifier 2012-NM-002-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  2. 78 FR 39190 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-01

    ...-0543; Directorate Identifier 2012-NM-202-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  3. 77 FR 37829 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-06-25

    ...-0671; Directorate Identifier 2011-NM-096-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to supersede an existing airworthiness directive (AD) that applies to certain Airbus Model... this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  4. 77 FR 73340 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-10

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... earlier proposed airworthiness directive (AD) for all Airbus Model A318, A319, A320, and A321 series..., contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  5. 78 FR 23105 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-04-18

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model... Agency] has received a report via Airbus and Messier-Bugatti-Dowty Ltd, from a Maintenance repair...

  6. 78 FR 29261 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-20

    ...-0424; Directorate Identifier 2013-NM-014-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, A330... this proposed AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707...

  7. 77 FR 11793 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-02-28

    ...-0185; Directorate Identifier 2011-NM-001-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-103, B4-203... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  8. 77 FR 60325 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-03

    ...-1253; Directorate Identifier 2011-NM-079-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... directive (AD) that would supersede an existing AD for certain Airbus Model A318, A319, A320, and A321... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  9. 78 FR 18925 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-28

    ...-0212; Directorate Identifier 2012-NM-116-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-223F, -223, -321...., Monday through Friday, except Federal holidays. For Airbus service information identified in this...

  10. 77 FR 66762 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ...-1159; Directorate Identifier 2012-NM-028-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A310-203, -204, -222... information identified in this proposed AD, contact Airbus SAS--EAW (Airworthiness Office), 1 Rond Point...

  11. 76 FR 62673 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-10-11

    ...-1066; Directorate Identifier 2011-NM-050-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD), for certain Airbus Model A300 B2-1C, B2K-3C... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  12. 76 FR 72350 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-23

    ...-1253; Directorate Identifier 2011-NM-079-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  13. 76 FR 68671 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-11-07

    ...-1170; Directorate Identifier 2010-NM-264-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... Friday, except Federal holidays. For Airbus service information identified in this proposed AD, contact...

  14. 78 FR 46306 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-31

    ...-0632; Directorate Identifier 2013-NM-045-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 and -300 series... identified in this proposed AD, contact Airbus SAS, Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte...

  15. 78 FR 25902 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-03

    ...-0363; Directorate Identifier 2013-NM-031-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200, -300 and -200... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  16. 77 FR 15644 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-16

    ...-0192; Directorate Identifier 2011-NM-225-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200 and -200... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  17. 77 FR 51729 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-08-27

    ...-0810; Directorate Identifier 2011-NM-195-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, A330-300... identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte...

  18. 78 FR 79333 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-12-30

    ...-1066; Directorate Identifier 2013-NM-021-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to supersede airworthiness directive (AD) 2000-12- 12, for certain Airbus Model A300, A300... this proposed AD, contact Airbus SAS, Airworthiness Office--EAW, 1 Rond Point Maurice Bellonte, 31707...

  19. 78 FR 32345 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-30

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus Model A300... FedEx requested that copies of Airbus Service Bulletin A300-53- 6170, dated May 16, 2011, be provided...

  20. 78 FR 29666 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-05-21

    ...-0422; Directorate Identifier 2012-NM-097-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200 and -300... information identified in this proposed AD, contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point...

  1. 77 FR 26996 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ...-0427; Directorate Identifier 2011-NM-202-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A320-214 and-232... Friday, except Federal holidays. For service information identified in this proposed AD, contact Airbus...

  2. 78 FR 37498 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-06-21

    ...-0463; Directorate Identifier 2012-NM-165-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, -200... holidays. For service information identified in this proposed AD, contact Airbus SAS--Airworthiness Office...

  3. 77 FR 12989 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-05

    ... Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model.... Airbus carried out an investigation, demonstrating that the life limit of retraction brackets must be...

  4. 77 FR 59149 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-09-26

    ...-1002; Directorate Identifier 2012-NM-052-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-600, B4-600R...: Airbus: Docket No. FAA-2012-1002; Directorate Identifier 2012-NM- 052-AD. (a) Comments Due Date We must...

  5. 78 FR 9341 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-08

    ...-0088; Directorate Identifier 2011-NM-233-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to supersede an existing airworthiness directive (AD) that applies to all Airbus Model... this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte, 31707...

  6. 77 FR 64765 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-23

    ...-1105; Directorate Identifier 2012-NM-137-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318, A319, and A320... identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte...

  7. 77 FR 66772 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-11-07

    ...-1158; Directorate Identifier 2011-NM-232-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to supersede an existing airworthiness directive (AD) that applies to all Airbus Model... that AD, Airbus has revised certain ALI documents, which require more restrictive maintenance...

  8. 77 FR 65146 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-10-25

    ...-1106; Directorate Identifier 2012-NM-084-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 Freighter, -200..., contact Airbus SAS--Airworthiness Office--EAL, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France...

  9. 77 FR 16492 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-03-21

    ...-0291; Directorate Identifier 2011-NM-168-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318-112, and -121... identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte...

  10. 78 FR 53635 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-30

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 and... Sec. 39.13 by adding the following new airworthiness directive (AD): 2013-17-03 Airbus: Amendment 39...

  11. 77 FR 73343 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-12-10

    ...-1224; Directorate Identifier 2012-NM-112-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R, and... holidays. For Airbus service information identified in this proposed AD, contact Airbus SAS-EAW...

  12. 78 FR 14029 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-03-04

    ...-0096; Directorate Identifier 2012-NM-143-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318-112, A319-111... Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France; telephone...

  13. 77 FR 26998 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2012-05-08

    ...-0428; Directorate Identifier 2011-NM-078-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...: We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-243, -243F, -342..., between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For Airbus service information...

  14. 14 CFR 36.7 - Acoustical change: Transport category large airplanes and jet airplanes.

    Science.gov (United States)

    2010-01-01

    ... airplanes and jet airplanes. 36.7 Section 36.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... § 36.7 Acoustical change: Transport category large airplanes and jet airplanes. (a) Applicability. This section applies to all transport category large airplanes and jet airplanes for which an acoustical change...

  15. Simulation of Dynamics of a Flexible Miniature Airplane

    Science.gov (United States)

    Waszak, Martin R.

    2005-01-01

    A short report discusses selected aspects of the development of the University of Florida micro-aerial vehicle (UFMAV) basically, a miniature airplane that has a flexible wing and is representative of a new class of airplanes that would operate autonomously or under remote control and be used for surveillance and/or scientific observation. The flexibility of the wing is to be optimized such that passive deformation of the wing in the presence of aerodynamic disturbances would reduce the overall response of the airplane to disturbances, thereby rendering the airplane more stable as an observation platform. The aspect of the development emphasized in the report is that of computational simulation of dynamics of the UFMAV in flight, for the purpose of generating mathematical models for use in designing control systems for the airplane. The simulations are performed by use of data from a wind-tunnel test of the airplane in combination with commercial software, in which are codified a standard set of equations of motion of an airplane, and a set of mathematical routines to compute trim conditions and extract linear state space models.

  16. Flatulence on airplanes

    DEFF Research Database (Denmark)

    Pommergaard, Hans-Christian; Burcharth, Jakob; Fischer, Anders

    2013-01-01

    Flatus is natural and an invariable consequence of digestion, however at times it creates problems of social character due to sound and odour. This problem may be more significant on commercial airplanes where many people are seated in limited space and where changes in volume of intestinal gases...

  17. Preliminary Results Obtained from Flight Test of a 1/7-Scale Rocket-Powered Model of the Grumman XF10F Airplane Configuration in the Swept-Wing Condition, TED No. NACA DE 354

    Science.gov (United States)

    Gardner, William N.

    1951-01-01

    A flight investigation of a 1/7-scale rocket-powered model of the XF10F Grumman XFl0F airplane in the swept-wing configuration has been made. The purpose of this test was to determine the static longitudinal stability, damping in pitch, and longitudinal control effectiveness of the airplane with the center of gravity at 20 percent of the wing mean aerodynamic chord. Only a small amount of data was obtained from the test because, immediately after booster separation at a Mach number of 0.88, the configuration was directionally unstable and diverged in sideslip. Simultaneous with the sideslip divergence, the model became longitudinally unstable at 3 degree angle of attack and -6 degree sideslip and diverged in pitch to a high angle of attack. During the pitch-up the free-floating horizontal tail became unstable at 5 degree angle of attack and the tail drifted against its positive deflection limit.

  18. Flight Tests of a 0.13-Scale Model of the Convair XFY-1 Vertically Rising Airplane in a Setup Simulating that Proposed for Captive-Flight Tests in a Hangar, TED No. NACA DE 368

    Science.gov (United States)

    Lovell, Powell M., Jr.

    1953-01-01

    An experimental investigation has been conducted to determine the dynamic stability and control characteristics of a 0.13-scale free-flight model of the Convair XFY-1 airplane in test setups representing the setup proposed for use in the first flight tests of the full-scale airplane in the Moffett Field airship hangar. The investigation was conducted in two parts: first, tests with the model flying freely in an enclosure simulating the hangar, and second, tests with the model partially restrained by an overhead line attached to the propeller spinner and ground lines attached to the wing and tail tips. The results of the tests indicated that the airplane can be flown without difficulty in the Moffett Field airship hangar if it does not approach too close to the hangar walls. If it does approach too close to the walls, the recirculation of the propeller slipstream might cause sudden trim changes which would make smooth flight difficult for the pilot to accomplish. It appeared that the tethering system proposed by Convair could provide generally satisfactory restraint of large-amplitude motions caused by control failure or pilot error without interfering with normal flying or causing any serious instability or violent jerking motions as the tethering lines restrained the model.

  19. 78 FR 75287 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Flight...

    Science.gov (United States)

    2013-12-11

    ... exceeded. When EFCS failure states occur, flight envelope protection features can likewise either be... Series Airplanes; Flight Envelope Protection: General Limiting Requirements AGENCY: Federal Aviation... flight control system that provides flight envelope protections. The applicable airworthiness regulations...

  20. Airplane energy use and conservation strategies

    Energy Technology Data Exchange (ETDEWEB)

    Pilati, D.A.

    1974-05-01

    Domestic commercial airplane fuel use is examined as a function of stage length. A fuel use model is developed using the eight most popular airplanes. Short flights are very fuel inefficient; a 100-mile flight consumes 2.5 times as much fuel per passenger-mile than a 1,000-mile flight. Half of today's flights are for distances under 260 miles. Fuel consumption for purposes other than flying directly between airports is examined. Over 10% of total fuel use is for those portions of the flight in which no enroute distance is achieved. Delays account for at least 4.2% of the fuel consumption and auxiliary power units use over 1%. Fuel requirements for attempting to recover lost time and for fuel ferrying are also discussed. Airplane fuel efficiency can be increased in the short term by operational changes, particularly by increasing the load factor. A load factor increase from 50 to 60% would reduce airplane fuel use by 16% for the same traffic. Other options include reducing cruise speeds, increasing cruise altitudes, and changing ground operations. Each of these strategies offer savings of 1 to 3%. Total transportation energy use can be reduced by shifting air passengers to ground modes, especially for the inefficient short-stage traffic. Net energy savings for diverting half the flights under 200 miles to buses or trains is equivalent to 6% of the fleet fuel use. (6 tables, 6 fig., 36 references)

  1. Investigation of the Subsonic Stability and Control Characteristics of a 1/7-Scale Model of the North American X-15 Airplane with and without Fuselage Forebody Strakes

    Science.gov (United States)

    Hassell, James L., Jr.; Hewes, Donald E.

    1960-01-01

    An investigation of the low-subsonic stability and control characteristics of a l/7-scale free-flying model modified to represent closely the North American X-15 airplane (configuration 3) has been made in the Langley full-scale tunnel. Flight conditions at a relatively low altitude were simulated with the center of gravity at 16.0 percent of the mean aerodynamic chord. The longitudinal stability and control were considered to be satisfactory for all flight conditions tested. The lateral flight behavior was generally satisfactory for angles of attack below about 20 deg. At higher angles, however, the model developed a tendency to fly in a side-slipped attitude because of static directional instability at small sideslip angles. Good roll control was maintained to the highest angles tested, but rudder effectiveness diminished with increasing angle of attack and became adverse for angles above 40 deg. Removal of the lower rudder had little effect on the lateral flight characteristics for angles of attack less than about 20 deg but caused the lateral flight behavior to become worse in the high angle-of-attack range. The addition of small fuselage forebody strakes improved the static directional stability and lateral flight behavior of both configurations.

  2. Airplane dopes and doping

    Science.gov (United States)

    Smith, W H

    1919-01-01

    Cellulose acetate and cellulose nitrate are the important constituents of airplane dopes in use at the present time, but planes were treated with other materials in the experimental stages of flying. The above compounds belong to the class of colloids and are of value because they produce a shrinking action on the fabric when drying out of solution, rendering it drum tight. Other colloids possessing the same property have been proposed and tried. In the first stages of the development of dope, however, shrinkage was not considered. The fabric was treated merely to render it waterproof. The first airplanes constructed were covered with cotton fabric stretched as tightly as possible over the winds, fuselage, etc., and flying was possible only in fine weather. The necessity of an airplane which would fly under all weather conditions at once became apparent. Then followed experiments with rubberized fabrics, fabrics treated with glue rendered insoluble by formaldehyde or bichromate, fabrics treated with drying and nondrying oils, shellac, casein, etc. It was found that fabrics treated as above lost their tension in damp weather, and the oil from the motor penetrated the proofing material and weakened the fabric. For the most part the film of material lacked durability. Cellulose nitrate lacquers, however were found to be more satisfactory under varying weather conditions, added less weight to the planes, and were easily applied. On the other hand, they were highly inflammable, and oil from the motor penetrated the film of cellulose nitrate, causing the tension of the fabric to be relaxed.

  3. M1 distributions for {sup 163}Dy and {sup 157}Gd in the SU{sup BF}{sub sdg}(3) and SU{sup BF}{sub sd}(3) x 1g limits of pn-sdgIBFM

    Energy Technology Data Exchange (ETDEWEB)

    Devi, Y.D. [Saha Inst. of Nuclear Physics, Calcutta (India); Kota, V.K.B. [Physical Research Laboratory, Ahmedabad 380 009 (India)

    1996-04-01

    The SU{sup BF}{sub sdg}(3) limit of pn-sdgIBFM, which was developed earlier, is applied with success in analyzing the recently observed M1 data in the {sup 163}Dy nucleus. As new experiments are being planned for {sup 157}Gd nucleus and that {sup 156}Gd is known to be a good SU{sub sd}(3) x 1g nucleus, in the second part of the paper a formalism for M1 distributions in the SU{sup BF}{sub sd}(3) x 1g limit is developed. In both these analytically solvable limiting situations, predictions are made for M1 distributions in the {sup 157}Gd nucleus. (orig.).

  4. Occupational asthma caused by samba (Triplochiton scleroxylon) wood dust in a professional maker of wooden models of airplanes: a case study.

    Science.gov (United States)

    Krawczyk-Szulc, Patrycja; Wiszniewska, Marta; Pałczyński, Cezary; Nowakowska-Świrta, Ewa; Kozak, Anna; Walusiak-Skorupa, Jolanta

    2014-06-01

    Wood dust is a known occupational allergen that may induce, in exposed workers, respiratory diseases including asthma and allergic rhinitis. Samba (obeche, Triplochiton scleroxylon) is a tropical tree, which grows in West Africa, therefore, Polish workers are rarely exposed to it. This paper describes a case of occupational asthma caused by samba wood dust. The patient with suspicion of occupational asthma due to wood dust was examined at the Department of Occupational Diseases and Clinical Toxicology in the Nofer Institute of Occupational Medicine. Clinical evaluation included: analysis of occupational history, skin prick tests (SPT) to common and occupational allergens, determination of serum specific IgE to occupational allergens, serial spirometry measurements, metacholine challenge test and specific inhalation challenge test with samba dust SPT and specific serum IgE assessment revealed sensitization to common and occupational allergens including samba. Spirometry measurements showed mild obstruction. Metacholine challenge test revealed a high level of bronchial hyperactivity. Specific inhalation challenge test was positive and cellular changes in nasal lavage and induced sputum confirmed allergic reaction to samba. IgE mediated allergy to samba wood dust was confirmed. This case report presents the first documented occupational asthma and rhinitis due to samba wood dust in wooden airplanes model maker in Poland.

  5. Occupational asthma caused by samba (Triplochiton scleroxylon wood dust in a professional maker of wooden models of airplanes: A case study

    Directory of Open Access Journals (Sweden)

    Patrycja Krawczyk-Szulc

    2014-08-01

    Full Text Available Objectives: Wood dust is a known occupational allergen that may induce, in exposed workers, respiratory diseases including asthma and allergic rhinitis. Samba (obeche, Triplochiton scleroxylon is a tropical tree, which grows in West Africa, therefore, Polish workers are rarely exposed to it. This paper describes a case of occupational asthma caused by samba wood dust. Material and Methods: The patient with suspicion of occupational asthma due to wood dust was examined at the Department of Occupational Diseases and Clinical Toxicology in the Nofer Institute of Occupational Medicine. Clinical evaluation included: analysis of occupational history, skin prick tests (SPT to common and occupational allergens, determination of serum specific IgE to occupational allergens, serial spirometry measurements, metacholine challenge test and specific inhalation challenge test with samba dust. Results: SPT and specific serum IgE assessment revealed sensitization to common and occupational allergens including samba. Spirometry measurements showed mild obstruction. Metacholine challenge test revealed a high level of bronchial hyperactivity. Specific inhalation challenge test was positive and cellular changes in nasal lavage and induced sputum confirmed allergic reaction to samba. Conclusions: IgE mediated allergy to samba wood dust was confirmed. This case report presents the first documented occupational asthma and rhinitis due to samba wood dust in wooden airplanes model maker in Poland.

  6. NATO Allied Medical Publication 7.5 Study Draft 3 (AMedP 7.5 SD.3), NATO Planning Guide for the Estimation of CBRN Casualties

    Science.gov (United States)

    2015-12-01

    NORTH ATLANTIC TREATY ORGANIZATION (NATO) NATO STANDARDIZATION OFFICE (NSO) NATO LETTER OF PROMULGATION [ Date ] 1. The enclosed Allied Medical...The radioisotopes modeled are 60Co, 90Sr, 99Mo, 125I, 131I, 137Cs, 192Ir, 226Ra, 238Pu, 241Am, 252Cf. 2) Whole-body irradiation (from cloudshine...Carrier 1.22 2.70 Earth Shelter 16.67 66.67 Exposed/Dismounted 1.00 1.00 Foxhole (nuclear only)† 3.00 10.00 Masonry Building 8.33 6.67 Multi-Story

  7. Factors of airplane engine performance

    Science.gov (United States)

    Gage, Victor R

    1921-01-01

    This report is based upon an analysis of a large number of airplane-engine tests. It contains the results of a search for fundamental relations between many variables of engine operation. The data used came from over 100 groups of tests made upon several engines, primarily for military information. The types of engines were the Liberty 12 and three models of the Hispano-Suiza. The tests were made in the altitude chamber, where conditions simulated altitudes up to about 30,000 feet, with engine speeds ranging from 1,200 to 2,200 r.p.m. The compression ratios of the different engines ranged from under 5 to over 8 to 1. The data taken on the tests were exceptionally complete, including variations of pressure and temperature, besides the brake and friction torques, rates of fuel and air consumption, the jacket and exhaust heat losses.

  8. 78 FR 68347 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-11-14

    ... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), Department of...-200, A340- 300, A340-500, and A340-600 series airplanes. AD 2009-04-07 required revising the airplane... reference unit (ADIRU) from providing erroneous data to other airplane systems. AD 2011-02-09 required...

  9. 14 CFR 23.3 - Airplane categories.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane categories. 23.3 Section 23.3... STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES General § 23.3 Airplane categories. (a) The normal category is limited to airplanes that have a seating configuration, excluding pilot...

  10. 14 CFR 125.93 - Airplane limitations.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations. 125.93 Section 125.93...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements § 125.93 Airplane...

  11. Measured Engine Installation Effects of Four Civil Transport Airplanes

    Science.gov (United States)

    Senzig, David A.; Fleming, Gregg G.; Shepherd, Kevin P.

    2001-01-01

    The Federal Aviation Administration's Integrated Noise Model (INM) is one of the primary tools for land use planning around airports. The INM currently calculates airplane noise lateral attenuation using the methods contained in the Society of Automotive Engineer's Aerospace Information Report No. 1751 (SAE AIR 1751). Researchers have noted that improved lateral attenuation algorithms may improve airplane noise prediction. The authors of SAE AIR 1751 based existing methods on empirical data collected from flight tests using 1960s-technology airplanes with tail-mounted engines. To determine whether the SAE AIR 1751 methods are applicable for predicting the engine installation component of lateral attenuation for airplanes with wing-mounted engines, the National Aeronautics and Space Administration (NASA) sponsored a series of flight tests during September 2000 at their Wallops Flight Facility. Four airplanes, a Boeing 767-400, a Douglas DC-9, a Dassault Falcon 2000, and a Beech KingAir, were flown through a 20 microphone array. The airplanes were flown through the array at various power settings, flap settings, and altitudes to simulate take-off and arrival configurations. This paper presents the preliminary findings of this study.

  12. Airplane impact on nuclear power plants

    International Nuclear Information System (INIS)

    Eibl, J.

    2003-01-01

    A short report on investigations of nuclear power plants under airplane attack is given. It concerns the modeling of planes with regard to mass and stiffness, the relevant plane velocity and finally the determination of load-time functions. The necessary analysis of the concrete containment structure is shortly addressed. Finally a proposal for a structure to keep planes from such building structures is discussed. (author)

  13. Radiated Emissions from a Remote-Controlled Airplane-Measured in a Reverberation Chamber

    Science.gov (United States)

    Ely, Jay J.; Koppen, Sandra V.; Nguyen, Truong X.; Dudley, Kenneth L.; Szatkowski, George N.; Quach, Cuong C.; Vazquez, Sixto L.; Mielnik, John J.; Hogge, Edward F.; Hill, Boyd L.; hide

    2011-01-01

    A full-vehicle, subscale all-electric model airplane was tested for radiated emissions, using a reverberation chamber. The mission of the NASA model airplane is to test in-flight airframe damage diagnosis and battery prognosis algorithms, and provide experimental data for other aviation safety research. Subscale model airplanes are economical experimental tools, but assembling their systems from hobbyist and low-cost components may lead to unforseen electromagnetic compatibility problems. This report provides a guide for accommodating the on-board radio systems, so that all model airplane systems may be operated during radiated emission testing. Radiated emission data are provided for on-board systems being operated separately and together, so that potential interferors can be isolated and mitigated. The report concludes with recommendations for EMI/EMC best practices for subscale model airplanes and airships used for research.

  14. Wind-Tunnel Investigation at Low Speed of the Rolling Stability Derivatives of a 1/10-Scale Model of the Grumman F9F-9 Airplane, TED No. NACA AD 3109

    Science.gov (United States)

    Wolhart, Walter D.; Thomas, David F., Jr.

    1955-01-01

    An experimental investigation has been made in the Langley stability tunnel to determine the low-speed yawing, pitching, and static stability characteristics of a 1/10-scale model of the Grumman F9F-9 airplane. Tests were made to determine the effects of duct-entrance-fairing plugs on the static lateral and longitudinal stability characteristics of the complete model in the clean condition. The remaining tests were concerned with determining tail contributions as well as the effect of duct-entrance-fairing plugs, slats, flaps, and landing gear on the yawing and pitching stability derivatives. These data are presented without analysis in order to expedite distribution.

  15. Wind-Tunnel Investigation at Low Speed of the Yawing, Pitching, and Static Stability Characteristics of a 1/10-Scale Model of the Grumman F9F-9 Airplane, TED No. NACA AD 3109

    Science.gov (United States)

    Wolhart, Walter D.; Thomas, David F., Jr.

    1955-01-01

    An experimental investigation has been made in the Langley stability tunnel to determine the low-speed yawing, pitching, and static stability characteristics of a 1/10-scale model of the Grumman F9F-9 airplane. Tests were made to determine the effects of duct-entrance-fairing plugs on the static lateral and longitudinal stability characteristics of the complete model in the clean condition. The remaining tests were concerned with determining tail contributions as well as the effect of duct-entrance-fairing plugs, slats, flaps, and landing gear on the yawing and pitching stability derivatives. These data are presented without analysis in order to expedite distribution.

  16. Effect of simulated in-flight thrust reversing on vertical-tail loads of F-18 and F-15 airplane models. [conducted in the Langley 16-foot transonic tunnel

    Science.gov (United States)

    Bare, E. A.; Berrier, B. L.; Capone, F. J.

    1981-01-01

    Investigations were conducted in the Langley 16-Foot Transonic Tunnel to provide data on a 0.10-scale model of the prototype F-18 airplane and a 0.047-scale model of the F-15 three-surface configuration (canard, wing, and horizontal tails). Test data were obtained at static conditions and at Mach numbers from 0.6 to 1.2 over an angle-of-attack range from 2 deg to 15 deg. Nozzle pressure ratio was varied from jet off to about 8.0.

  17. 76 FR 63571 - Airworthiness Directives; Eclipse Aerospace, Inc. Airplanes Equipped With Pratt & Whitney Canada...

    Science.gov (United States)

    2011-10-13

    ... engines manufactured for new production Eclipse Aerospace, Inc. Model EA500 airplanes will incorporate the... requires incorporating an operating limitation of a maximum operating altitude of 30,000 feet into Section 2, Limitations, of the airplane flight manual (AFM). Since we issued that AD, P&WC has developed a...

  18. Airplane crash simulations

    International Nuclear Information System (INIS)

    Jovall, Ola

    2007-01-01

    Impact loads are considered in nuclear facility design as the result of the loading effects of certain design basis accidents and design basis threats made up of natural as well as man-made hazards. Also, beyond design basis accidents and threats are considered. Typical missiles include objects caused by tornado winds, aircrafts, war or terrorist activities, dropped objects, turbine fragments and other missiles resulting from failure of rotating equipment and whipping pipes and other objects of failure of pressurized fluid systems. The aim of the work is to study the potential of tools for numerical simulations to study the local load effects of airplane missiles impacting concrete structures. Two of the leading commercial computer codes for analysis of highly dynamic events, ABAQUS/Explicit and AUTODYN, have been evaluated. Numerical simulations have been carried out for rigid as well as deformable missiles with the characteristics of airplane engines. The analysis results have been compared with test results from a test program performed in the USA at Sandia National Laboratory and in Japan at Kobori Research Complex and Central Research Institute of the Electric Power industry. Finally, numerical simulations of a large passenger airliner impacting a reactor containment has been carried out using the analysis methodology developed. (author)

  19. 78 FR 67291 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Design...

    Science.gov (United States)

    2013-11-12

    .... 611 of Public Law 92-574, the ``Noise Control Act of 1972.'' The FAA issues special conditions, as... have a novel or unusual design feature associated with an electronic flight control system that provides roll control of the airplanes through pilot inputs to the flight computers. The applicable...

  20. 78 FR 76736 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 Series Airplanes; Side...

    Science.gov (United States)

    2013-12-19

    ... issue a finding of regulatory adequacy under Sec. 611 of Public Law 92-574, the ``Noise Control Act of...- high bypass, geared turbofan engines. Flight controls are fly-by-wire flight with two passive/uncoupled... and column controls. These airplanes also have a fly-by-wire electronic flight control system. This...

  1. 78 FR 65231 - Special Conditions: Bombardier Inc., Models BD-500-1A10 and BD-500-1A11 series airplanes...

    Science.gov (United States)

    2013-10-31

    ... five landscape primary cockpit displays. The dimension of the airplanes encompasses a wingspan of 115... by five incidents in the 1990's, which revealed unexpected flame spread along the insulation film... test criteria for insulation films directly relating to in-flight fire resistance. The current test...

  2. 76 FR 66198 - Airworthiness Directives; Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 Airplanes

    Science.gov (United States)

    2011-10-26

    ...., Monday through Friday, except Federal holidays. For service information identified in this proposed AD...., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory... airplanes, certificated in any category, serial numbers (S/N) 9002 through 9126 inclusive, 9128 through 9312...

  3. Wind-Tunnel Investigation at Low Speed of the Pitching Stability Derivatives of a 1/9-Scale Powered Model of the Convair XFY-1 Vertically Rising Airplane, TED No. NACA DE 373

    Science.gov (United States)

    Queijo, M. J.; Wolhart, Walter D.; Fletcher, H. S.

    1953-01-01

    An experimental investigation has been conducted in the Langley stability tunnel at low speed to determine the pitching stability derivatives of a 1/9-scale powered model of the Convair XFY-1 vertically rising airplane. Effects of thrust coefficient, control deflections, and propeller blade angle were investigated. The tests were made through an angle-of-attack range from about -4deg to 29deg, and the thrust coefficient range was from 0 to 0.7. In order to expedite distribution of these data, no analysis of the data has been prepared for this paper.

  4. Mars Gashopper Airplane, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — The Mars Gas Hopper Airplane, or "gashopper" is a novel concept for propulsion of a robust Mars flight and surface exploration vehicle that utilizes indigenous CO2...

  5. Gamma rays at airplane altitudes

    International Nuclear Information System (INIS)

    Iwai, J.; Koss, T.; Lord, J.; Strausz, S.; Wilkes, J.; Woosley, J.

    1990-01-01

    An examination of the gamma ray flux above 1 TeV in the atmosphere is needed to better understand the anomalous showers from point sources. Suggestions are made for future experiments on board airplanes

  6. Differential equations in airplane mechanics

    Science.gov (United States)

    Carleman, M T

    1922-01-01

    In the following report, we will first draw some conclusions of purely theoretical interest, from the general equations of motion. At the end, we will consider the motion of an airplane, with the engine dead and with the assumption that the angle of attack remains constant. Thus we arrive at a simple result, which can be rendered practically utilizable for determining the trajectory of an airplane descending at a constant steering angle.

  7. Airplane Upset Training Evaluation Report

    Science.gov (United States)

    Gawron, Valerie J.; Jones, Patricia M. (Technical Monitor)

    2002-01-01

    Airplane upset accidents are a leading factor in hull losses and fatalities. This study compared five types of airplane-upset training. Each group was composed of eight, non-military pilots flying in their probationary year for airlines operating in the United States. The first group, 'No aero / no upset,' was made up of pilots without any airplane upset training or aerobatic flight experience; the second group, 'Aero/no upset,' of pilots without any airplane-upset training but with aerobatic experience; the third group, 'No aero/upset,' of pilots who had received airplane-upset training in both ground school and in the simulator; the fourth group, 'Aero/upset,' received the same training as Group Three but in addition had aerobatic flight experience; and the fifth group, 'In-flight' received in-flight airplane upset training using an instrumented in-flight simulator. Recovery performance indicated that clearly training works - specifically, all 40 pilots recovered from the windshear upset. However few pilots were trained or understood the use of bank to change the direction of the lift vector to recover from nose high upsets. Further, very few thought of, or used differential thrust to recover from rudder or aileron induced roll upsets. In addition, recovery from icing-induced stalls was inadequate.

  8. Free-Spinning-Tunnel Investigation of a 0.034-Scale Model of the Production Version of the Chance Vought F7U-3 Airplane, TED No. NACA AD 3103

    Science.gov (United States)

    Klinar, Walter J.; Healy, Frederick M.

    1955-01-01

    An investigation of a 0.034-scale model of the production version of the Chance Vought F7U-3 airplane has been conducted in the Langley 20-foot free-spinning tunnel. The inverted and erect spin and recovery characteristics of the model were determined for the combat loading with the model in the clean condition and the effect of extending slats was investigated. A brief investigation of pilot ejection was also performed. The results indicate that the inverted spin-recovery characteristics of the airplane will be satisfactory by full rudder reversal. If the rudders can only be neutralized because of high pedal forces in the inverted spins, satisfactory recovery will be obtained if the auxiliary rudders can be moved to neutral or against the spin provided the stick is held full forward. Optimum control technique for satisfactory recovery from erect spins will be full rudder reversal in conjunction with aileron movement to full with the spin (stick right in a right spin). Extension of the slats will have a slightly adverse effect on recoveries from (1 inverted spins but will have a favorable effect on recoveries from erect spins. The results of brief tests indicate that if a pilot is ejected during a spin while a spin-recovery parachute is extended and fully inflated, he will probably clear the tail parachute.

  9. 77 FR 73282 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-10

    ... system for the angle of attack sensor, the total air temperature, and the pitot probes. We are issuing... angle of attack sensor, the total air temperature, and the pitot probes. Actions Since Issuance of NPRM... crew alerting for pitot heat malfunctions on Model 737 airplanes because that model incorporates ``CAPT...

  10. 78 FR 56150 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2013-09-12

    ... Airworthiness Directives; Piper Aircraft, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... published in the Federal Register. AD 2013-13-01 applies to certain Piper Aircraft, Inc. Models PA-46-310P... nitrile parts are installed for certain Piper Aircraft, Inc. Models PA-46-310P, PA-46-350P, PA-46R-350T...

  11. 77 FR 67561 - Airworthiness Directives; Univair Aircraft Corporation Airplanes

    Science.gov (United States)

    2012-11-13

    ... Airworthiness Directives; Univair Aircraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA...) that published in the Federal Register. That AD applies to certain Univair Aircraft Corporation Models... throughout the AD for Univair Aircraft Corporation Models (ERCO) 415-C, 415-CD, 415-D, E, G; (Forney) F-1 and...

  12. 77 FR 52205 - Airworthiness Directives; Univair Aircraft Corporation Airplanes

    Science.gov (United States)

    2012-08-29

    ... Airworthiness Directives; Univair Aircraft Corporation Airplanes AGENCY: Federal Aviation Administration (FAA... certain Univair Aircraft Corporation Models (ERCO) 415-C, 415-CD, 415-D, E, G; (Forney) F-1 and F-1A... inspection results. This new AD was prompted by a report of a Univair Aircraft Corporation Model ERCO 415-D...

  13. Planetary Airplane Extraction System Development and Subscale Testing

    Science.gov (United States)

    Teter, John E., Jr.

    2006-01-01

    The Aerial Regional-scale Environmental Survey (ARES) project will employ an airplane as the science platform from which to collect science data in the previously inaccessible, thin atmosphere of Mars. In order for the airplane to arrive safely in the Martian atmosphere, a number of sequences must occur. A critical element in the entry sequence at Mars is an extraction maneuver to separate the airplane quickly (in less than a second) from its protective backshell to reduce the possibility of re-contact, potentially leading to mission failure. This paper describes the development, testing, and lessons learned from building a 1/3 scale model of this airplane extraction system. This design, based on the successful Mars Exploration Rover (MER) extraction mechanism, employs a series of trucks rolling along tracks located on the surface of the central parachute can. Numerous tests using high speed video were conducted at the Langley Research Center to validate this concept. One area of concern was that that although the airplane released cleanly, a pitching moment could be introduced. While targeted for a Mars mission, this concept will enable environmental surveys by aircraft in other planetary bodies with a sensible atmosphere such as Venus or Saturn's moon, Titan.

  14. The X-15 airplane - Lessons learned

    Science.gov (United States)

    Dana, William H.

    1993-01-01

    The X-15 rocket research airplane flew to an altitude of 354,000 ft and reached Mach 6.70. In almost 200 flights, this airplane was used to gather aerodynamic-heating, structural loads, stability and control, and atmospheric-reentry data. This paper describes the origins, design, and operation of the X-15 airplane. In addition, lessons learned from the X-15 airplane that are applicable to designing and testing the National Aero-Space Plane are discussed.

  15. Response of equipment in nuclear power plants to airplane crash

    International Nuclear Information System (INIS)

    Schalk, M.; Woelfel, H.

    1976-01-01

    Nuclear power plants in Germany are to be designed against airplane crash. Two problems arise: first, the local problem of penetration as well as local destruction of the building and secondly the airplane induced vibrations of the whole building which cause loadings for secondary systems (equipment). This paper deals especially with the second problem. Floor response spectra due to airplane crash are presented for two different power plant buildings. The influence of various parameters (time history of excitation, direction and location of impact, mathematical model, soil, damping, etc.) are discussed. A comparison with the results of earthquake loading is given. Suggestions are made for developing suitable floor design spectra and using them to analyse multidegree-of-freedom systems. However, the paper gives only a partial answer to the questions arising because of some important restrictions which had to be made. Studies concerning these restrictions are still being conducted and will be presented in a separate paper. (Auth.)

  16. 76 FR 61555 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2011-10-05

    ... pieces unit welded, instead of 4 pieces unit with 3 welds (old design) as pictured in Appendix 1 of this... pre-modification 02447. Blue and Green. A300 airplanes post-modification 02447 Blue. A300-600 airplanes Blue. A310 airplanes Green. Table 2--Applicable Service Information Airbus Mandatory Service...

  17. 14 CFR 125.355 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 125.355 Section 125.355...: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Flight Release Rules § 125.355 Airplane...

  18. 78 FR 40074 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0465; Directorate Identifier 2012-NM-085-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... series airplanes. This proposed AD was prompted by a determination that oxygen generators installed on a... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  19. 78 FR 40057 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-07-03

    ...-0467; Directorate Identifier 2013-NM-023-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports of certain sliding windows that were... from safely evacuating the airplane during an emergency. DATES: We must receive comments on this...

  20. 78 FR 8054 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-02-05

    ...-1321; Directorate Identifier 2011-NM-147-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A310 series airplanes. The existing AD currently requires repetitive inspections for fatigue cracking... information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on...

  1. 14 CFR 121.605 - Airplane equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane equipment. 121.605 Section 121.605..., FLAG, AND SUPPLEMENTAL OPERATIONS Dispatching and Flight Release Rules § 121.605 Airplane equipment. No person may dispatch or release an airplane unless it is airworthy and is equipped as prescribed in § 121...

  2. 78 FR 46536 - Airworthiness Directives; Airbus Airplanes

    Science.gov (United States)

    2013-08-01

    ...-0668; Directorate Identifier 2013-NM-017-AD] RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... B4-600R series airplanes. This proposed AD was prompted by reports of cracks found in the bottom wing... at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the...

  3. Wind-Tunnel Investigation at Low Speed of the Yawing Stability Derivatives of a 1/9-Scale Powered Model of the Convair XFY-1 Vertically Rising Airplane, TED No. NACA DE 373

    Science.gov (United States)

    Queijo, M. J.; Wolhart, w. D.; Fletcher, H. S.

    1953-01-01

    An experimental investigation has been conducted in the Langley stability tunnel at low speed to deter+nine the yawing stability derivatives of a 1/9-scale powered model of the Convair XFY-1 vertically rising airplane. Effects of thrust coefficient were investigated for the complete model and for certain components of the model. Effects of control deflections and of propeller blade angle were investigated for the complete model. Most of the tests were made through an angle-of-attack range from about -4deg to 29deg, and the thrust coefficient range was from 0 to 0.7. In order to expedite distribution of these data, no analysis of the data has been prepared for this.

  4. Wind-Tunnel Investigation at Low Speed of the Rolling Stability Derivatives of a 1/9-Scale Powered Model of the Convair XFY-1 Vertically Rising Airplane, TED No. NACA DE 373

    Science.gov (United States)

    Queijo, M. J.; Wolhart, Walter D.; Fletcher, H. S.

    1953-01-01

    An experimental investigation has been conducted in the Langley stability tunnel at low speed to determine the rolling stability derivatives of a 1/9-scale powered model of the Convair XFY-1 vertically rising airplane. Effects of thrust coefficient were investigated for the complete model and for certain components of the model. Effects of control deflections and of propeller blade angle were investigated for the complete model. Most of the tests were made through an angle-of-attack range from about -4deg to 29deg, and the thrust coefficient range was from 0 to 0.7. In order to expedite distribution of these data, no analysis of the data has been prepared for this paper.

  5. The Effect of an Operating Propeller on the Aerodynamic Characteristics of a 1/10-Scale Model of the Lockheed XFV-1 Airplane at High Subsonic Speeds (TED No. NACA DE-377)

    Science.gov (United States)

    Sutton, Fred B.; Buell, Donald A.

    1952-01-01

    An investigation was conducted in the Ames 12-foot pressure wind tunnel to determine the effect of an operating propeller on the aerodynamic characteristics of a l/l9-scale model of the Lockheed XFV-1 airplane, Several full-scale power conditions were simulated at Mach numbers from 0.50 to 0.92; the.Reynolds number was constant at 1,7 million. Lift, longitudinal force, pitch, roll, and yaw characteristics, determined with and without power, are presented for the complete model and for various combinations of model components, Results of an investigation to determine the characteristics of the dual-rotating propeller used on the model are given also,

  6. Investigation of the Low-Speed Stability and Control Characteristics of a 1/10-Scale Model of the Douglas XF4D-1 Airplane in the Langley Free-Flight Tunnel TED No. NACA DE 349

    Science.gov (United States)

    Johnson, Joseph L.

    1951-01-01

    An investigation of the low-speed, power-off stability and control characteristics of a 1/10-scale model of the Douglas XF4D-1 airplane has been made in the Langley free-flight tunnel. The model was flown with leading-edge slats retracted and extended over a lift-coefficient range from 0.5 to the stall. Only relatively low-altitude conditions were simulated and no attempt was made to determine the effect on the stability characteristics of freeing the controls. The longitudinal stability and control characteristics of the model were satisfactory for all conditions investigated except near the stall with slats extended, where the model had a slight nosing-up tendency. The lateral stability and control characteristics of the model were considered satisfactory for all conditions investigated except near the stall with slats retracted, where a change in sign of the static- directional-stability parameter Cn(sub beta) caused the model to be directionally divergent. The addition of an extension to the top of the vertical tail did not increase Cn(sub beta) enough to eliminate the directional divergence of the model, but a large increase in Cn(sub beta) that was obtainable by artificial means appeared to eliminate the divergence and flights near the stall could be made. Artificially increasing the stability derivative-Cn(sub r) (yawing moment due to yawing) and Cn(sub p) (yawing moment due to rolling) had little effect on the divergence for the range of these parameters investigated. Calculations indicate that the damping of the lateral oscillation of the airplane with slats retracted or extended will be satisfactory at sea level but will be only marginally satisfactory at 40,000 feet.

  7. Flight Test of the Lateral Stability of a 0.133-Scale Model of the Convair XFY-1 Airplane with Windmilling Propellers at Mach Numbers from 0.70 to 1.12 (TED No. NACA DE 369)

    Science.gov (United States)

    Hollinger, James A.; Mitcham, Grady L.

    1955-01-01

    A flight test of a rocket-propelled model of the Convair XFY-1 airplane was conducted to determine the lateral stability and control characteristics, The 0.133-scale model had windmilling propellers for this test, which covered a Mach number range of O.70 to 1.12. The center of gravity was located at 13.9 percent of the mean aerodynamic chord. The methods of analysis included both a solution by vector diagrams and simple one- and two-degree-of-freedom methods. The model was both statically and dynamically stable throughout the speed range of the testa The roll damping was good, and the slope of the side-force curve varied little with speed. The rudder was effective throughout the test speed range, although it was reduced to about 43 percent of its subsonic value at supersonic speeds.

  8. Building concepts against airplane crash

    International Nuclear Information System (INIS)

    Henkel, F.O.; Woelfel, H.

    1984-01-01

    In Germany safety related buildings of nuclear facilities as well as their equipment are to be designed against airplane crash. While the safety of the structure itself can always be guaranteed by structural means, the induced vibrations may cause severe problems for the equipment. Considerable effort was expended in recent years to comprehend the load case airplane crash in a more exact manner and to evaluate reasonable floor response spectra. Besides this analytical effort, investigations are cited to minimize the induced vibrations by new structural concepts. The present paper gives a survey concerning the development of structural concepts, culminating in the double shell structures that are state of the art today. Then the idea of spring supports, as it is known for the aseismic foundation of buildings, is further developed to a new spring concept which reduces the induced vibrations in an optimum way in the load case airplane crash and which additionally isolates earthquake vibrations. (orig.)

  9. Air resistance measurements on actual airplane parts

    Science.gov (United States)

    Weiselsberger, C

    1923-01-01

    For the calculation of the parasite resistance of an airplane, a knowledge of the resistance of the individual structural and accessory parts is necessary. The most reliable basis for this is given by tests with actual airplane parts at airspeeds which occur in practice. The data given here relate to the landing gear of a Siemanms-Schuckert DI airplane; the landing gear of a 'Luftfahrzeug-Gesellschaft' airplane (type Roland Dlla); landing gear of a 'Flugzeugbau Friedrichshafen' G airplane; a machine gun, and the exhaust manifold of a 269 HP engine.

  10. Flight Determination of the Longitudinal Stability Characteristics of a 0.133-Scale Rocket-Powered Model of the Consolidated Vultee XFY-1 Airplane without Propellers at Mach Numbers from 0.73 to 1.19, TED No. NACA DE 369

    Science.gov (United States)

    Hastings, Earl E., Jr.; Mitcham, Grady L.

    1954-01-01

    A flight test has been conducted to determine the longitudinal stability and control,characteristics of a 0.133-scale model of the Consolidated Vultee XFY-1 airplane without propellers for the Mach number range between 0.73 and 1.19.

  11. 77 FR 5730 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-02-06

    ... necessary; and, for certain MLG shock strut assemblies, replacement or rework of the apex nut. Since we...) Replacement or Rework of the Apex Nut for Model CL-600-2C10 Airplanes For any MLG shock strut assembly... hours after May 18, 2011, replace or rework the apex nut, in accordance with Part B of the...

  12. 77 FR 30185 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-05-22

    ... corrective actions if necessary; and, for certain MLG shock strut assemblies, replacement or rework of the... Replacement or Rework of the Apex Nut for Model CL-600- 2C10 Airplanes This paragraph restates the... rework the apex nut, in accordance with Part B of the Accomplishment Instructions of Bombardier Service...

  13. 77 FR 73897 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-12

    ... Company Model 757 airplanes. This AD was prompted by a report of in-flight fracture of the right...., Renton, WA. For information on the availability of this material at the FAA, call 425-227-1221. Examining... called DC-3145 potting compound, would be acceptable to use in place of the missing cover. The procedure...

  14. 77 FR 21426 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-04-10

    ... each comment. Request to Withdraw the NPRM (76 FR 54405, September 1, 2011) United Parcel Service (UPS... Company Model 747 airplanes. This AD was prompted by reports of fractured latch pins found in service... incorporation by reference of certain publications listed in the AD as of May 15, 2012. ADDRESSES: For service...

  15. 77 FR 65642 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-10-30

    ... the battery direct current (DC) bus. AAL added that the wing fuel pump relays and fuel cross-feed.... That NPRM proposed to require repetitive operational tests of the engine fuel suction feed of the fuel... occurrences on Model 737-400 airplanes of total loss of boost pump pressure of the fuel feed system, followed...

  16. 78 FR 9796 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2013-02-12

    ... (2) Model 172S, S/N l72S11074 through 172S11193. (d) Subject Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 2820, Aircraft Fuel Distribution System. (e) Unsafe... Airworthiness Directives; Cessna Aircraft Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT...

  17. 76 FR 70379 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Science.gov (United States)

    2011-11-14

    ...) Subject Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code Fuel, 28...-1245; Directorate Identifier 2011-CE-033-AD; RIN 2120-AA64] Airworthiness Directives; Cessna Aircraft... certain Cessna Aircraft Company (Cessna) Models 172R and 172S airplanes. The existing AD requires you to...

  18. 78 FR 28128 - Airworthiness Directives; the Boeing Company Airplanes

    Science.gov (United States)

    2013-05-14

    ...) of America Code 2800, Aircraft Fuel System. (e) Unsafe Condition This AD was prompted by reports of... occurrences on Model 737-400 airplanes of total loss of boost pump pressure of the fuel feed system, followed by loss of fuel system suction feed capability on one engine, and in-flight shutdown of the engine...

  19. 77 FR 49389 - Airworthiness Directives; Revo, Incorporated Airplanes

    Science.gov (United States)

    2012-08-16

    ... attachment fitting and repetitive visual inspections of the fitting for any evidence of fretting, cracking... informed the FAA that while the drawing numbers are different, the attachment fittings on the Model..., Small Airplane Directorate, 901 Locust St., Kansas City, Missouri 64106. For information on the...

  20. 77 FR 37342 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-21

    ...., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service... Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket.... Model CL-600-2A12 (CL-601) airplanes, serial numbers (S/Ns) 3001 through 3066 inclusive. (2) Bombardier...

  1. 77 FR 36129 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2012-06-18

    ... Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The..., 701, & 702) airplanes, serial numbers 10003 through 10331 inclusive. (2) Bombardier, Inc. Model CL-600... 15001 through 15279 inclusive. (d) Subject Air Transport Association (ATA) of America Code 36: Pneumatic...

  2. 78 FR 43768 - Airworthiness Directives; Learjet Inc. Airplanes

    Science.gov (United States)

    2013-07-22

    ... between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD... Learjet Model 45 airplanes, certificated in any category; serial numbers 45-002 through 45-380 inclusive, 45-382 through 45-396 inclusive, 45-398 through 45-405 inclusive, 45-2001 through 45-2114 inclusive...

  3. 78 FR 22806 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-04-17

    ...., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service... Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket... Variants) airplanes, serial numbers 5001 through 5194 inclusive. (2) Bombardier, Inc. Model CL-600-2B16 (CL...

  4. 77 FR 42455 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-07-19

    ...-0756; Directorate Identifier 2012-CE-012-AD] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft... adopt a new airworthiness directive (AD) for all Piper Aircraft, Inc. (type certificate previously held by The New Piper Aircraft Inc.) Models PA-18 and PA-19 airplanes. This proposed AD was prompted by...

  5. 77 FR 31169 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Science.gov (United States)

    2012-05-25

    ... Airworthiness Directives; Piper Aircraft, Inc. Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... Piper Aircraft, Inc. (type certificate previously held by The New Piper Aircraft Inc.) Models PA-31T and..., contact Piper Aircraft, Inc., 926 Piper Drive, Vero Beach, Florida 32960; telephone: (772) 567-4361...

  6. 78 FR 23110 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2013-04-18

    ... pressure, resulting in improper flow of oxygen through the passenger masks and injury to passengers if... Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD was prompted by a report... properly flow oxygen, and that a loud noise occurred in the overhead area, which was caused by the flex...

  7. 77 FR 74579 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2012-12-17

    ... Certification Office (ACO), 1701 Columbia Avenue, College Park, Georgia 30337; phone: 404-474-5566; fax: 404-474... Management Branch, ACE-102A, FAA, Atlanta Aircraft Certification Office (ACO), 1701 Columbia Avenue, College... directive (AD) for certain Gulfstream Aerospace Corporation Model GIV-X airplanes. This AD requires...

  8. 77 FR 41891 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes

    Science.gov (United States)

    2012-07-17

    ... Certification Office, 1701 Columbia Avenue, College Park, GA 30337; phone 404-474-5548; fax 404-474-5605; email... directive (AD) for certain Gulfstream Aerospace Corporation Model G-IV, GIV-X, GV, and GV-SP airplanes. This... received, and other information. The street address for the Docket Office (phone: 800-647-5527) is in the...

  9. 77 FR 54787 - Airworthiness Directives; M7 Aerospace LLC Airplanes

    Science.gov (United States)

    2012-09-06

    ... Airworthiness Directives; M7 Aerospace LLC Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION... Aerospace LLC Models SA226-AT, SA226-T, SA226-T(B), SA226-TC, SA227-AC (C-26A), SA227-BC (C-26A), SA227-CC..., contact M7 Aerospace LP, 10823 NE Entrance Road, San Antonio, Texas 78216; phone: (210) 824- 9421; fax...

  10. 78 FR 12256 - Airworthiness Directives; Embraer S.A. Airplanes

    Science.gov (United States)

    2013-02-22

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Embraer S.A. Model ERJ 170 and... unit (APU) electronic starter controller (ESC) power cables and the airplane tail cone firewall. This... written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed...

  11. 78 FR 37701 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Science.gov (United States)

    2013-06-24

    ... Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes AGENCY: Federal Aviation Administration (FAA... directive (AD) for Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC- 6/350-H1, PC-6/350-H2... components and the flap actuator could result in loss of control. We are issuing this proposed AD to require...

  12. 77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-12-04

    ... Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT... directive (AD) that applies to certain The Boeing Company Model 737-200, -200C, - 300, and -400 series... related investigative and corrective actions, and revise certain inspection types. This proposed AD would...

  13. Preliminary Results Obtained from Flight Test of a Rocket Model Having the Tail Only of the Grumman XF10F Airplane Configuration, TED No. NACA DE 354

    Science.gov (United States)

    Gardner, William N.; Edmondson, James L.

    1950-01-01

    A flight test was made to determine the servoplane effectiveness and stability characteristics of the free-floating horizontal stabilizer to be used on the XF10F airplane. The results of this test indicate that servoplane effectiveness is practically constant through the speed range up to a Mach number of 1.15, and the stabilizer static stability is satisfactory. A loss of damping occurs over a narrow Mach number range near M = 1.0, resulting in dynamic instability of the stabilizer in this narrow range. Above M = 1.0 there is a gradual positive trim change of the stabilizer.

  14. Investigation of the Spin and Recovery Characteristics of a 0.057-Scale Model of the Modified Chance Vought XF7U-1 Airplane. TED No. NACA DE 311

    Science.gov (United States)

    Berman, Theodore; Pumphrey, Norman E.

    1950-01-01

    An investigation has been conducted in the Langley 20-foot free-spinning tunnel to determine the spin and recovery characteristics of a 0.057-scale model of the modified Chance Vought XF7U-1 airplane. The primary change in the design from that previously tested was a revision of the twin vertical tails. Tests were also made to determine the effect of installation of external wing tanks. The results indicated that the revision in the vertical tails did not greatly alter the spin and recovery characteristics of the model and recovery by normal use of controls (fill rapid rudder reversal followed approximately one-half turn later by movement of the stick forward of neutral) was satisfactory. Adding the external wing tanks to cause the recovery characteristics to become critical and border on an unsatisfactory condition; however, it was shown that satisfactory recovery could be obtained by jettisoning the tanks, followed by normal recovery technique.

  15. Flight controller design of unmanned airplane for radiation monitoring system via structured robust controller design using multiple model approach. Radiation monitoring flight in Namie-machi in Fukushima prefecture

    International Nuclear Information System (INIS)

    Sato, Masayuki; Muraoka, Koji; Hozumi, Koki; Sanada, Yukihisa; Yamada, Tsutomu; Torii, Tatsuo

    2015-01-01

    Due to the tragic accident of radioactive contaminant spread from Fukushima Dai-ichi nuclear power plant, the necessity of unmanned systems for radiation monitoring has been increasing. This paper concerns the flight controller design of an unmanned airplane which has been developed for radiation monitoring around the power plant. The flight controller consists of conventional control elements, i.e. Stability/Control Augmentation System (S/CAS) with PI controllers and guidance loops with PID controllers. The gains in these controllers are designed by minimizing appropriately defined cost functions for several possible models and disturbances to produce structured robust flight controllers. (This method is called as 'multiple model approach'.) Control performance of our flight controller was evaluated through flight tests and a primitive flight of radiation monitoring in Namie-machi in Fukushima prefecture was conducted in Jan. 2014. Flight results are included in this paper. (author)

  16. Paper Airplanes: A Classroom Activity

    Science.gov (United States)

    Painter, Richard A.

    1976-01-01

    A learning experience is described for upper elementary or junior high students involving the manufacture, transportation, and marketing of a product for consumers. Steps are given and roles are assigned for students to convert raw material (paper) to a finished product (paper airplanes) and to sell it. (AV)

  17. High-Speed Wind-Tunnel Investigation of the Lateral Stability Characteristics of a 0.10-Scale Model of the Grumman XF9F-2 Airplane, TED No. NACA DE 301

    Science.gov (United States)

    Polhamus, Edward C.; King, Thomas J., Jr.

    1949-01-01

    An investigation was made in the Langley high-speed 7- by 10-foot tunnel to determine the high-speed lateral and directional stability characteristics of a 0.10-scale model of the Grumman XF9F-2 airplane in the Mach number range from 0.40 to 0.85. The results indicate that static lateral and directional stability is present throughout the Mach number range investigated although in the Mach number range from 0.75 to 0.85 there is an appreciable decrease in rolling moment due to sideslip. Calculations of the dynamic stability indicate that according to current flying-quality requirements the damping of the lateral oscillation, although probably satisfactory for the sea-level condition, may not be satisfactory for the majority of the altitude conditions investigated

  18. Small-scale fixed wing airplane software verification flight test

    Science.gov (United States)

    Miller, Natasha R.

    The increased demand for micro Unmanned Air Vehicles (UAV) driven by military requirements, commercial use, and academia is creating a need for the ability to quickly and accurately conduct low Reynolds Number aircraft design. There exist several open source software programs that are free or inexpensive that can be used for large scale aircraft design, but few software programs target the realm of low Reynolds Number flight. XFLR5 is an open source, free to download, software program that attempts to take into consideration viscous effects that occur at low Reynolds Number in airfoil design, 3D wing design, and 3D airplane design. An off the shelf, remote control airplane was used as a test bed to model in XFLR5 and then compared to flight test collected data. Flight test focused on the stability modes of the 3D plane, specifically the phugoid mode. Design and execution of the flight tests were accomplished for the RC airplane using methodology from full scale military airplane test procedures. Results from flight test were not conclusive in determining the accuracy of the XFLR5 software program. There were several sources of uncertainty that did not allow for a full analysis of the flight test results. An off the shelf drone autopilot was used as a data collection device for flight testing. The precision and accuracy of the autopilot is unknown. Potential future work should investigate flight test methods for small scale UAV flight.

  19. Headache during airplane travel ("airplane headache"): first case in Greece.

    Science.gov (United States)

    Kararizou, Evangelia; Anagnostou, Evangelos; Paraskevas, George P; Vassilopoulou, Sofia D; Naoumis, Dimitrios; Kararizos, Grigoris; Spengos, Konstantinos

    2011-08-01

    Headache related to airplane flights is rare. We describe a 37-year-old female patient with multiple intense, jabbing headache episodes over the last 3 years that occur exclusively during airplane flights. The pain manifests during take-off and landing, and is located always in the left retro-orbital and frontotemporal area. It is occasionally accompanied by dizziness, but no additional symptoms occur. Pain intensity diminishes and disappears after 15-20 min. Apart from occasional dizziness, no other symptoms occur. The patient has a history of tension-type headache and polycystic ovaries. Blood tests and imaging revealed no abnormalities. Here, we present the first case in Greece. We review the current literature on this rare syndrome and discuss on possible pathophysiology and the investigation of possible co-factors such as anxiety and depression.

  20. Spoilers for roll control of light airplanes

    Science.gov (United States)

    Roskam, J.; Kohlman, D. L.; Wentz, W. H.

    1974-01-01

    The paper presents an overview of the state-of-the-art of roll control spoilers for light airplanes. Reasons for using spoilers on light airplanes are presented. Several classical objections to the use of spoilers of such airplanes are critically examined. It is shown that mechanically driven spoiler systems can be designed. Flight test results of a new mechanically driven spoiler on the Redhawk airplane are discussed. Tunnel data of spoilers on the new general aviation airfoil GA(W)-1 are presented. Finally, a bibliography on spoiler data is included.

  1. Blended Buffet-Load-Alleviation System for Fighter Airplane

    Science.gov (United States)

    Moses, Robert W.

    2005-01-01

    The capability of modern fighter airplanes to sustain flight at high angles of attack and/or moderate angles of sideslip often results in immersion of part of such an airplane in unsteady, separated, vortical flow emanating from its forebody or wings. The flows from these surfaces become turbulent and separated during flight under these conditions. These flows contain significant levels of energy over a frequency band coincident with that of low-order structural vibration modes of wings, fins, and control surfaces. The unsteady pressures applied to these lifting surfaces as a result of the turbulent flows are commonly denoted buffet loads, and the resulting vibrations of the affected structures are known as buffeting. Prolonged exposure to buffet loads has resulted in fatigue of structures on several airplanes. Damage to airplanes caused by buffeting has led to redesigns of airplane structures and increased support costs for the United States Air Force and Navy as well as the armed forces of other countries. Time spent inspecting, repairing, and replacing structures adversely affects availability of aircraft for missions. A blend of rudder-control and piezoelectric- actuator engineering concepts was selected as a basis for the design of a vertical-tail buffet-load-alleviation system for the F/A-18 airplane. In this system, the rudder actuator is used to control the response of the first tail vibrational mode (bending at a frequency near 15 Hz), while directional patch piezoelectric actuators are used to control the second tail vibrational mode (tip torsion at a frequency near 45 Hz). This blend of two types of actuator utilizes the most effective features of each. An analytical model of the aeroservoelastic behavior of the airplane equipped with this system was validated by good agreement with measured results from a full-scale ground test, flight-test measurement of buffet response, and an in-flight commanded rudder frequency sweep. The overall performance of the

  2. Numerical simulation of RCS for carrier electronic warfare airplanes

    OpenAIRE

    Yue Kuizhi; Liu Wenlin; Li Guanxiong; Ji Jinzu; Yu Dazhao

    2015-01-01

    This paper studies the radar cross section (RCS) of carrier electronic warfare airplanes. Under the typical naval operations section, the mathematical model of the radar wave’s pitch angle incidence range analysis is established. Based on the CATIA software, considering dynamic deflections of duck wing leading edge flaps, flaperons, horizontal tail, and rudder, as well as aircraft with air-to-air missile, anti-radiation missile, electronic jamming pod, and other weapons, the 3D models of carr...

  3. Assessment of community noise for a medium-range airplane with open-rotor engines

    Science.gov (United States)

    Kopiev, V. F.; Shur, M. L.; Travin, A. K.; Belyaev, I. V.; Zamtfort, B. S.; Medvedev, Yu. V.

    2017-11-01

    Community noise of a hypothetical medium-range airplane equipped with open-rotor engines is assessed by numerical modeling of the aeroacoustic characteristics of an isolated open rotor with the simplest blade geometry. Various open-rotor configurations are considered at constant thrust, and the lowest-noise configuration is selected. A two-engine medium-range airplane at known thrust of bypass turbofan engines at different segments of the takeoff-landing trajectory is considered, after the replacement of those engines by the open-rotor engines. It is established that a medium-range airplane with two open-rotor engines meets the requirements of Chapter 4 of the ICAO standard with a significant margin. It is shown that airframe noise makes a significant contribution to the total noise of an airplane with open-rotor engines at landing.

  4. Numerical simulation of RCS for carrier electronic warfare airplanes

    Directory of Open Access Journals (Sweden)

    Yue Kuizhi

    2015-04-01

    Full Text Available This paper studies the radar cross section (RCS of carrier electronic warfare airplanes. Under the typical naval operations section, the mathematical model of the radar wave’s pitch angle incidence range analysis is established. Based on the CATIA software, considering dynamic deflections of duck wing leading edge flaps, flaperons, horizontal tail, and rudder, as well as aircraft with air-to-air missile, anti-radiation missile, electronic jamming pod, and other weapons, the 3D models of carrier electronic warfare airplanes Model A and Model B with weapons were established. Based on the physical optics method and the equivalent electromagnetic flow method, by the use of the RCSAnsys software, the characteristics of carrier electronic warfare airplanes’ RCS under steady and dynamic flights were simulated under the UHF, X, and S radar bands. This paper researches the detection probability of aircraft by radars under the condition of electronic warfare, and completes the mathematical statistical analysis of the simulation results. The results show that: The Model A of carrier electronic warfare airplane is better than Model B on stealth performance and on discover probability by radar detection effectively.

  5. 76 FR 50706 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-16

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; e-mail: albert.mercado@faa... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...

  6. 76 FR 50405 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-08-15

    ...) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane...; e-mail: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a notice of... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...

  7. 76 FR 67341 - Airworthiness Directives; SOCATA Airplanes

    Science.gov (United States)

    2011-11-01

    ... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: albert.mercado@faa...: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...

  8. 14 CFR 129.25 - Airplane security.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane security. 129.25 Section 129.25 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR CARRIERS... AND FOREIGN OPERATORS OF U.S.-REGISTERED AIRCRAFT ENGAGED IN COMMON CARRIAGE General § 129.25 Airplane...

  9. Error Analysis of Determining Airplane Location by Global Positioning System

    OpenAIRE

    Hajiyev, Chingiz; Burat, Alper

    1999-01-01

    This paper studies the error analysis of determining airplane location by global positioning system (GPS) using statistical testing method. The Newton Rhapson method positions the airplane at the intersection point of four spheres. Absolute errors, relative errors and standard deviation have been calculated The results show that the positioning error of the airplane varies with the coordinates of GPS satellite and the airplane.

  10. 14 CFR 21.5 - Airplane or Rotorcraft Flight Manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airplane or Rotorcraft Flight Manual. 21.5... CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS General § 21.5 Airplane or Rotorcraft Flight Manual. (a) With each airplane or rotorcraft that was not type certificated with an Airplane or Rotorcraft Flight Manual...

  11. 14 CFR 125.75 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 125.75 Section 125... OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6... Airplane flight manual. (a) Each certificate holder shall keep a current approved Airplane Flight Manual or...

  12. Proton exchange membrane fuel cells for electrical power generation on-board commercial airplanes

    International Nuclear Information System (INIS)

    Pratt, Joseph W.; Klebanoff, Leonard E.; Munoz-Ramos, Karina; Akhil, Abbas A.; Curgus, Dita B.; Schenkman, Benjamin L.

    2013-01-01

    Highlights: ► We examine proton exchange membrane fuel cells on-board commercial airplanes. ► We model the added fuel cell system’s effect on overall airplane performance. ► It is feasible to implement an on-board fuel cell system with current technology. ► Systems that maximize waste heat recovery are the best performing. ► Current PEM and H 2 storage technology results in an airplane performance penalty. -- Abstract: Deployed on a commercial airplane, proton exchange membrane (PEM) fuel cells may offer emissions reductions, thermal efficiency gains, and enable locating the power near the point of use. This work seeks to understand whether on-board fuel cell systems are technically feasible, and, if so, if they could offer a performance advantage for the airplane when using today’s off-the-shelf technology. We also examine the effects of the fuel cell system on airplane performance with (1) different electrical loads, (2) different locations on the airplane, and (3) expected advances in fuel cell and hydrogen storage technologies. Through hardware analysis and thermodynamic simulation, we found that an additional fuel cell system on a commercial airplane is technically feasible using current technology. Although applied to a Boeing 787-type airplane, the method presented is applicable to other airframes as well. Recovery and on-board use of the heat and water that is generated by the fuel cell is an important method to increase the benefit of such a system. The best performance is achieved when the fuel cell is coupled to a load that utilizes the full output of the fuel cell for the entire flight. The effects of location are small and location may be better determined by other considerations such as safety and modularity. Although the PEM fuel cell generates power more efficiently than the gas turbine generators currently used, when considering the effect of the fuel cell system on the airplane’s overall performance we found that an overall

  13. 78 FR 17073 - Airworthiness Directives; Bombardier, Inc. Airplanes

    Science.gov (United States)

    2013-03-20

    ... Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The... numbers (S/Ns) 3001 through 3066 inclusive. (2) Bombardier, Inc. Model CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes, S/Ns 5001 through 5194 inclusive, 5301 through 5665 inclusive, and...

  14. An Investigation of the Free-Spinning and Recovery Characteristics of a 1/24-Scale Model of the Grumman F11F-1 Airplane with Alternate Nose Configurations with and without Wing Fuel Tanks, TED No. NACA AD 395

    Science.gov (United States)

    Bowman, James S., Jr.

    1958-01-01

    A supplementary investigation has been conducted in the langley 20-foot free-spinning tunnel on a l/24-scale model of the Grumman F11F-1 airplane to determine the spin and recovery characteristics with alternate nose configurations, the production version and the elongated APS-67 version, with and without empty and full wing tanks. When spins were obtained with either alternate nose configuration, they were oscillatory and recovery characteristics were considered unsatisfactory on the basis of the fact that very slow recoveries were indicated to be possible. The simultaneous extension of canards near the nose of the model with rudder reversal was effective in rapidly terminating the spin. The addition of empty wing tanks had little effect on the developed spin and recovery characteristics. The model did not spin erect with full wing tanks. For optimum recovery from inverted spins, the rudder should be reversed to 22O against the spin and simultaneously the flaperons should be moved with the developed spin; the stick should be held at or moved to full forward longitudinally. The minimum size parachute required to insure satisfactory recoveries in an emergency was found to be 12 feet in diameter (laid out flat) with a drag coefficient of 0.64 (based on the laid-out-flat diameter) and a towline length of 32 feet.

  15. Summary of Low-Lift Drag and Directional Stability Data from Rocket Models of the Douglas XF4D-1 Airplane with and without External Stores and Rocket Packets at Mach Numbers from 0.8 to 1.38 TED No. NACA DE-349

    Science.gov (United States)

    Mitcham, Grady L.; Blanchard, Willard S.; Hastings, Earl C., Jr.

    1952-01-01

    At the request of the Bureau of Aeronautics, Department of the Navy, an investigation at transonic and low supersonic speeds of the drag and longitudinal trim characteristics of the Douglas XF4D-1 airplane is being conducted by the Langley Pilotless Aircraft Research Division. The Douglas XF4D-1 is a jet-propelled, low-aspect-ratio, swept-wing, tailless, interceptor-type airplane designed to fly at low supersonic speeds. As a part of this investigation, flight tests were made using rocket- propelled 1/10- scale models to determine the effect of the addition of 10 external stores and rocket packets on the drag at low lift coefficients. In addition to these data, some qualitative values of the directional stability parameter C(sub n beta) and duct total-pressure recovery are also presented.

  16. Lift, Drag, Static Stability, and Buffet Boundaries of a Model of the McDonnell F3H-1N Airplane at Mach Numbers from 0.40 to 1.27, TED No. NACA DE 351

    Science.gov (United States)

    Crabill, Norman L.

    1956-01-01

    The National Advisory Committee for Aeronautics has conducted a flight test of a model approximating the McDonnell F3H-lN airplane configuration to determine its pitch-up and buffet boundaries, as well as the usual longitudinal stability derivatives obtainable from the pulsed- tail technique. The test was conducted by the freely flying rocket- boosted model technique developed at the Langley Laboratory; results were obtained at Mach numbers from 0.40 to 1.27 at corresponding Reynolds numbers of 2.6 x 10(exp 6) and 9.0 x 10(exp 6). The phenomena of pitch-up, buffet, and maximum lift were encountered at Mach numbers between 0.42 and 0.85. The lift-curve slope and wing-root bending-moment slope increased with increasing angle of attack, whereas the static stability decreased with angle of attack at subsonic speeds and increased at transonic speeds. There was little change in trim at low lift at transonic speeds.

  17. The Aerodynamic Characteristics in Pitch of a 1/15-Scale Model of the Grumman F11F-1 Airplane at Mach Numbers of 1.41, 1.61, and 2.01, TED No. NACA DE 390

    Science.gov (United States)

    Driver, Cornelius

    1956-01-01

    Tests have been made in the Langley 4- by 4-foot supersonic pressure tunnel at Mach numbers of 1.41, 1.61, and 2.01 to determine the static longitudinal stability and control characteristics of various arrangements of the Grumman F11F-1 airplane. Tests were made of the complete model and various combinations of its component parts and, in addition, the effects of various body modifications, a revised vertical tail, and wing fences on the longitudinal characteristics were determined. The results indicate that for a horizontal-tail incidence of -10 deg the trim lift coefficient varied from 0.29 at a Mach number of 1.61 to 0.23 at a Mach number of 2.01 with a corresponding decrease in lift-drag trim from 3.72 to 3.15. Stick-position instability was indicated in the low-supersonic-speed range. A photographic-type nose modification resulted in slightly higher values of minimum drag coefficient but did not significantly affect the static stability or lift-curve slope. The minimum drag coefficient for the complete model with the production nose remained essentially constant at 0.047 throughout the Mach number range investigated.

  18. Measurement of the Static Stability and Control and the Damping Derivatives of a 0.13-Scale Model of the Convair XFY-1 Airplane, TED No. NACA DE 368

    Science.gov (United States)

    Johnson, Joseph L.

    1954-01-01

    An investigation has been conducted to determine the static stability and control and damping in roll and yaw of a 0.13-scale model of the Convair XFY-1 airplane with propellers off from 0 deg to 90 deg angle of attack. The tests showed that a slightly unstable pitch-up tendency occurred simultaneously with a break in the normal-force curve in the angle-of-attack range from about 27 deg to 36 deg. The top vertical tail contributed positive values of static directional stability and effective dihedral up to an angle of attack of about 35 deg. The bottom tail contributed positive values of static directional stability but negative values of effective dihedral throughout the angle-of-attack range. Effectiveness of the control surfaces decreased to very low values at the high angles of attack, The model had positive damping in yaw and damping in roll about the body axes over the angle-of-attack range but the damping in yaw decreased to about zero at 90 deg angle of attack.

  19. Effect of Six Missile-Bay Baffle Configurations and a Rocket End Plate on Ejection Releases of an MB-1 Rocket from a 0.05 Scale Model of the Convair F-106A Airplane

    Science.gov (United States)

    Hinson, William F.; Lee, John B.

    1959-01-01

    As a continuation of an investigation of the release characteristics of an MB-1 rocket carried internally by the Convair F-106A airplane, six missile-bay baffle configurations and a rocket end plate have been investigated in the 27- by 27-inch preflight jet of the NASA Wallops Station. The MB-1 rocket used had retractable fins and was ejected from a missile bay modified by the addition of six different baffle configurations. For some tests a rocket end plate was added to the model. Dynamically scaled models (0.04956 scale) were tested at a simulated altitude of 22,450 feet and Mach numbers of 0.86, 1.59, and 1.98, and at a simulated altitude of 29,450 feet and a Mach number of 1.98. The results of this investigation indicate that the missile-bay baffle configurations and the rocket end plate may be used to reduce the positive pitch amplitude of the MB-1 rocket after release. The initial negative pitching velocity applied to the MB-1 rocket might then be reduced in order to maintain a near-level-flight attitude after release. As the fuselage angle of attack is increased, the negative pitch amplitude of the rocket is decreased.

  20. Recurring norovirus transmission on an airplane.

    Science.gov (United States)

    Thornley, Craig N; Emslie, Nicola A; Sprott, Tim W; Greening, Gail E; Rapana, Jackie P

    2011-09-01

    Previously reported outbreaks of norovirus gastroenteritis associated with aircraft have been limited to transmission during a single flight sector. During October 2009, an outbreak of diarrhea and vomiting occurred among different groups of flight attendants who had worked on separate flight sectors on the same airplane. We investigated the cause of the outbreak and whether the illnesses were attributable to work on the airplane. Information was obtained from flight attendants on demographic characteristics, symptoms, and possible transmission risk factors. Case patients were defined as flight attendants with diarrhea or vomiting airplane during 13-18 October 2009. Stool samples were tested for norovirus RNA. A passenger had vomited on the Boeing 777-200 airplane on the 13 October flight sector. Sixty-three (82%) of 77 flight attendants who worked on the airplane during 13-18 October provided information, and 27 (43%) met the case definition. The attack rate among flight attendants decreased significantly over successive flight sectors from 13 October onward (P airplane during successive flight sectors. Airlines should make provision for adequate disinfection of airplanes with use of products effective against norovirus and other common infectious agents after vomiting has occurred.

  1. Shuttle Laser Technology Experiment Facility (LTEF)-to-airplane lasercom experiment: Airplane considerations

    Science.gov (United States)

    Kalil, Ford

    1990-01-01

    NASA is considering the use of various airplanes for a Shuttle Laser Technology Experiment Facility (LTEF)-to-Airplane laser communications experiment. As supporting documentation, pertinent technical details are included about the potential use of airplanes located at Ames Research Center and Wallops Flight Facility. The effects and application of orbital mechanics considerations are also presented, including slant range, azimuth, elevation, and time. The pros and cons of an airplane equipped with a side port with a bubble window versus a top port with a dome are discussed.

  2. A Preliminary Analysis of the Flying Qualities of the Consolidated Vultee MX-813 Delta-Wing Airplane Configuration at Transonic and Low Supersonic Speeds as Determined from Flights of Rocket-Powered Models

    Science.gov (United States)

    Mitcham, Grady L.

    1949-01-01

    A preliminary analysis of the flying qualities of the Consolidated Vultee MX-813 delta-wing airplane configuration has been made based on the results obtained from the first two 1/8 scale models flown at the NACA Pilotless Aircraft Research Station, Wallop's Island, VA. The Mach number range covered in the tests was from 0.9 to 1.2. The analysis indicates adequate elevator control for trim in level flight over the speed range investigated. Through the transonic range there is a mild trim change with a slight tucking-under tendency. The elevator control effectiveness in the supersonic range is reduced to about one-half the subsonic value although sufficient control for maneuvering is available as indicated by the fact that 10 deg elevator deflection produced 5g acceleration at Mach number of 1.2 at 40,000 feet.The elevator control forces are high and indicate the power required of the boost system. The damping. of the short-period oscillation is adequate at sea-level but is reduced at 40,000 feet. The directional stability appears adequate for the speed range and angles of attack covered.

  3. 14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.

    Science.gov (United States)

    2010-01-01

    ... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are...-inoperative, en route, net flight path data in the Airplane Flight Manual, allows the airplane to fly from the... Airplane Flight Manual, allows the airplane to fly from the point where the two engines are assumed to fail...

  4. [A rarely known headache: Airplane travel headache].

    Science.gov (United States)

    Azman, Filiz; Erkılınç, Büşra; Çabalar, Murat; Çağırıcı, Sultan; Yayla, Vildan

    2017-01-01

    Recently, headache associated with airplane travel has gained importance with case reports and took its place in the classification of headache in 2013. This rare condition has different spesific characteristic from the primary headaches and its pathophysiology is not clear yet. In this case report, a 27-years-old female patient was diagnosed with the headache associated with airplane travel by history, examination and imaging findings. The possible pathophysiology and treatment were discussed.

  5. Mechanism behind phase transitions in airplane boarding process

    Science.gov (United States)

    Qiang, Shengjie; Jia, Bin; Huang, Qingxia; Gao, Ziyou

    2016-02-01

    A simple airplane boarding model is built much like an asymmetric exclusion process (ASEP). The dynamics of the model is constrained by local interference between passengers and global seat assignments for individuals. We perform extensive Monte Carlo simulations by using a parallel update rule to determine quantities like boarding time and sequence correlation. Our results clarify the scaling behavior in boarding process and identify a critical value of arrival time interval for boarding time threshold. Three different phases (steady, intermediate and linear) with respect to the boarding time are distinguished and the mechanism behind phase transition is further discussed.

  6. 77 FR 20522 - Airworthiness Directives; Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Airplanes

    Science.gov (United States)

    2012-04-05

    ..., Airframe Branch, ACE-117A, FAA, Atlanta Aircraft Certification Office (ACO), 1701 Columbia Avenue, College... airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model L... the manufacturer's original fatigue design life goal. This new AD adds Model L-1011-385-3 airplanes to...

  7. 77 FR 56991 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes

    Science.gov (United States)

    2012-09-17

    ... FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901....mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a supplemental notice of proposed.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...

  8. Perturbed Motion of Airplane and Safe Store Separation

    OpenAIRE

    S. C. Raisinghani; S. Rao

    1983-01-01

    A method is presented to predict the perturbed motion of an airplane following stores jettisoning. The mass, moment of inertia, forces, and moments acting on the airplane are suitable split into contributions from the stores and the rest of the airplane parts. The seperation of stores is assumed to result in a step change of mass, moment of intertai, forces, and moments contributed by stores. The resulting set of perturbed state equations of motion are solved for two illustrative airplane str...

  9. 77 FR 67557 - Special Conditions: ATR-GIE Avions de Transport Regional, Models ATR42-500 and ATR72-212A...

    Science.gov (United States)

    2012-11-13

    ..., Models ATR42-500 and ATR72-212A Airplanes; Aircraft Electronic System Security Protection From... exploited by unauthorized access to airplane systems, data buses, and servers. Therefore, these special... ATR42-500 and ATR72-212A airplanes. 1. Airplane Electronic System Security Protection from Unauthorized...

  10. A controls engineering approach for analyzing airplane input-output characteristics

    Science.gov (United States)

    Arbuckle, P. Douglas

    1991-01-01

    An engineering approach for analyzing airplane control and output characteristics is presented. State-space matrix equations describing the linear perturbation dynamics are transformed from physical coordinates into scaled coordinates. The scaling is accomplished by applying various transformations to the system to employ prior engineering knowledge of the airplane physics. Two different analysis techniques are then explained. Modal analysis techniques calculate the influence of each system input on each fundamental mode of motion and the distribution of each mode among the system outputs. The optimal steady state response technique computes the blending of steady state control inputs that optimize the steady state response of selected system outputs. Analysis of an example airplane model is presented to demonstrate the described engineering approach.

  11. 76 FR 77157 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2011-12-12

    ... airplane. A separated T/R piece could result in a rejected takeoff (RTO) and cause asymmetric thrust and... cause structural damage to the airplane, damage to other airplanes, or injury to people on the ground... be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Rebel Nichols...

  12. 14 CFR 121.503 - Flight time limitations: Pilots: airplanes.

    Science.gov (United States)

    2010-01-01

    ... Operations § 121.503 Flight time limitations: Pilots: airplanes. (a) A certificate holder conducting supplemental operations may schedule a pilot to fly in an airplane for eight hours or less during any 24... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Flight time limitations: Pilots: airplanes...

  13. 14 CFR 121.161 - Airplane limitations: Type of route.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane limitations: Type of route. 121... OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Aircraft Requirements § 121.161 Airplane... specifications, no certificate holder may operate a turbine-engine-powered airplane over a route that contains a...

  14. 14 CFR 121.303 - Airplane instruments and equipment.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane instruments and equipment. 121.303... Airplane instruments and equipment. (a) Unless otherwise specified, the instrument and equipment... airspeed limitation and item of related information in the Airplane Flight Manual and pertinent placards...

  15. 14 CFR 23.71 - Glide: Single-engine airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Glide: Single-engine airplanes. 23.71... AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Flight Performance § 23.71 Glide: Single-engine airplanes. The maximum horizontal distance traveled in still air, in nautical miles...

  16. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  17. Nonlinear analysis of a reactor building for airplane impact loadings

    International Nuclear Information System (INIS)

    Zimmermann, T.; Rodriguez, C.; Rebora, B.

    1981-01-01

    The purpose is to analyze the influence of material nonlinear behavior on the response of a reinforced concrete reactor building and on equipment response for airplane impact loadings. Two analyses are performed: first, the impact of a slow-flying commercial airplane (Boeing 707), then the impact of a fast flying military airplane (Phantom). (orig./HP)

  18. 14 CFR 121.141 - Airplane flight manual.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane flight manual. 121.141 Section 121... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Manual Requirements § 121.141 Airplane flight manual. (a) Each certificate holder shall keep a current approved airplane flight manual for each type of...

  19. 14 CFR 125.407 - Maintenance log: Airplanes.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance log: Airplanes. 125.407 Section... OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6... Maintenance log: Airplanes. (a) Each person who takes corrective action or defers action concerning a reported...

  20. 14 CFR 121.570 - Airplane evacuation capability.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane evacuation capability. 121.570... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Flight Operations § 121.570 Airplane evacuation capability. (a) No person may cause an airplane carrying passengers to be moved on the surface, take off, or...

  1. 14 CFR 125.91 - Airplane requirements: General.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane requirements: General. 125.91... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD CAPACITY OF 6,000 POUNDS OR MORE; AND RULES GOVERNING PERSONS ON BOARD SUCH AIRCRAFT Airplane Requirements...

  2. 77 FR 57529 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ... 737-600, -700, -700C, -800, -900, or -900ER series airplanes, a full-scale fatigue test article was... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM...-800 series airplanes. This proposed AD was prompted by reports of early fatigue cracks at chem- mill...

  3. 77 FR 57539 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ... 737-600, -700, -700C, -800, -900, or -900ER series airplanes, a full-scale fatigue test article was... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM...-900 and -900ER series airplanes. This proposed AD was prompted by reports of early fatigue cracks at...

  4. 77 FR 57541 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ... 737-600, -700, -700C, -800, -900, or -900ER series airplanes, a full-scale fatigue test article was... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM...-600 series airplanes. This proposed AD was prompted by reports of early fatigue cracks at chem- mill...

  5. 77 FR 57536 - Airworthiness Directives; The Boeing Company Airplanes

    Science.gov (United States)

    2012-09-18

    ... -900ER series airplanes, a full-scale fatigue test article was inspected for skin cracks at similar... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM...-700 and -700C series airplanes. This proposed AD was prompted by reports of early fatigue cracks at...

  6. 78 FR 11089 - Special Conditions: Bombardier Aerospace, Model BD-500-1A10 and BD-500-1A11 Airplanes; Sidestick...

    Science.gov (United States)

    2013-02-15

    ...; Special Conditions No. 25-477-SC] Special Conditions: Bombardier Aerospace, Model BD-500-1A10 and BD-500... special conditions. SUMMARY: These special conditions are issued for the Bombardier Aerospace Model BD-500...: Background On December 10, 2009, Bombardier Aerospace applied for a type certificate for their new Model BD...

  7. Free-Spinning-Tunnel Investigation to Determine the Effect of Spin-Recovery Rockets and Thrust Simulation on the Recovery Characteristics of a 1/21-Scale Model of the Chance Vought F7U-3 Airplane, TED No. NACA AD 3103

    Science.gov (United States)

    Burk, Sanger H., Jr.; Healy, Frederick M.

    1955-01-01

    An investigation of a l/21-scale model of the Chance Vought F7U-3 airplane in the co&at-load- condition has been conducted in the Langley 20-foot free-spinning tunnel, The recovery characteristics of the model were determined by use of spin-recovery rockets for the erect and inverted spinning condition. The rockets were so placed as to provide either a yawing or rolling moment about the model center of gravity. Also included in the investigation were tests to determine the effect of simulated engine thrust on the recovery characteristics of the model. On the basis of model tests, recoveries from erect and inverted spins were satisfactory when a yawing moment of 22,200 foot-pounds (full scale) was provided against the spin by rockets attached to the wing tips; the anti-spin yawing moment was applied for approximately 9 seconds, (full scale). Satisfactory recoveries were obtained from erect spins when a rolling moment of 22,200 foot-pounds (full scale) was provided with the spin (rolls right wing down in right spin). Although the inverted spin was satisfactorily terminated when a rolling moment of equal magnitude was provided, a roll rocket was not considered to be an optimum spin-recovery device to effect recoveries from inverted spins for this airplane because of resulting gyrations during spin recovery. Simulation of engine thrust had no apparent effect on the spin recovery characteristics.

  8. 14 CFR 135.422 - Aging airplane inspections and records reviews for multiengine airplanes certificated with nine...

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records reviews for multiengine airplanes certificated with nine or fewer passenger seats. 135.422 Section 135.422... Maintenance, and Alterations § 135.422 Aging airplane inspections and records reviews for multiengine...

  9. Effects of Inlet Modification and Rocket-Rack Extension on the Longitudinal Trim and Low-Lift Drag of the Douglas F5D-1 Airplane as Obtained with a 0.125-Scale Rocket-Boosted Model Between Mach Numbers of 0.81 and 1.64: TED No. NACA AD 399

    Science.gov (United States)

    Hastings, Earl C., Jr.; Dickens, Waldo L.

    1957-01-01

    A flight investigation was conducted to determine the effects of inlet modification and rocket-rack extension on the longitudinal trim and low-lift drag of the Douglas F5D-1 airplane. The investigation was conducted with a 0.125-scale rocket-boosted model between Mach Numbers of 0.81 and 1.64. This paper presents the changes in trim angle of attack, trim lift coefficient, and low-lift drag caused by the modified inlets alone over a small part of the test Mach number range and by a combination of the modified inlets and extended rocket racks throughout the remainder of the test.

  10. Contributions of Transonic Dynamics Tunnel Testing to Airplane Flutter Clearance

    Science.gov (United States)

    Rivera, Jose A.; Florance, James R.

    2000-01-01

    The Transonic Dynamics Tunnel (TDT) became in operational in 1960, and since that time has achieved the status of the world's premier wind tunnel for testing large in aeroelastically scaled models at transonic speeds. The facility has many features that contribute to its uniqueness for aeroelastic testing. This paper will briefly describe these capabilities and features, and their relevance to aeroelastic testing. Contributions to specific airplane configurations and highlights from the flutter tests performed in the TDT aimed at investigating the aeroelastic characteristics of these configurations are presented.

  11. A new 2D climate model with chemistry and self consistent eddy-parameterization. The impact of airplane NO{sub x} on the chemistry of the atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Gepraegs, R; Schmitz, G; Peters, D [Institut fuer Atmosphaerenphysik, Kuehlungsborn (Germany)

    1998-12-31

    A 2D version of the ECHAM T21 climate model has been developed. The new model includes an efficient spectral transport scheme with implicit diffusion. Furthermore, photodissociation and chemistry of the NCAR 2D model have been incorporated. A self consistent parametrization scheme is used for eddy heat- and momentum flux in the troposphere. It is based on the heat flux parametrization of Branscome and mixing-length formulation for quasi-geostrophic vorticity. Above 150 hPa the mixing-coefficient K{sub yy} is prescribed. Some of the model results are discussed, concerning especially the impact of aircraft NO{sub x} emission on the model chemistry. (author) 6 refs.

  12. A new 2D climate model with chemistry and self consistent eddy-parameterization. The impact of airplane NO{sub x} on the chemistry of the atmosphere

    Energy Technology Data Exchange (ETDEWEB)

    Gepraegs, R.; Schmitz, G.; Peters, D. [Institut fuer Atmosphaerenphysik, Kuehlungsborn (Germany)

    1997-12-31

    A 2D version of the ECHAM T21 climate model has been developed. The new model includes an efficient spectral transport scheme with implicit diffusion. Furthermore, photodissociation and chemistry of the NCAR 2D model have been incorporated. A self consistent parametrization scheme is used for eddy heat- and momentum flux in the troposphere. It is based on the heat flux parametrization of Branscome and mixing-length formulation for quasi-geostrophic vorticity. Above 150 hPa the mixing-coefficient K{sub yy} is prescribed. Some of the model results are discussed, concerning especially the impact of aircraft NO{sub x} emission on the model chemistry. (author) 6 refs.

  13. 77 FR 12991 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes Equipped With a Certain...

    Science.gov (United States)

    2012-03-05

    ... Certification Office, FAA, 1701 Columbia Avenue, College Park, Georgia 30337; phone: (404) 474-5583; fax: (404... applies to all Hawker Beechcraft Corporation Models 95-C55, D55, E55, 58, and 58A airplanes equipped with... the Docket Office (phone: 800-647-5527) is Document Management Facility, U.S. Department of...

  14. Piercing of the containment shell of a reactor building in case of airplane crash

    International Nuclear Information System (INIS)

    Herzog, M.

    1978-01-01

    The author presents a simple calculation model for a realistic check of the piercing safety of containments of reactor buildings in case of airplane crash. Its application is illustrated by a numerical example (Starfighter crash on the Unterweser nuclear power plant). (orig.) [de

  15. Effect of Various Modifications on Drag and Longitudinal Stability and Control Characteristics at Transonic Speeds of a Model of the XF7U-1 Tailless Airplane: NACA Wing-FLow Method, TED No. NACA DE 307

    Science.gov (United States)

    Sawyer, Richard H.; Trant, James P., Jr.

    1950-01-01

    An investigation was made by the NACA wing-flow method to determine the drag, pitching-moment, lift, and angle-of-attack characteristics at transonic speeds of various configurations of a semispan model of an early configuration of the XF7U-1 tailless airplane. The results of the tests indicated that for the basic configuration with undeflected ailavator, the zero-lift drag rise occurred at a Mach number of about 0.85 and that about a five-fold increase in drag occurred through the transonic speed range. The results of the tests also indicated that the drag increment produced by -8.0 degrees deflection of the ailavator increased with increase in normal-force coefficient and was smaller at speeds above than at speeds below the drag rise. The drag increment produced by 35 degree deflection of the speed brakes varied from 0.040 to 0.074 depending on the normal-force coefficient and Mach number. These values correspond to drag coefficients of about 0.40 and 0.75 based on speed-brake frontal area. Removal of the fin produced a small positive drag increment at a given normal-force coefficient at speeds during the drag rise. A large forward shift of the neutral-point location occurred at Mach numbers above about 0.90 upon removal of the fin, and also a considerable forward shift throughout the Mach number range occurred upon deflection of the speed brakes. Ailavator ineffectiveness or reversal at low deflections, similar to that determined in previous tests of the basic configuration of the model in the Mach number range from about 0.93 to 1.0, was found for the fin-off configuration and for the model equipped with skewed (more highly sweptback) hinge-line ailavators. With the speed brakes deflected, little or no loss in the incremental pitching moment produced by deflection of the ailavator from O degrees to -8.00 degrees occurred in the Mach number range from 0.85 to 1.0 in contrast to a considerable loss found in previous tests with the speed brakes off.

  16. Atmospheric electron flux at airplane altitude

    International Nuclear Information System (INIS)

    Enomoto, R.; Chiba, J.; Ogawa, K.; Sumiyoshi, T.; Takasaki, F.; Kifune, T.; Matsubara, Y.; Nishimura, J.

    1991-01-01

    We have developed a new detector to systematically measure the cosmic-ray electron flux at airplane altitudes. We loaded a lead-glass-based electron telescope onto a commercial cargo airplane. The first experiment was carried out using the air route between Narita (Japan) and Sydney (Australia); during this flight we measured the electron flux at various altitudes and latitudes. The thresholds of the electron energies were 1, 2, and 4 GeV. The results agree with a simple estimation using one-dimensional shower theory. A comparison with a Monte Carlo calculation was made

  17. The risk of groundling fatalities from unintentional airplane crashes.

    Science.gov (United States)

    Thompson, K M; Rabouw, R F; Cooke, R M

    2001-12-01

    The crashes of four hijacked commercial planes on September 11, 2001, and the repeated televised images of the consequent collapse of the World Trade Center and one side of the Pentagon will inevitably change people's perceptions of the mortality risks to people on the ground from crashing airplanes. Goldstein and colleagues were the first to quantify the risk for Americans of being killed on the ground from a crashing airplane for unintentional events, providing average point estimates of 6 in a hundred million for annual risk and 4.2 in a million for lifetime risk. They noted that the lifetime risk result exceeded the commonly used risk management threshold of 1 in a million, and suggested that the risk to "groundlings" could be a useful risk communication tool because (a) it is a man-made risk (b) arising from economic activities (c) from which the victims derive no benefit and (d) exposure to which the victims cannot control. Their results have been used in risk communication. This analysis provides updated estimates of groundling fatality risks from unintentional crashes using more recent data and a geographical information system approach to modeling the population around airports. The results suggest that the average annual risk is now 1.2 in a hundred million and the lifetime risk is now 9 in ten million (below the risk management threshold). Analysis of the variability and uncertainty of this estimate, however, suggests that the exposure to groundling fatality risk varies by about a factor of approximately 100 in the spatial dimension of distance to an airport, with the risk declining rapidly outside the first 2 miles around an airport. We believe that the risk to groundlings from crashing airplanes is more useful in the context of risk communication when information about variability and uncertainty in the risk estimates is characterized, but we suspect that recent events will alter its utility in risk communication.

  18. Simulated airplane headache: a proxy towards identification of underlying mechanisms.

    Science.gov (United States)

    Bui, Sebastian Bao Dinh; Petersen, Torben; Poulsen, Jeppe Nørgaard; Gazerani, Parisa

    2017-12-01

    Airplane Headache (AH) occurs during flights and often appears as an intense, short lasting headache during take-off or landing. Reports are limited on pathological mechanisms underlying the occurrence of this headache. Proper diagnosis and treatments would benefit from identification of potential pathways involved in AH pathogenesis. This study aimed at providing a simulated airplane headache condition as a proxy towards identification of its underlying mechanisms. Fourteen participants including 7 volunteers suffering from AH and 7 healthy matched controls were recruited after meeting the diagnostic and safety criteria based on an approved study protocol. Simulation of AH was achieved by entering a pressure chamber with similar characteristics of an airplane flight. Selected potential biomarkers including salivary prostaglandin E 2 (PGE 2 ), cortisol, facial thermo-images, blood pressure, pulse, and saturation pulse oxygen (SPO) were defined and values were collected before, during and after flight simulation in the pressure chamber. Salivary samples were analyzed with ELISA techniques, while data analysis and statistical tests were handled with SPSS version 22.0. All participants in the AH-group experienced a headache attack similar to AH experience during flight. The non-AH-group did not experience any headaches. Our data showed that the values for PGE 2 , cortisol and SPO were significantly different in the AH-group in comparison with the non-AH-group during the flight simulation in the pressure chamber. The pressure chamber proved useful not only to provoke AH-like attack but also to study potential biomarkers for AH in this study. PGE 2 , and cortisol levels together with SPO presented dysregulation during the simulated AH-attack in affected individuals compared with healthy controls. Based on these findings we propose to use pressure chamber as a model to induce AH, and thus assess new potential biomarkers for AH in future studies.

  19. Performance Comparison of the Optimized Inverted Joined Wing Airplane Concept and Classical Configuration Airplanes

    OpenAIRE

    Sieradzki Adam; Dziubiński Adam; Galiński Cezary

    2016-01-01

    The joined wing concept is an unconventional airplane configuration, known since the mid-twenties of the last century. It has several possible advantages, like reduction of the induced drag and weight due to the closed wing concept. The inverted joined wing variant is its rarely considered version, with the front wing being situated above the aft wing. The following paper presents a performance prediction of the recently optimized configuration of this airplane. Flight characteristics obtaine...

  20. 76 FR 31223 - Special Conditions: Bombardier Model BD-700-1A10 and BD-700-1A11 Airplanes, Head-up Display (HUD...

    Science.gov (United States)

    2011-05-31

    .... Per Type Certificate Data Sheet (TCDS) T00003NY, those aircraft models are known under the marketing...., conformal) to the external scene. In addition, the SVS image and the HUD symbols--when considered singly or... external scene. In such cases, these symbols may be displayed but with an altered appearance that makes the...