Sample records for a300 series airplanes
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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2011-08-05
... Airworthiness Directives; Airbus Model A300 B4-600, A300 B4-600R, and A300 F4-600R Series Airplanes, and Model..., B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes; and Model A310-203, -204, -221, -222...
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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...
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2011-05-04
... Airworthiness Directives; Airbus Model A300 B4-600, A300 B4-600R, and A300 F4-600R Series Airplanes, and Model...-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes; and Model A310-203, -204, -221, -222...
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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...
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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...
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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...
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78 FR 70207 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 37797 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 9787 - Airworthiness Directives; Airbus Airplanes
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
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78 FR 28159 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 27015 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 24137 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 65187 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 78694 - Airworthiness Directives; Airbus Airplanes
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
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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...
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78 FR 31386 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 76228 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 47537 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 46543 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 64701 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 78294 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 70003 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 17071 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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78 FR 53640 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 40485 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 65799 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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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...
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78 FR 68347 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 52405 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 21227 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 9581 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 15874 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 40069 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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77 FR 16430 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 79292 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 75825 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 60798 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 19071 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 65812 - Airworthiness Directives; Airbus Airplanes
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...
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RESULTS OF AIRPLANE TU-204-300 OPERATED BY "VLADIVOSTOK AVIA" COMPANY FUEL FLOW MONITIRING
Directory of Open Access Journals (Sweden)
G. E. Maslennikova
2014-01-01
Full Text Available This article describes the results obtained from continuous monitoring of fuel flow on the airplanes Tu-204-300, operated by the aircompany "Vladivostok Avia". The reasons for the change in the cost of each copy of airplane and changes in fuel characteristics due to pilots manner of flying.
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78 FR 66861 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 32347 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 47549 - Airworthiness Directives; The Boeing Company Airplanes
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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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78 FR 23110 - Airworthiness Directives; The Boeing Company Airplanes
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...
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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...
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78 FR 78285 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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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...
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78 FR 46306 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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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...
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78 FR 78705 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes
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...
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76 FR 61555 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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2011-11-28
... Model 737-100, -200, -300, -400, and -500 series airplanes, a one-time detailed inspection is added to... Information Initial Compliance Time (i) For all Model 737-100, -200, -200C, -300, -400, and -500 series... by paragraph (r) of this AD. If any fastener is missing, before further flight, repair using a method...
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78 FR 28152 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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Mainardi, F; Lisotto, C; Maggioni, F; Zanchin, G
2012-06-01
The 'headache attributed to airplane travel', also named 'airplane headache' (AH), is a recently described headache disorder that appears exclusively in relation to airplane flights, in particular during the landing phase. Based on the stereotypical nature of the attacks in all reported cases, we proposed provisional diagnostic criteria for AH in a previously published paper. Up to now 37 cases have been described in the literature. After our paper was disseminated via the Internet, we received several email messages from subjects around the world who had experienced such a peculiar headache. Their cooperation, by completing a structured questionnaire and allowing the direct observation of three subjects, enabled us to carry out a study on a total of 75 patients suffering from AH. Our survey confirmed the stereotypical nature of the attacks, in particular with regard to the short duration of the pain (lasting less than 30 minutes in up to 95% of the cases), the clear relationship with the landing phase, the unilateral pain, the male preponderance, and the absence of accompanying signs and/or symptoms. It is conceivable to consider barotrauma as one of the main mechanisms involved in the pathophysiology of AH. The observation that the pain appears inconstantly in the majority of cases, without any evident disorder affecting the paranasal sinuses, could be consistent with a multimodal pathogenesis underlying this condition, possibly resulting in the interaction between anatomic, environmental and temporary concurrent factors. This is by far the largest AH case series ever reported in the literature. The diagnostic criteria that we previously proposed proved to be valid when applied to a large number of patients suffering from this condition. We support its recognition as a new form of headache, to be included in the forthcoming update of the International Headache Society Classification, within '10. Headache attributed to disorder of homoeostasis'. Its formal
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77 FR 75833 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 77611 - Special Conditions: Airbus, A350-900 Series Airplane; High Speed Protection System
2013-12-24
... initiated three seconds after operation of the high speed warning system by application of a load of 1.5g (0...-1001; Notice No. 25-13-35-SC] Special Conditions: Airbus, A350-900 Series Airplane; High Speed...-speed protection system. The applicable airworthiness regulations do not contain adequate or appropriate...
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77 FR 26937 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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78 FR 71992 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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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...
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77 FR 51717 - Airworthiness Directives; Airbus Airplanes
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...
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2012-12-19
...-1207; Notice No. 25-12-09-SC] Special Conditions: Airbus, A350-900 Series Airplane; Flight Envelope... or unusual design features associated with flight envelope protection in icing and non- icing..., during failure conditions (which are not shown to be extremely improbable), the requirements of Title 14...
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76 FR 6584 - Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes
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...
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76 FR 36390 - Airworthiness Directives; The Boeing Company Model 747SP Series Airplanes
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...
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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...
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78 FR 69594 - Airworthiness Directives; Airbus Airplanes
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...
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75 FR 8551 - Airworthiness Directives; Airbus Model A300, A300-600, and A310 Airplanes
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...
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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...
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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...
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77 FR 57529 - Airworthiness Directives; The Boeing Company Airplanes
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...
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77 FR 57541 - Airworthiness Directives; The Boeing Company Airplanes
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...
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77 FR 57536 - Airworthiness Directives; The Boeing Company Airplanes
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...
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77 FR 57539 - Airworthiness Directives; The Boeing Company Airplanes
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...
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2011-05-13
... Jersey Avenue, SE., Washington, DC. FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer... the required inspections that will ensure the continued damage tolerance of the affected structure... corroded structure detected during any inspection done in accordance with the Airbus A300 Airworthiness...
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78 FR 49915 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 65173 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 8054 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 40074 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 40057 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 32345 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 79333 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 46536 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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78 FR 51058 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 7523 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 21230 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 54377 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 64162 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 19065 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 19059 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 60667 - Airworthiness Directives; Airbus Airplanes
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...
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14 CFR 26.39 - Newly produced airplanes: Fuel tank flammability.
2010-01-01
... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Newly produced airplanes: Fuel tank... Tank Flammability § 26.39 Newly produced airplanes: Fuel tank flammability. (a) Applicability: This... Series 767 Series (b) Any fuel tank meeting all of the criteria stated in paragraphs (b)(1), (b)(2) and...
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78 FR 19085 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 57003 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 37437 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 70851 - Airworthiness Directives; The Boeing Company Airplanes
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...
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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...
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76 FR 27227 - Airworthiness Directives; Airbus Model A310 Series Airplanes
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...
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78 FR 25902 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 29666 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 51729 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 11793 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 61548 - Airworthiness Directives; The Boeing Company Airplanes
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...
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76 FR 69168 - Airworthiness Directives; Airbus Airplanes
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...
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76 FR 62673 - Airworthiness Directives; Airbus Airplanes
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...
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76 FR 68671 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 73343 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 59149 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 58785 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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Measured Engine Installation Effects of Four Civil Transport Airplanes
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.
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77 FR 50644 - Airworthiness Directives; Cessna Airplane Company Airplanes
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...
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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...
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77 FR 73340 - Airworthiness Directives; Airbus Airplanes
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...
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Planetary Airplane Extraction System Development and Subscale Testing
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.
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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...
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14 CFR 36.7 - Acoustical change: Transport category large airplanes and jet airplanes.
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...
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ON MODERN APPROACH TO AIRPLANE-TYPE UNMANNED AERIAL VEHICLES DESIGN WITH SHORT TAKEOFF AND LANDING
Directory of Open Access Journals (Sweden)
Oleg P. Minin
2017-11-01
Full Text Available This publication opens a series of review papers devoted to the current design problems of the next generation unmanned airplanes that are expected to appear in the period from 2025 to 2035. The series of papers considers airplanes with vertical take-off and landing, air launch of small satellites into the orbit, cargo transportation tasks, issues related to new aerodynamic forms, as well as hybrid, combined and distributed power units. The first paper of the cycle is devoted to the conceptual aerodynamic design of the airplanes with a short take-off and landing, and with technical and economic characteristics on cruise flight conditions no worse than for traditional airplane based on aerodrome with long airstrip. We consider traditional linear methods for aerodynamic scheme analysis and weight analysis, as well. The main relationships and references to the works enabling the parametric analysis of the aerodynamic configuration are given. It is concluded that one of the most promising areas in the field of airplanes with a short take-off and landing is the development of aerodynamic circuits constructed as a "flying wing" of small aspect ratio and large structural height.
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ON MODERN APPROACH TO AIRPLANE-TYPE UNMANNED AERIAL VEHICLES DESIGN WITH SHORT TAKEOFF AND LANDING
Oleg P. Minin
2017-01-01
This publication opens a series of review papers devoted to the current design problems of the next generation unmanned airplanes that are expected to appear in the period from 2025 to 2035. The series of papers considers airplanes with vertical take-off and landing, air launch of small satellites into the orbit, cargo transportation tasks, issues related to new aerodynamic forms, as well as hybrid, combined and distributed power units. The first paper of the cycle is devoted to the conceptua...
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Sensor equipment of the German earth scientific airplane program
Seige, P.
1975-01-01
The German airplane program for earth scientific research supports the work of a vast staff of earth scientists from universities and federal agencies. Due to their fields of interest, which are in oceanography, hydrology, geology, ecology, and forestry, five test areas were selected which are spread all over Germany. The sensor package, which was designed in accordance with the requirements of this group of scientists, will be installed in a DO 28 D2 type airplane. The sensor equipment consists of a series of 70-mm cameras having different film/filter combinations, a photogrammetric camera, an infrared radiometer, an 11-channel multispectral line scanner, a LANDSAT-compatible radiometer, and a complex avionic system. Along with the airplane, a truck will be equipped with a set of radiometers and other sensor devices for extensive ground-truth measurement; this also includes a cherry picker.
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77 FR 36211 - Airworthiness Directives; Airbus Airplanes
2012-06-18
... A310-204 and -304 airplanes, powered by General Electric (GE) CF6-80C2 series engines. This proposed AD was prompted by reports of two single-engine flame-out events during inclement weather. This proposed AD would require installing a shunt of the rotary selector (introducing an auto-relight function). We...
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75 FR 52246 - Airworthiness Directives; Airbus Model A318, A319, A320, and A321 Series Airplanes
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...
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Kohlman, D. L.; Hammer, J.
1985-01-01
Developments in aerodyamic, structural and propulsion technologies which influence the potential for significant improvements in performance and fuel efficiency of general aviation business airplanes are discussed. The advancements include such technolgies as natural laminar flow, composite materials, and advanced intermittent combustion engines. The design goal for this parameter design study is a range of 1300 nm at 300 knots true airspeed with a payload of 1200lbs at 35,000 ft cruise altitude. The individual and synergistic effects of various advanced technologies on the optimization of this class of high performance, single engine, propeller driven business airplanes are identified.
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Simulation of Dynamics of a Flexible Miniature Airplane
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.
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Hansen, James R. (Editor); Taylor, D. Bryan; Kinney, Jeremy; Lee, J. Lawrence
2003-01-01
This first volume, plus the succeeding five now in preparation, covers the impact of aerodynamic development on the evolution of the airplane in America. As the six-volume series will ultimately demonstrate, just as the airplane is a defining technology of the twentieth century, aerodynamics has been the defining element of the airplane. Volumes two through six will proceed in roughly chronological order, covering such developments as the biplane, the advent of commercial airliners, flying boats, rotary aircraft, supersonic flight, and hypersonic flight. This series is designed as an aeronautics companion to the Exploring the Unknown: Selected Documents in the History of the U.S. Civil Space Program (NASA SP-4407) series of books. As with Exploring the Unknown, the documents collected during this research project were assembled from a diverse number of public and private sources. A major repository of primary source materials relative to the history of the civil space program is the NASA Historical Reference Collection in the NASA Headquarters History Office. Historical materials housed at NASA field centers, academic institutions, and Presidential libraries were other sources of documents considered for inclusion, as were papers in the archives of private individuals and corporations.
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2011-10-12
..., January 18, 2011) as follows: ``Figure 1 of the Accomplishment Instructions of Boeing Special Attention... Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle... Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue, SE., Washington, DC 20590...
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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.
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2013-12-20
... airplane flight conditions following an in-flight occurrence and that are included in the flight manual (e... CFR part 25 regardless of calculated system reliability. Where analysis shows the probability of these... below the level required by part 25 or significantly reduce the reliability of the remaining system. As...
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Rapid Airplane Parametric Input Design(RAPID)
Smith, Robert E.; Bloor, Malcolm I. G.; Wilson, Michael J.; Thomas, Almuttil M.
2004-01-01
An efficient methodology is presented for defining a class of airplane configurations. Inclusive in this definition are surface grids, volume grids, and grid sensitivity. A small set of design parameters and grid control parameters govern the process. The general airplane configuration has wing, fuselage, vertical tail, horizontal tail, and canard components. The wing, tail, and canard components are manifested by solving a fourth-order partial differential equation subject to Dirichlet and Neumann boundary conditions. The design variables are incorporated into the boundary conditions, and the solution is expressed as a Fourier series. The fuselage has circular cross section, and the radius is an algebraic function of four design parameters and an independent computational variable. Volume grids are obtained through an application of the Control Point Form method. Grid sensitivity is obtained by applying the automatic differentiation precompiler ADIFOR to software for the grid generation. The computed surface grids, volume grids, and sensitivity derivatives are suitable for a wide range of Computational Fluid Dynamics simulation and configuration optimizations.
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77 FR 13193 - Airworthiness Directives; Bombardier, Inc. Airplanes
2012-03-06
... airplanes. This AD was prompted by reports of cracking of the DHC-8 Series 100 rudder actuator mounting... this AD to prevent loss of both rudder PCU actuators which could result in free play of the rudder...-171, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, New...
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76 FR 22828 - Airworthiness Directives; The Boeing Company Model 737-700 Series Airplanes
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...
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78 FR 73460 - Airworthiness Directives; the Boeing Company Airplanes
2013-12-06
... America Code 29, Hydraulic Power. (e) Unsafe Condition This AD was prompted by reports of turbine wheel...-400ER series airplanes. This proposed AD was prompted by reports of turbine wheel bursts in the air driven pump (ADP) turbine gearbox assembly (TGA), which resulted in the release of high energy fragments...
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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...
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2010-07-01
... summarizing each substantive verbal contact we receive about this proposed AD. Discussion The European Aviation Safety Agency (EASA), which is the Technical Agent for the Member States of the European Community... affect about 122 products of U.S. registry. We also estimate that it would take about 81 work-hours per...
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14 CFR 23.3 - Airplane categories.
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...
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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...
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14 CFR 125.93 - Airplane limitations.
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...
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The Airplane Cabin Microbiome.
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.
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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)
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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...
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Variable-Structure Control of a Model Glider Airplane
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.
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International Nuclear Information System (INIS)
Morris, J.W. Jr.; Chan, J.W.; Mei, Z.
1992-06-01
The 300-series stainless steels that are commonly specified for the structures of high field superconducting magnets are metastable austenitic alloys that undergo martensitic transformations when deformed at low temperature. The martensitic tranformation is promoted by plastic deformation and by exposure to high magnetic fields. The transformation significantly influences the mechanical properties of the alloy. The mechanisms of this influence are reviewed, with emphasis on fatigue crack growth effects and magnetomechanical phenomena that have only recently been recognized
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77 FR 69747 - Airworthiness Directives; The Boeing Company Model Airplanes
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...
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Childhood headache attributed to airplane travel: a case report.
Rogers, Kirsty; Rafiq, Nadia; Prabhakar, Prab; Ahmed, Mas
2015-05-01
Headache attributed to airplane flights is a rare form of headache disorder. This case study describes an 11-year-old girl with recurrent, severe, frontal headaches occurring during airplane travel. The episodes were associated with dizziness and facial pallor but no additional symptoms and showed spontaneous resolution on landing. Blood tests and imaging revealed no abnormalities. The present case fulfils the criteria for airplane headache recently included in the revised edition of the International Classification of Headache Disorders (ICHD-III Beta). Only a few cases of airplane headache have been reported in children. To our knowledge, this is the fourth case. We review the current literature on this rare syndrome and discuss various proposed pathophysiological mechanisms. © The Author(s) 2014.
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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.
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Radiated Emissions from a Remote-Controlled Airplane-Measured in a Reverberation Chamber
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.;
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.
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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...
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14 CFR 125.75 - Airplane flight manual.
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...
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77 FR 6023 - Airworthiness Directives; Airbus Airplanes
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...
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Air resistance measurements on actual airplane parts
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.
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2011-01-13
... the rudder. The loss of the rudder leads to degradation of the handling qualities and reduces the..., may degrade the structural integrity of the rudder. The loss of the rudder leads to degradation of the... carbon fiber reinforced plastic rudders having part numbers and serial numbers listed in Table 1 of this...
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2011-04-21
... structural integrity of the rudder. The loss of the rudder leads to degradation of the handling qualities and... degradation of the handling qualities and reduces the controllability of the aeroplane. EASA AD 2009-0156... manufacturer serial numbers; certificated in any category; equipped with carbon fiber reinforced plastic...
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[A rarely known headache: Airplane travel headache].
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.
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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.
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Recurring norovirus transmission on an airplane.
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.
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Analysis of radiation-induced microchemical evolution in 300 series stainless steel
International Nuclear Information System (INIS)
Brager, H.R.; Garner, F.A.
1980-03-01
The irradiation of 300 series stainless steel by fast neutrons leads to an evolution of alloy microstructures that involves not only the formation of voids and dislocations, but also an extensive repartitioning of elements between various phases. This latter evolution has been shown to be the primary determinant of the alloy behavior in response to the large number of variables which influence void swelling and irradiation creep. The combined use of scanning transmission electron microscopy and energy-dispersive x-ray analysis has been the key element in the study of this phenomenon. Problems associated with the analysis of radioactive specimens are resolved by minor equipment modifications. Problems associated with spatial resolution limitations and the complexity and heterogeneity of the microchemical evolution have been overcome by using several data acquisition techniques. These include the measurement of compositional profiles near sinks, the use of foil-edge analysis, and the statistical sampling of many matrix and precipitate volumes
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14 CFR 125.355 - Airplane equipment.
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...
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Flight Tests of a Ministick Controller in an F/A-18 Airplane
Stoliker, Patrick C.; Carter, John
2003-01-01
In March of 1999, five pilots performed flight tests to evaluate the handling qualities of an F/A-18 research airplane equipped with a small-displacement center stick (ministick) controller that had been developed for the JAS 39 Gripen airplane (a fighter/attack/ reconnaissance airplane used by the Swedish air force). For these tests, the ministick was installed in the aft cockpit (see figure) and production support flight control computers (PSFCCs) were used as interfaces between the controller hardware and the standard F/A-18 flight-control laws. The primary objective of the flight tests was to assess any changes in handling qualities of the F/A-18 airplane attributable to the mechanical characteristics of the ministick. The secondary objective was to demonstrate the capability of the PSFCCs to support flight-test experiments.
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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...
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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...
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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....
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Airplane Upset Training Evaluation Report
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.
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Ostroff, A. J.; Hueschen, R. M.
1984-01-01
The ability of a pilot to reconfigure the control surfaces on an airplane after a failure, allowing the airplane to recover to a safe condition, becomes more difficult with increasing airplane complexity. Techniques are needed to stabilize and control the airplane immediately after a failure, allowing the pilot more time to make longer range decisions. This paper presents a baseline design of a discrete multivariable control law using four controls for the longitudinal channel of a B-737. Non-reconfigured and reconfigured control laws are then evaluated, both analytically and by means of a digital airplane simulation, for three individual control element failures (stabilizer, elevator, spoilers). The simulation results are used to evaluate the effectiveness of the control reconfiguration on tracking ability during the approach and landing phase of flight with severe windshear and turbulence disturbing the airplane dynamics.
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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...
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78 FR 7261 - Airworthiness Directives; Airbus Airplanes
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...
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Optimal back-to-front airplane boarding
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.
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Optimal back-to-front airplane boarding.
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.
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The X-15 airplane - Lessons learned
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.
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78 FR 41280 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 42952 - Airworthiness Directives; Airbus Airplanes
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...
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76 FR 18038 - Airworthiness Directives; Airbus Model A340-200 and -300 Series Airplanes
2011-04-01
... as being a combined failure of the thrust reverser pivoting door primary lock and actuator..., this AD requires installation of a new modified primary lock and a new modified actuator on the 10... requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in...
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Design definition study of a lift/cruise fan technology V/STOL airplane: Summary
Zabinsky, J. M.; Higgins, H. C.
1975-01-01
A two-engine three-fan V/STOL airplane was designed to fulfill naval operational requirements. A multimission airplane was developed from study of specific point designs. Based on the multimission concept, airplanes were designed to demonstrate and develop the technology and operational procedures for this class of aircraft. Use of interconnected variable pitch fans led to a good balance between high thrust with responsive control and efficient thrust at cruise speeds. The airplanes and their characteristics are presented.
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76 FR 24351 - Airworthiness Directives; Airbus Model A340-200 and -300 Series Airplanes
2011-05-02
.... Register in the future. Differences Between the AD and the MCAI or Service Information We have reviewed the... described in Airbus A340 Airworthiness Limitations Items Document Ref: AI/SE-M4/95A.0051/97, Issue 10, dated...
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78 FR 52414 - Airworthiness Directives; Airbus Airplanes
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...
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14 CFR 121.141 - Airplane flight manual.
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...
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76 FR 7513 - Airworthiness Directives; The Boeing Company Model 747-400 and -400F Series Airplanes
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...
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14 CFR 125.407 - Maintenance log: Airplanes.
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...
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14 CFR 125.91 - Airplane requirements: General.
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...
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GRAPHIC-ANALYTICAL METHODS FOR CALCULATING THE GRAVITY CENTER OF A MODEL AIRPLANE
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.
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14 CFR 121.570 - Airplane evacuation capability.
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...
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Spoilers for roll control of light airplanes
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.
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14 CFR 121.605 - Airplane equipment.
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...
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Paper Airplanes: A Classroom Activity
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)
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Airplane headache: a further case report of a young man.
Domitrz, Izabela
2010-12-01
Headache with normal examinations and imaging, occurring during an airplane flight has been rarely reported. We present a young patient with a new type of headache that appeared during flights: take-off and landing of a plane and was not associated with other conditions. This airplane headache is rather rare in population and the pathophysiology of this type is not clear. Secondary causes must be ruled out before the diagnosis of a primary headache is made.
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75 FR 21528 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-90-30 Airplanes
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...
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78 FR 72834 - Airworthiness Directives; SOCATA Airplanes
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...
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14 CFR 21.5 - Airplane or Rotorcraft Flight Manual.
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...
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Perturbed Motion of Airplane and Safe Store Separation
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...
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Headache associated with airplane travel: a rare entity.
Cherian, Ajith; Mathew, Mini; Iype, Thomas; Sandeep, P; Jabeen, Afshan; Ayyappan, K
2013-01-01
Airplane travel headache is rare and has recently been described as a new form of headache associated with a specific situation. Of the 1,208 patients with primary headaches attending a tertiary care neurology hospital, two (0.16%) patients satisfied the criteria for headache related to airplane travel. Both the patients fulfilled the proposed diagnostic criteria for airplane travel headache. This unique headache had a mean duration of 24 minutes, localized to the medial supraorbital region described as having an intense jabbing or stabbing character that occurred exclusively and maximally during aircraft landing or take-off, following which pain intensity subsided . This rare headache felt on aircraft descent is probably due to the squeeze effect on the frontal sinus wall, when air trapped inside it contracts producing a negative pressure leading to mucosal edema, transudation and intense pain. Use of nasal decongestants either alone or in combination with naproxen sodium prior to ascent and descent abated the headache episodes. Awareness about this unique entity is essential to provide proper treatment and avoid patient suffering.
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14 CFR 121.303 - Airplane instruments and equipment.
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...
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Ostroff, A. J.; Hueschen, R. M.
1984-01-01
The ability of a pilot to reconfigure the control surfaces on an airplane after a failure, allowing the airplane to recover to a safe condition for landing, becomes more difficult with increasing airplane complexity. Techniques are needed to stabilize and control the airplane immediately after a failure, allowing the pilot time to make longer range decisions. This paper shows a design of a discrete multivariable control law using four controls for the longitudinal channel of a B-737. Single control element failures are allowed in three of the four controls. The four controls design and failure cases are analyzed by means of a digital airplane simulation, with regard to tracking capability and ability to overcome severe windshear and turbulence during the aproach and landing phase of flight.
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Energy Technology Data Exchange (ETDEWEB)
Silva, Maycon J.; Spinelli, Rafaela O.; Moreno, Rogerio M.B.; Mattoso, Luiz H.C.; Martins, Maria Alice, E-mail: maria-alice.martins@embrapa.br [Embrapa Instrumentacao/LNNA, Sao Carlos, SP (Brazil); Scaloppi Junior, Erivaldo J. [Instituto Agronomico (IAC), Votuporanga, SP (Brazil). Centro de Seringueira e Sistemas Agroflorestais; Goncalves, Paulo de S. [Instituto Agronomico (IAC), Campinas, SP (Brazil)
2015-07-01
The natural rubber (NR) is present in more than 2500 species of plants, being the Hevea brasiliensis the most commercially exploited. It is a raw material of great importance to the Brazilian economy, but the country faces a production's deficit, having to import about 60% of its consumption. In this work , the latex obtained from rubber tree of new clones of PB series 300 (PB 311, PB 312, PB 314 , PB 326, PB 346 and PB 350 ) and RRIM 600 (control) were characterized by dry rubber content (DRC), total solids content, distribution of particle size, Zeta potential, thermogravimetry, differential scanning calorimetry, infrared in the spectroscopy (FTIR), nuclear magnetic resonance (NMR) and technological properties. The DRC values ranged from 33% to 40%, and total solids of 38% to 44%. All of the clones showed average particle diameter between 180.0 to 192.1 nm, excluding clones PB 326 and PB 346 with 150.0 nm and 157.9 nm, respectively. The NMR spectra and FTIR showed that the structure of the natural rubber from all clones studied is cis -1,4- polyisoprene. Natural rubber from the new clones showed good thermal stability up to 285 °C and glass transition temperature of -64 °C. (author)
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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.
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14 CFR 121.1105 - Aging airplane inspections and records reviews.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Aging airplane inspections and records... Improvements § 121.1105 Aging airplane inspections and records reviews. (a) Applicability. This section applies to all airplanes operated by a certificate holder under this part, except for those airplanes...
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14 CFR 91.605 - Transport category civil airplane weight limitations.
2010-01-01
... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Transport category civil airplane weight... civil airplane weight limitations. (a) No person may take off any transport category airplane (other than a turbine-engine-powered airplane certificated after September 30, 1958) unless— (1) The takeoff...
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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...
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2011-08-24
... the compliance times specified, unless already done. Installation of New Relay and Wiring Bundle (g... certain wiring changes, installing a new relay and necessary wiring in the cabin air conditioning and... for changing the wire bundle route and wiring, installing a new relay and applicable wiring in the...
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2010-01-22
... receipt. FOR FURTHER INFORMATION CONTACT: Robert Hettman, Aerospace Engineer, Cabin Safety and... audio select panel. An electrical current went through the support structure to a flightcrew mask... specification part number Sierra engineering Spencer fluid Puritan bennett Hydraflow 60B50059-70 835-01-70 9513...
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2013-11-18
... Boeing Company applied for a change to Type Certificate No. T00001SE Rev. 30 dated June 6, 2012 for... integration may result in security vulnerabilities from intentional or unintentional corruption of data and... material did not anticipate this type of system architecture or electronic access to aircraft systems...
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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.
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14 CFR 121.161 - Airplane limitations: Type of route.
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...
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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...
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14 CFR 121.503 - Flight time limitations: Pilots: airplanes.
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...
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Assessment of community noise for a medium-range airplane with open-rotor engines
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.
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76 FR 77157 - Airworthiness Directives; The Boeing Company Airplanes
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...
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14 CFR 23.71 - Glide: Single-engine airplanes.
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...
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75 FR 26881 - Airworthiness Directives; Airbus Model A340-200 and A340-300 Series Airplanes
2010-05-13
...;Prices of new books are listed in the first FEDERAL REGISTER issue of each #0;week. #0; #0; #0; #0;#0... the incorporation by reference of a certain publication listed in this AD. We must receive comments on... the overall regulatory, economic, environmental, and energy aspects of this AD. We will consider all...
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Differential equations in airplane mechanics
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.
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14 CFR 61.159 - Aeronautical experience: Airplane category rating.
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...
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75 FR 35 - Special Conditions: Airbus Model A318-112 Airplane (S/N 3886); Certification of a Cooktop
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...
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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.
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A controls engineering approach for analyzing airplane input-output characteristics
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.
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77 FR 19067 - Airworthiness Directives; Airbus Airplanes
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...
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Headache Attributed to Airplane Travel: A Review of Literature.
Nierenburg, Hida; Jackfert, Katelin
2018-06-14
Headaches due to airplane travel are rare but documented in the literature. We aim to provide a review of diagnostic criteria and treatment for this condition. Several cases of this syndrome have been reported since it was first described in 2004. Airplane headache is classified as unilateral, stabbing, orbito-frontal pain, lasting under 30 min, and occurs during ascent or descent of a plane. Patients with this condition can develop anxiety and fear of flying given the intensity and severity of the pain. The pathophysiology of this syndrome is unknown, but theories include suspected barotrauma given changes in barometric pressure during ascent and descent. There are no randomized controlled trials regarding treatment, but case reports suggest headache prevention with pre-treatment with naproxen, decongestants, and triptans prior to air travel. Some non-pharmacological therapies reported include Valsalva maneuvers, chewing, relaxation techniques, and pressure at the pain area. As more cases of headache attributed to airplane travel are reported, epidemiological data can be obtained to further understand the incidence and prevalence of this condition, which can lead to improved treatment options for patients.
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Headache during airplane travel ("airplane headache"): first case in Greece.
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.
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Fuzzy Logic Decoupled Lateral Control for General Aviation Airplanes
Duerksen, Noel
1997-01-01
It has been hypothesized that a human pilot uses the same set of generic skills to control a wide variety of aircraft. If this is true, then it should be possible to construct an electronic controller which embodies this generic skill set such that it can successfully control different airplanes without being matched to a specific airplane. In an attempt to create such a system, a fuzzy logic controller was devised to control aileron or roll spoiler position. This controller was used to control bank angle for both a piston powered single engine aileron equipped airplane simulation and a business jet simulation which used spoilers for primary roll control. Overspeed, stall and overbank protection were incorporated in the form of expert systems supervisors and weighted fuzzy rules. It was found that by using the artificial intelligence techniques of fuzzy logic and expert systems, a generic lateral controller could be successfully used on two general aviation aircraft types that have very different characteristics. These controllers worked for both airplanes over their entire flight envelopes. The controllers for both airplanes were identical except for airplane specific limits (maximum allowable airspeed, throttle ]ever travel, etc.). This research validated the fact that the same fuzzy logic based controller can control two very different general aviation airplanes. It also developed the basic controller architecture and specific control parameters required for such a general controller.
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76 FR 50405 - Airworthiness Directives; SOCATA Airplanes
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...
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Flying spin qualities testing of airplane
Directory of Open Access Journals (Sweden)
Kostić Čedomir J.
2015-01-01
Full Text Available In this paper is presented the theoretical analysis of origins and characteristics of spinning motion. There are precise explanation of every stage spin flight and basic meaning of notion. Personated equation of motion in spin and equitation of motion airplane in settled spin motion, analysis of them and general recommendation for pilots for recovering from spins. Introduced in valid military and civil specifications flight test demonstration requirements for departure resistance and flying stall and spin qualities testing of airplane. Special attention was given on predicting departure, stall and spin susceptibility and theoretical analysis in the name of magnify flight testing security. There are explanation of test equipment and methodology of flying qualities testing of airplanes. Like a support of this theme are described method and results of flight stall and spin qualities testing of airplane G-4(N-62 super see-gull with precise recommendation for pilots for recovering from spins, from TOC SLI VS (Technical testing center, department for fight testing Air Force of Serbia.
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77 FR 65808 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 68352 - Airworthiness Directives; Airbus Airplanes
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...
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2011-04-21
... information management system 2 (AIMS-2) software in the AIMS-2 hardware; and making certain wiring changes... wiring changes. Comments We gave the public the opportunity to participate in developing this AD. The... Installation JAL requested that we delay the issuance of this AD until GE Aviation publishes new revisions to...
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76 FR 70042 - Airworthiness Directives; Pacific Aerospace Limited Airplanes
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...
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78 FR 14647 - Airworthiness Directives; Airbus Airplanes
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...
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Modeling of terminal-area airplane fuel consumption
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 ...
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76 FR 3854 - Airworthiness Directives; REIMS AVIATION S.A. Model F406 Airplanes
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...
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78 FR 64156 - Airworthiness Directives; Airbus Airplanes
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...
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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.)
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78 FR 71996 - Airworthiness Directives; Airbus Airplanes
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...
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14 CFR 129.25 - Airplane security.
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...
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Error Analysis of Determining Airplane Location by Global Positioning System
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.
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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.
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Performance of a Fuel-Cell-Powered, Small Electric Airplane Assessed
Berton, Jeffrey J.
2004-01-01
Rapidly emerging fuel-cell-power technologies may be used to launch a new revolution of electric propulsion systems for light aircraft. Future small electric airplanes using fuel cell technologies hold the promise of high reliability, low maintenance, low noise, and - with the exception of water vapor - zero emissions. An analytical feasibility and performance assessment was conducted by NASA Glenn Research Center's Airbreathing Systems Analysis Office of a fuel-cell-powered, propeller-driven, small electric airplane based on a model of the MCR-01 two-place kitplane (Dyn'Aero, Darois, France). This assessment was conducted in parallel with an ongoing effort by the Advanced Technology Products Corporation and the Foundation for Advancing Science and Technology Education. Their project - partially funded by a NASA grant - is to design, build, and fly the first manned, continuously propelled, nongliding electric airplane. In our study, an analytical performance model of a proton exchange membrane (PEM) fuel cell propulsion system was developed and applied to a notional, two-place light airplane modeled after the MCR-01 kitplane. The PEM fuel cell stack was fed pure hydrogen fuel and humidified ambient air via a small automotive centrifugal supercharger. The fuel cell performance models were based on chemical reaction analyses calibrated with published data from the fledgling U.S. automotive fuel cell industry. Electric propeller motors, rated at two shaft power levels in separate assessments, were used to directly drive a two-bladed, variable-pitch propeller. Fuel sources considered were compressed hydrogen gas and cryogenic liquid hydrogen. Both of these fuel sources provided pure, contaminant-free hydrogen for the PEM cells.
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Structural concepts and experimental considerations for a versatile high-speed research airplane
Jackson, L. R.; Kirkham, F. S.; Weidner, J. P.
1978-01-01
Future aircraft may be hydrogen fueled and fly at hypersonic speeds. The resulting environments will require new structural concepts to satisfy performance goals. Large representative structures will have to be flight tested prior to commitment to a costly vehicle fleet. To perform flight tests, a versatile, economical, high-speed research airplane is defined. Results of this study including experimental considerations for a hypersonic research airplane are reported.
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A pilot's opinion of the F-8 digital fly-by-wire airplane
Krier, G. E.
1976-01-01
The handling qualities of the F-8 digital fly by wire airplane are evaluated by using the Cooper-Harper rating scale. The reasons for the ratings are given, as well as a short description of the flying tasks. It was concluded that the handling qualities of the airplane were good in most situations, although occasional ratings of unsatisfactory were given.
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14 CFR 135.397 - Small transport category airplane performance operating limitations.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small transport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.397 Small transport category airplane performance operating limitations. (a) No person may operate a reciprocating engine...
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78 FR 23866 - Airworthiness Directives; the Boeing Company
2013-04-23
...-200 and -300 series airplanes. The proposed AD would have required installing new operational software in the cabin management system, and loading new software into the mass memory card. Since the...., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Ray Mei, Aerospace Engineer, Systems and Equipment...
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Follow-On Studies for Design Definition of a Lift/Cruise Fan Technology V/STOL Airplane, Volume 1
1977-01-01
A three engine, three fan V/STOL airplane was designed for use as a Research Technology Airplane in proof-of-concept of a candidate configuration for use as a Navy multimission airplane. Use of mechanically interconnected variable pitch fans is made to accommodate power transfer for flight control in hover and to provide flight capability in the event of a single engine failure. The airplane is a modification of a T-39A transport. Design definition is provided for high risk propulsion components and a development test program is defined.
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2012-03-30
... emergency evacuation, which could result in inadequate buoyancy to support the raft's passenger capacity... DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2011... approved under TSO TSO-C69b and installed on Model A330-200 and -300 series airplanes, Model A340-200 and...
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14 CFR 135.399 - Small nontransport category airplane performance operating limitations.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Small nontransport category airplane... PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations § 135.399 Small nontransport category airplane performance operating limitations. (a) No person may operate a reciprocating engine or...
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Prospect of atomic airplane and mini-reactor
International Nuclear Information System (INIS)
Shi Lei; Li Jinying; Ji Cunxing; Ma Huirou; Hou Yanli; Duan Zhihui
2012-01-01
History of R and D of atomic airplane was reviewed. inclusive of problem and actuality, principle and attaching. Prospect of R and D of atomic airplane in China is described extensively. Some suggestions to the government and establishments were made as well. (authors)
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76 FR 50706 - Airworthiness Directives; SOCATA Airplanes
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...
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76 FR 67341 - Airworthiness Directives; SOCATA Airplanes
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...
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14 CFR Appendix D to Part 125 - Airplane Flight Recorder Specification
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD... Appendix D to Part 125—Airplane Flight Recorder Specification Parameters Range Accuracy sensor input to...
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14 CFR 125.175 - Protection of other airplane components against fire.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components... CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD... Requirements § 125.175 Protection of other airplane components against fire. (a) Except as provided in...
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14 CFR 135.393 - Large nontransport category airplanes: Landing limitations: Destination airports.
2010-01-01
... category airplane may take off that airplane at a weight that— (1) Allowing for anticipated consumption of... assumed that— (1) The airplane passes directly over the intersection of the obstruction clearance plane...
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14 CFR 125.375 - Fuel supply: Nonturbine and turbopropeller-powered airplanes.
2010-01-01
...) Thereafter, to fly for 45 minutes at normal crusing fuel consumption. (b) If the airplane is released for any...-powered airplanes. 125.375 Section 125.375 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... AND OPERATIONS CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE...
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14 CFR Appendix E to Part 125 - Airplane Flight Recorder Specifications
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications E... AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR MORE PASSENGERS OR A MAXIMUM PAYLOAD... Appendix E to Part 125—Airplane Flight Recorder Specifications The recorded values must meet the designated...
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Lateral-directional aerodynamic characteristics of light, twin-engine, propeller driven airplanes
Wolowicz, C. H.; Yancey, R. B.
1972-01-01
Analytical procedures and design data for predicting the lateral-directional static and dynamic stability and control characteristics of light, twin engine, propeller driven airplanes for propeller-off and power-on conditions are reported. Although the consideration of power effects is limited to twin engine airplanes, the propeller-off considerations are applicable to single engine airplanes as well. The procedures are applied to a twin engine, propeller driven, semi-low-wing airplane in the clean configuration through the linear lift range. The calculated derivative characteristics are compared with wind tunnel and flight data. Included in the calculated characteristics are the spiral mode, roll mode, and Dutch roll mode over the speed range of the airplane.
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A Software Defined Radio Based Airplane Communication Navigation Simulation System
He, L.; Zhong, H. T.; Song, D.
2018-01-01
Radio communication and navigation system plays important role in ensuring the safety of civil airplane in flight. Function and performance should be tested before these systems are installed on-board. Conventionally, a set of transmitter and receiver are needed for each system, thus all the equipment occupy a lot of space and are high cost. In this paper, software defined radio technology is applied to design a common hardware communication and navigation ground simulation system, which can host multiple airplane systems with different operating frequency, such as HF, VHF, VOR, ILS, ADF, etc. We use a broadband analog frontend hardware platform, universal software radio peripheral (USRP), to transmit/receive signal of different frequency band. Software is compiled by LabVIEW on computer, which interfaces with USRP through Ethernet, and is responsible for communication and navigation signal processing and system control. An integrated testing system is established to perform functional test and performance verification of the simulation signal, which demonstrate the feasibility of our design. The system is a low-cost and common hardware platform for multiple airplane systems, which provide helpful reference for integrated avionics design.
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International Nuclear Information System (INIS)
Helm, F.
1978-08-01
In a series of critical assembles in SNEAK physics parameters of interest for the prototype fast reactor SNR-300 were investigated and compared to the results of calculations. Since a complete mock-up of the SNR-300 was not possible with the material supply available the measurements were performed in three different assemblies, each being adapted to the investigation of a particular set of problems. Work was concentrated on the following quantities: criticality, breeding ratio, Na-void effect, control rod worths and power distribution. The calculation were performed using the diffusion and transport methods available at KFK and as a data basis the KFKINER cross section set. Detailed descriptions of the assemblies, the majority of the results and extensive discussions of the experimental and calculational methods used can be found in separate KFK reports about each assembly which were already published. This report contains a summary of the results for each quantity investigated including a basic account of the methods used, and an evaluation of the significance of these data for the prediction of parameters of the SNR-300. (orig.) 891 RW [de
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A Hardware-in-the-Loop Simulator for Software Development for a Mars Airplane
Slagowski, Stefan E.; Vican, Justin E.; Kenney, P. Sean
2007-01-01
Draper Laboratory recently developed a Hardware-In-The-Loop Simulator (HILSIM) to provide a simulation of the Aerial Regional-scale Environmental Survey (ARES) airplane executing a mission in the Martian environment. The HILSIM was used to support risk mitigation activities under the Planetary Airplane Risk Reduction (PARR) program. PARR supported NASA Langley Research Center's (LaRC) ARES proposal efforts for the Mars Scout 2011 opportunity. The HILSIM software was a successful integration of two simulation frameworks, Draper's CSIM and NASA LaRC's Langley Standard Real-Time Simulation in C++ (LaSRS++).
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14 CFR 121.277 - Protection of other airplane components against fire.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Protection of other airplane components....277 Protection of other airplane components against fire. (a) Except as provided in paragraph (b) of this section, all airplane surfaces aft of the nacelles in the area of one nacelle diameter on both...
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14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.
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...
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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.
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77 FR 47277 - Airworthiness Directives; Bombardier, Inc. Airplanes
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...
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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
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Advances in Thrust-Based Emergency Control of an Airplane
Creech, Gray; Burken, John J.; Burcham, Bill
2003-01-01
Engineers at NASA's Dryden Flight Research Center have received a patent on an emergency flight-control method implemented by a propulsion-controlled aircraft (PCA) system. Utilizing the preexisting auto-throttle and engine-pressure-ratio trim controls of the airplane, the PCA system provides pitch and roll control for landing an airplane safely without using aerodynamic control surfaces that have ceased to function because of a primary-flight-control-system failure. The installation of the PCA does not entail any changes in pre-existing engine hardware or software. [Aspects of the method and system at previous stages of development were reported in Thrust-Control System for Emergency Control of an Airplane (DRC-96-07), NASA Tech Briefs, Vol. 25, No. 3 (March 2001), page 68 and Emergency Landing Using Thrust Control and Shift of Weight (DRC-96-55), NASA Tech Briefs, Vol. 26, No. 5 (May 2002), page 58.]. Aircraft flight-control systems are designed with extensive redundancy to ensure low probabilities of failure. During recent years, however, several airplanes have exhibited major flight-control-system failures, leaving engine thrust as the last mode of flight control. In some of these emergency situations, engine thrusts were successfully modulated by the pilots to maintain flight paths or pitch angles, but in other situations, lateral control was also needed. In the majority of such control-system failures, crashes resulted and over 1,200 people died. The challenge lay in creating a means of sufficient degree of thrust-modulation control to safely fly and land a stricken airplane. A thrust-modulation control system designed for this purpose was flight-tested in a PCA an MD-11 airplane. The results of the flight test showed that without any operational control surfaces, a pilot can land a crippled airplane (U.S. Patent 5,330,131). The installation of the original PCA system entailed modifications not only of the flight-control computer (FCC) of the airplane but
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Simple Electromagnetic Modeling of Small Airplanes: Neural Network Approach
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...
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14 CFR 121.412 - Qualifications: Flight instructors (airplane) and flight instructors (simulator).
2010-01-01
... (airplane) and flight instructors (simulator). 121.412 Section 121.412 Aeronautics and Space FEDERAL... OPERATIONS Training Program § 121.412 Qualifications: Flight instructors (airplane) and flight instructors (simulator). (a) For the purposes of this section and § 121.414: (1) A flight instructor (airplane) is a...
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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)
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Reversible cerebral vasoconstriction syndrome precipitated by airplane descent: Case report.
Hiraga, Akiyuki; Aotsuka, Yuya; Koide, Kyosuke; Kuwabara, Satoshi
2017-10-01
Background Reversible cerebral vasoconstriction syndrome (RCVS) is characterized by segmental vasospasm. Vasoactive agents and childbirth have been reported as precipitating factors for RCVS; however, RCVS induced by altitude change or air travel has rarely been reported. Case We present a case of a 74-year-old woman who presented with thunderclap headache during airplane descent. Magnetic resonance angiography demonstrated segmental vasoconstriction that improved 9 days after onset. Conclusion These findings indicate that airplane descent may be a trigger of RCVS. The time course of headache in the present case was similar to that of prolonged headache attributed to airplane travel, indicating that RCVS during air travel may have previously been overlooked and that some headache attributed to airplane travel cases may represent a milder form of RCVS.
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2011-01-25
... after receipt. FOR FURTHER INFORMATION CONTACT: Dan Rodina, Aerospace Engineer, International Branch... ensure the continued damage tolerance of the affected structure. The FAA has provided guidance for this... after April 3, 2007. Corrective Actions (j) Damaged, cracked, or corroded structure detected during any...
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Airplane detection in remote sensing images using convolutional neural networks
Ouyang, Chao; Chen, Zhong; Zhang, Feng; Zhang, Yifei
2018-03-01
Airplane detection in remote sensing images remains a challenging problem and has also been taking a great interest to researchers. In this paper we propose an effective method to detect airplanes in remote sensing images using convolutional neural networks. Deep learning methods show greater advantages than the traditional methods with the rise of deep neural networks in target detection, and we give an explanation why this happens. To improve the performance on detection of airplane, we combine a region proposal algorithm with convolutional neural networks. And in the training phase, we divide the background into multi classes rather than one class, which can reduce false alarms. Our experimental results show that the proposed method is effective and robust in detecting airplane.
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14 CFR Appendix M to Part 121 - Airplane Flight Recorder Specifications
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications M... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Pt. 121, App. M Appendix M to Part 121—Airplane... airplanes operated under § 121.344(f) 0.5° A sampling rate of 0.25 is recommended. 7. Roll attitude 2 ±180...
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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...
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The Airplane as an Open-Source Invention
Peter B. Meyer
2013-01-01
Airplanes were invented after decades of experimentation in many countries through a process we can call open-source innovation. Experimenters, inventors, and writers contributed to the airplane’s development by sharing information in publications, in clubs, by writing letters and by visiting. The hundreds of aeronautical patents before 1900 were treated like publications, not like claims to intellectual property. Inventors of modern airplanes copied earlier designs, analogously to advances i...
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Three Cases of Spine Fractures after an Airplane Crash.
Lee, Han Joo; Moon, Bong Ju; Pennant, William A; Shin, Dong Ah; Kim, Keung Nyun; Yoon, Do Heum; Ha, Yoon
2015-10-01
While injuries to the spine after an airplane crash are not rare, most crashes result in fatal injuries. As such, few studies exist that reported on spine fractures sustained during airplane accidents. In this report, we demonstrate three cases of spine fractures due to crash landing of a commercial airplane. Three passengers perished from injuries after the crash landing, yet most of the passengers and crew on board survived, with injuries ranging from minor to severe. Through evaluating our three spine fracture patients, it was determined that compression fracture of the spine was the primary injury related to the airplane accident. The first patient was a 20-year-old female who sustained a T6-8 compression fracture without neurologic deterioration. The second patient was a 33-year-old female with an L2 compression fracture, and the last patient was a 49-year-old male patient with a T8 compression fracture. All three patients were managed conservatively and required spinal orthotics. During the crash, each of these patients were subjected to direct, downward high gravity z-axis (Gz) force, which gave rise to load on the spine vertically, thereby causing compression fracture. Therefore, new safety methods should be developed to prevent excessive Gz force during airplane crash landings.
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Three Cases of Spine Fractures after an Airplane Crash
Lee, Han Joo; Moon, Bong Ju; Pennant, William A.; Shin, Dong Ah; Kim, Keung Nyun; Yoon, Do Heum
2015-01-01
While injuries to the spine after an airplane crash are not rare, most crashes result in fatal injuries. As such, few studies exist that reported on spine fractures sustained during airplane accidents. In this report, we demonstrate three cases of spine fractures due to crash landing of a commercial airplane. Three passengers perished from injuries after the crash landing, yet most of the passengers and crew on board survived, with injuries ranging from minor to severe. Through evaluating our three spine fracture patients, it was determined that compression fracture of the spine was the primary injury related to the airplane accident. The first patient was a 20-year-old female who sustained a T6-8 compression fracture without neurologic deterioration. The second patient was a 33-year-old female with an L2 compression fracture, and the last patient was a 49-year-old male patient with a T8 compression fracture. All three patients were managed conservatively and required spinal orthotics. During the crash, each of these patients were subjected to direct, downward high gravity z-axis (Gz) force, which gave rise to load on the spine vertically, thereby causing compression fracture. Therefore, new safety methods should be developed to prevent excessive Gz force during airplane crash landings. PMID:27169094
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The Bristol "Badminton" Airplane
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.
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Effect of airplane transport of donor livers on post-liver transplantation survival.
Huang, Yi; MacQuillan, Gerry; Adams, Leon A; Garas, George; Collins, Megan; Nwaba, Albert; Mou, Linjun; Bulsara, Max K; Delriviere, Luc; Jeffrey, Gary P
2016-11-07
To evaluate the effect of long haul airplane transport of donor livers on post-transplant outcomes. A retrospective cohort study of patients who received a liver transplantation was performed in Perth, Australia from 1992 to 2012. Donor and recipient characteristics information were extracted from Western Australian liver transplantation service database. Patients were followed up for a mean of six years. Patient and graft survival were evaluated and compared between patients who received a local donor liver and those who received an airplane transported donor liver. Predictors of survival were determined by univariate and multivariate analysis using cox regression. One hundred and ninety-three patients received a local donor liver and 93 patients received an airplane transported donor liver. Airplane transported livers had a significantly lower alanine transaminase (mean: 45 U/L vs 84 U/L, P = 0.035), higher donor risk index (mean: 1.88 vs 1.42, P airplane transport retained significance for graft loss (HR = 1.92, 95%CI: 1.16-3.17). One year graft survival was 0.88 for those with a local liver and was 0.71 for those with an airplane transported liver. One year graft loss was due to primary graft non-function or associated with preservation injury in 20.8% of recipients of an airplane transported liver compared with 4.6% in those with a local liver ( P = 0.027). Airplane transport of donor livers was independently associated with reduced graft survival following liver transplantation.
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78 FR 42720 - Airworthiness Directives; The Boeing Company Airplanes
2013-07-17
... airplane reaching its limit of validity (LOV) of the engineering data that support the established... receipt. FOR FURTHER INFORMATION CONTACT: Chandraduth Ramdoss, Aerospace Engineer, Airframe Branch, ANM... airplane structure. The last element of those initiatives is the requirement to establish a limit of...
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International Nuclear Information System (INIS)
Bjarnov, E.; Munk, J.; Nielsen, O.J.; Pagsberg, P.; Sillesen, A.
1982-04-01
Gas phase reactions of hydroxyl radicals with ethane and a series of Cl- and F-substituted methanes were studied at atmospheric pressure and over the temperature range 300-400degK. Hydroxyl radicals were produced by pulse radiolysis of water vapour and the decay rate was studied by monitoring the transient light absorption at 3090 A. Arrhenius parameters (A,Esub(a)) for the reaction RH + OH arrow R + HOH were obtained for the reactants RH = C 2 H 6 ,CH 3 Cl,CH 2 Cl 2 ,CHFCl 2 . CF 2 Cl 2 (CFC-12) which contains no C-H bonds was found to be inert toward attack by hydroxyl radicals. Since no other tropospheric sink reactions have been reported for CFC-12 its possible impact on the stratospheric ozone remains a controversial problem. (author)
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78 FR 52870 - Airworthiness Directives; Beechcraft Corporation Airplanes
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...
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14 CFR Appendix F to Part 135 - Airplane Flight Recorder Specification
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification F.... F Appendix F to Part 135—Airplane Flight Recorder Specification The recorded values must meet the....125 0.004g 6. Pitch Attitude ±75% ±2° 1 or 0.25 for airplanes operated under § 135.152(j) 0.5° A...
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14 CFR 121.411 - Qualifications: Check airmen (airplane) and check airmen (simulator).
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Qualifications: Check airmen (airplane) and... § 121.411 Qualifications: Check airmen (airplane) and check airmen (simulator). (a) For the purposes of this section and § 121.413: (1) A check airman (airplane) is a person who is qualified, and permitted...
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77 FR 29214 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes
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...
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77 FR 12757 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes
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...
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Flight testing a propulsion-controlled aircraft emergency flight control system on an F-15 airplane
Burcham, F. W., Jr.; Burken, John; Maine, Trindel A.
1994-01-01
Flight tests of a propulsion-controlled aircraft (PCA) system on an F-15 airplane have been conducted at the NASA Dryden Flight Research Center. The airplane was flown with all flight control surfaces locked both in the manual throttles-only mode and in an augmented system mode. In the latter mode, pilot thumbwheel commands and aircraft feedback parameters were used to position the throttles. Flight evaluation results showed that the PCA system can be used to land an airplane that has suffered a major flight control system failure safely. The PCA system was used to recover the F-15 airplane from a severe upset condition, descend, and land. Pilots from NASA, U.S. Air Force, U.S. Navy, and McDonnell Douglas Aerospace evaluated the PCA system and were favorably impressed with its capability. Manual throttles-only approaches were unsuccessful. This paper describes the PCA system operation and testing. It also presents flight test results and pilot comments.
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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
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Characterization of the natural rubber from new rubber tree clones of PB 300 series
International Nuclear Information System (INIS)
Silva, Maycon J.; Spinelli, Rafaela O.; Moreno, Rogerio M.B.; Mattoso, Luiz H.C.; Martins, Maria Alice; Scaloppi Junior, Erivaldo J.
2015-01-01
The natural rubber (NR) is present in more than 2500 species of plants, being the Hevea brasiliensis the most commercially exploited. It is a raw material of great importance to the Brazilian economy, but the country faces a production's deficit, having to import about 60% of its consumption. In this work , the latex obtained from rubber tree of new clones of PB series 300 (PB 311, PB 312, PB 314 , PB 326, PB 346 and PB 350 ) and RRIM 600 (control) were characterized by dry rubber content (DRC), total solids content, distribution of particle size, Zeta potential, thermogravimetry, differential scanning calorimetry, infrared in the spectroscopy (FTIR), nuclear magnetic resonance (NMR) and technological properties. The DRC values ranged from 33% to 40%, and total solids of 38% to 44%. All of the clones showed average particle diameter between 180.0 to 192.1 nm, excluding clones PB 326 and PB 346 with 150.0 nm and 157.9 nm, respectively. The NMR spectra and FTIR showed that the structure of the natural rubber from all clones studied is cis -1,4- polyisoprene. Natural rubber from the new clones showed good thermal stability up to 285 °C and glass transition temperature of -64 °C. (author)
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76 FR 53308 - Airworthiness Directives; Cessna Aircraft Company Airplanes
2011-08-26
... bumper, and the attachment hardware with a rudder stop modification kit. This new AD requires a change to..., Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability... acrobatic maneuvers in the airplane or replacement of the rudder stop, rudder stop bumper, and attachment...
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78 FR 42900 - Airworthiness Directives; The Boeing Company Airplanes
2013-07-18
... airplane reaching its limit of validity (LOV) of the engineering data that support the established... receipt. FOR FURTHER INFORMATION CONTACT: Galib Abumeri, Aerospace Engineer, Airframe Branch, ANM 120L... airplane structure. The last element of those initiatives is the requirement to establish a LOV of the...
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78 FR 9781 - Airworthiness Directives; Pacific Aerospace Limited Airplanes
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...
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14 CFR Appendix D to Part 135 - Airplane Flight Recorder Specification
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification D.... D Appendix D to Part 135—Airplane Flight Recorder Specification Parameters Range Accuracy sensor.... 3 For airplanes that can demonstrate the capability of deriving either the control input on control...
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Description of a Normal-Force In-Situ Turbulence Algorithm for Airplanes
Stewart, Eric C.
2003-01-01
A normal-force in-situ turbulence algorithm for potential use on commercial airliners is described. The algorithm can produce information that can be used to predict hazardous accelerations of airplanes or to aid meteorologists in forecasting weather patterns. The algorithm uses normal acceleration and other measures of the airplane state to approximate the vertical gust velocity. That is, the fundamental, yet simple, relationship between normal acceleration and the change in normal force coefficient is exploited to produce an estimate of the vertical gust velocity. This simple approach is robust and produces a time history of the vertical gust velocity that would be intuitively useful to pilots. With proper processing, the time history can be transformed into the eddy dissipation rate that would be useful to meteorologists. Flight data for a simplified research implementation of the algorithm are presented for a severe turbulence encounter of the NASA ARIES Boeing 757 research airplane. The results indicate that the algorithm has potential for producing accurate in-situ turbulence measurements. However, more extensive tests and analysis are needed with an operational implementation of the algorithm to make comparisons with other algorithms or methods.
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78 FR 42724 - Airworthiness Directives; Beechcraft Corporation Airplanes
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...
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14 CFR Appendix B to Part 121 - Airplane Flight Recorder Specification
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specification B... REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS Pt. 121, App. B Appendix B to Part 121—Airplane... airplanes that can demonstrate the capability of deriving either the control input on control movement (one...
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77 FR 56991 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes
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...
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77 FR 20511 - Airworthiness Directives; The Boeing Company Airplanes
2012-04-05
... language regarding certain ``specific airplane(s).'' We find these comments to be addressed to EASA... with thrust reverser part number (P/N) 315A2295-003 through 315A2295-154 inclusive: Do the actions...-155 through 315A2295-174 inclusive: Do the actions within 60 months after the effective date of this...
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A knowledge-based design framework for airplane conceptual and preliminary design
Anemaat, Wilhelmus A. J.
The goal of work described herein is to develop the second generation of Advanced Aircraft Analysis (AAA) into an object-oriented structure which can be used in different environments. One such environment is the third generation of AAA with its own user interface, the other environment with the same AAA methods (i.e. the knowledge) is the AAA-AML program. AAA-AML automates the initial airplane design process using current AAA methods in combination with AMRaven methodologies for dependency tracking and knowledge management, using the TechnoSoft Adaptive Modeling Language (AML). This will lead to the following benefits: (1) Reduced design time: computer aided design methods can reduce design and development time and replace tedious hand calculations. (2) Better product through improved design: more alternative designs can be evaluated in the same time span, which can lead to improved quality. (3) Reduced design cost: due to less training and less calculation errors substantial savings in design time and related cost can be obtained. (4) Improved Efficiency: the design engineer can avoid technically correct but irrelevant calculations on incomplete or out of sync information, particularly if the process enables robust geometry earlier. Although numerous advancements in knowledge based design have been developed for detailed design, currently no such integrated knowledge based conceptual and preliminary airplane design system exists. The third generation AAA methods are tested over a ten year period on many different airplane designs. Using AAA methods will demonstrate significant time savings. The AAA-AML system will be exercised and tested using 27 existing airplanes ranging from single engine propeller, business jets, airliners, UAV's to fighters. Data for the varied sizing methods will be compared with AAA results, to validate these methods. One new design, a Light Sport Aircraft (LSA), will be developed as an exercise to use the tool for designing a new airplane
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A Study of Transport Airplane Crash-Resistant Fuel Systems
National Research Council Canada - National Science Library
Robertson, S
2002-01-01
...), of transport airplane crash-resistant fuel system (CRFS). The report covers the historical studies related to aircraft crash fires and fuel containment concepts undertaken by the FAA, NASA, and the U.S...
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77 FR 31483 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
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...
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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...
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77 FR 2442 - Airworthiness Directives; The Boeing Company Airplanes
2012-01-18
... bulletin to change the concurrent requirement and provide wiring changes and an alternative installation... installation of the new panel assemblies for airplanes that have the optional water system drain plumbing and changing the interconnecting wiring between the P141 panel and the P36 and P37 panels. For airplanes with a...
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Mars Gashopper Airplane, Phase I
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...
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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... to this issue. Request To Clarify Figures in Service Information UPS requested that we clarify the...
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Diagnosis and management of headache attributed to airplane travel.
Mainardi, Federico; Maggioni, Ferdinando; Lisotto, Carlo; Zanchin, Giorgio
2013-03-01
The headache attributed to airplane travel, also named "airplane headache", is characterized by the sudden onset of a severe head pain exclusively in relation to airplane flights, mainly during the landing phase. Secondary causes, such as upper respiratory tract infections or acute sinusitis, must be ruled out. Although its cause is not thoroughly understood, sinus barotrauma should be reasonably involved in the pathophysiological mechanisms. Furthermore, in the current International Classification of Headache Disorders, rapid descent from high altitude is not considered as a possible cause of headache, although the onset of such pain in airplane travellers or aviators has been well known since the beginning of the aviation era. On the basis of a survey we conducted with the courteous cooperation of people who had experienced this type of headache, we proposed diagnostic criteria to be added to the forthcoming revision of the International Classification of Headache Disorders. Their formal validation would favour further studies aimed at improving knowledge of the pathophysiological mechanisms involved and at implementing preventative measures.
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14 CFR 121.409 - Training courses using airplane simulators and other training devices.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Training courses using airplane simulators... Program § 121.409 Training courses using airplane simulators and other training devices. (a) Training courses utilizing airplane simulators and other training devices may be included in the certificate holder...
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77 FR 64693 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes
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...
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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...
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Solar-Powered Airplane with Cameras and WLAN
Higgins, Robert G.; Dunagan, Steve E.; Sullivan, Don; Slye, Robert; Brass, James; Leung, Joe G.; Gallmeyer, Bruce; Aoyagi, Michio; Wei, Mei Y.; Herwitz, Stanley R.;
2004-01-01
An experimental airborne remote sensing system includes a remotely controlled, lightweight, solar-powered airplane (see figure) that carries two digital-output electronic cameras and communicates with a nearby ground control and monitoring station via a wireless local-area network (WLAN). The speed of the airplane -- typically <50 km/h -- is low enough to enable loitering over farm fields, disaster scenes, or other areas of interest to collect high-resolution digital imagery that could be delivered to end users (e.g., farm managers or disaster-relief coordinators) in nearly real time.
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STUDY OF THE AIR FLOWS AROUND AN AIRPLANE
Directory of Open Access Journals (Sweden)
Diaconescu Olivian
2013-06-01
Full Text Available This material presents a stage of the designing of an airplane capable to work with low capacity engines of 2.5 and 4 cmc namely the simulation of the air flow around the fuselage and the wings. The study proves the correctness of the choice made in the wing’s positioning and of the horizontal stabilizer of the airplane’s axis,for the chosen airplane type namely acrobat.
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STUDY OF THE AIR FLOWS AROUND AN AIRPLANE
Diaconescu Olivian
2013-01-01
This material presents a stage of the designing of an airplane capable to work with low capacity engines of 2.5 and 4 cmc namely the simulation of the air flow around the fuselage and the wings. The study proves the correctness of the choice made in the wing’s positioning and of the horizontal stabilizer of the airplane’s axis,for the chosen airplane type namely acrobat.
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Experimental determination of airplane mass and inertial characteristics
Wolowicz, C. H.; Yancey, R. B.
1974-01-01
Current practices are evaluated for experimentally determining airplane center of gravity, moments of inertia, and products of inertia. The techniques discussed are applicable to bodies other than airplanes. In pitching- and rolling-moment-of-inertia investigations with the airplane mounted on and pivoted about knife edges, the nonlinear spring moments that occur at large amplitudes of oscillation can be eliminated by using the proper spring configuration. The single-point suspension double-pendulum technique for obtaining yawing moments of inertia, products of inertia, and the inclination of the principal axis provides accurate results from yaw-mode oscillation data, provided that the sway-mode effects are minimized by proper suspension rig design. Rocking-mode effects in the data can be isolated.
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77 FR 58970 - Special Conditions: Embraer S.A. Model EMB-550 Airplanes, Sudden Engine Stoppage
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...
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78 FR 72554 - Airworthiness Directives; Gulfstream Aerospace Corporation Airplanes
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...
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77 FR 64695 - Airworthiness Directives; Hawker Beechcraft Corporation Airplanes
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...
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Blended Buffet-Load-Alleviation System for Fighter Airplane
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
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2011-04-21
... bulletins were revised for minor changes such as deleting THS zeroing in job set-up and deleting the THSA... this suspect gimbal could be on another unit is if it was swapped from one unit to another in the shop...
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Transformation of Helicopter PinS Procedures for Airplanes
Directory of Open Access Journals (Sweden)
Jakub Kraus
2013-09-01
Full Text Available This article deals with the possibility to use existing helicopter Point in Space procedures with minor changes for airplanes. The basis is to find parts of PinS procedures that need to be changed, suggest these changes, and then determine whether the revised procedures could be usable and could bring the benefits for airplane operations.
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75 FR 80735 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection
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...
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75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes
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...
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Effects of ZNF804A on auditory P300 response in schizophrenia.
LENUS (Irish Health Repository)
O'Donoghue, T
2014-01-01
The common variant rs1344706 within the zinc-finger protein gene ZNF804A has been strongly implicated in schizophrenia (SZ) susceptibility by a series of recent genetic association studies. Although associated with a pattern of altered neural connectivity, evidence that increased risk is mediated by an effect on cognitive deficits associated with the disorder has been equivocal. This study investigated whether the same ZNF804A risk allele was associated with variation in the P300 auditory-evoked response, a cognitively relevant putative endophenotype for SZ. We compared P300 responses in carriers and noncarriers of the ZNF804A risk allele genotype groups in Irish patients and controls (n=97). P300 response was observed to vary according to genotype in this sample, such that risk allele carriers showed relatively higher P300 response compared with noncarriers. This finding accords with behavioural data reported by our group and others. It is also consistent with the idea that ZNF804A may have an impact on cortical efficiency, reflected in the higher levels of activations required to achieve comparable behavioural accuracy on the task used.
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2012-05-07
..., Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone...-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR... and revised steps to provide flexibility and revised figures to correct errors. These changes include...
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2011-03-14
... certain motor operated valve actuators for the fuel tanks are installed, and related investigative and... additional inspections to determine if certain motor operated valve actuators for the fuel tanks are... Aircraft Certification Office, 1601 Lind Avenue SW., Renton, Washington 98057-3356; telephone 425-917-6505...
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78 FR 42895 - Airworthiness Directives; The Boeing Company Airplanes
2013-07-18
... intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support... FURTHER INFORMATION CONTACT: Galib Abumeri, Aerospace Engineer, Airframe Branch, ANM-120L, FAA, Los... support initiatives that will ensure the continued airworthiness of aging airplane structure. The last...
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77 FR 3585 - Airworthiness Directives; Cirrus Design Corporation Airplanes
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...
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77 FR 33083 - Airworthiness Directives; WACO Classic Aircraft Corporation Airplanes
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...
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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.
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Predicting Tail Buffet Loads of a Fighter Airplane
Moses, Robert W.; Pototzky, Anthony S.
2006-01-01
Buffet loads on aft aerodynamic surfaces pose a recurring problem on most twin-tailed fighter airplanes: During maneuvers at high angles of attack, vortices emanating from various surfaces on the forward parts of such an airplane (engine inlets, wings, or other fuselage appendages) often burst, immersing the tails in their wakes. Although these vortices increase lift, the frequency contents of the burst vortices become so low as to cause the aft surfaces to vibrate destructively. Now, there exists a new analysis capability for predicting buffet loads during the earliest design phase of a fighter-aircraft program. In effect, buffet pressures are applied to mathematical models in the framework of a finite-element code, complete with aeroelastic properties and working knowledge of the spatiality of the buffet pressures for all flight conditions. The results of analysis performed by use of this capability illustrate those vibratory modes of a tail fin that are most likely to be affected by buffet loads. Hence, the results help in identifying the flight conditions during which to expect problems. Using this capability, an aircraft designer can make adjustments to the airframe and possibly the aerodynamics, leading to a more robust design.
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78 FR 12256 - Airworthiness Directives; Embraer S.A. Airplanes
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...
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Role of Meteorology in Flights of a Solar-Powered Airplane
Donohue, Casey
2004-01-01
In the summer of 2001, the Helios prototype solar-powered uninhabited aerial vehicle (UAV) [a lightweight, remotely piloted airplane] was deployed to the Pacific Missile Range Facility (PMRF), at Kauai, Hawaii, in an attempt to fly to altitudes above 100,000 ft (30.48 km). The goal of flying a UAV to such high altitudes has been designated a level-I milestone of the NASA Environmental Research Aircraft and Sensor Technology (ERAST) program. In support of this goal, meteorologists from NASA Dryden Flight Research Center were sent to PMRF, as part of the flight crew, to provide current and forecast weather information to the pilots, mission directors, and planners. Information of this kind is needed to optimize flight conditions for peak aircraft performance and to enable avoidance of weather conditions that could adversely affect safety. In general, the primary weather data of concern for ground and flight operations are wind speeds (see Figure 1). Because of its long wing span [247 ft (.75 m)] and low weight [1,500 to 1,600 lb (about 680 to 726 kg)], the Helios airplane is sensitive to wind speeds exceeding 7 kn (3.6 m/s) at the surface. Also, clouds are of concern because they can block sunlight needed to energize an array of solar photovoltaic cells that provide power to the airplane. Vertical wind shear is very closely monitored in order to prevent damage or loss of control due to turbulence.
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An Evaluation of Automatic Control System Concepts for General Aviation Airplanes
Stewart, E. C.
1990-01-01
A piloted simulation study of automatic longitudinal control systems for general aviation airplanes has been conducted. These automatic control systems were designed to make the simulated airplane easy to fly for a beginning or infrequent pilot. Different control systems are presented and their characteristics are documented. In a conventional airplane control system each cockpit controller commands combinations of both the airspeed and the vertical speed. The best system in the present study decoupled the airspeed and vertical speed responses to cockpit controller inputs. An important feature of the automatic system was that neither changing flap position nor maneuvering in steeply banked turns affected either the airspeed or the vertical speed. All the pilots who flew the control system simulation were favorably impressed with the very low workload and the excellent handling qualities of the simulated airplane.
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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...
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11 CFR 100.93 - Travel by airplane or other means of transportation.
2010-01-01
... 11 Federal Elections 1 2010-01-01 2010-01-01 false Travel by airplane or other means of... (2 U.S.C. 431) Exceptions to Contributions § 100.93 Travel by airplane or other means of... section applies to all campaign travelers who use: (i) An airplane not licensed by the Federal Aviation...
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Proton exchange membrane fuel cells for electrical power generation on-board commercial airplanes.
Energy Technology Data Exchange (ETDEWEB)
Curgus, Dita Brigitte; Munoz-Ramos, Karina (Sandia National Laboratories, Albuquerque, NM); Pratt, Joseph William; Akhil, Abbas Ali (Sandia National Laboratories, Albuquerque, NM); Klebanoff, Leonard E.; Schenkman, Benjamin L. (Sandia National Laboratories, Albuquerque, NM)
2011-05-01
Deployed on a commercial airplane, proton exchange membrane 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 offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today's technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.
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Proton Exchange Membrane Fuel Cells for Electrical Power Generation On-Board Commercial Airplanes
Energy Technology Data Exchange (ETDEWEB)
Pratt, Joesph W. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Klebanoff, Leonard E. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Munoz-Ramos, Karina [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Akhil, Abbas A. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Curgus, Dita B. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Schenkman, Benjamin L. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
2011-05-01
Deployed on a commercial airplane, proton exchange membrane 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 offer a performance advantage for the airplane as a whole. Through hardware analysis and thermodynamic and electrical simulation, we found that while adding a fuel cell system using today’s technology for the PEM fuel cell and hydrogen storage is technically feasible, it will not likely give the airplane a performance benefit. However, when we re-did the analysis using DOE-target technology for the PEM fuel cell and hydrogen storage, we found that the fuel cell system would provide a performance benefit to the airplane (i.e., it can save the airplane some fuel), depending on the way it is configured.
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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
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Munk, Max M
1925-01-01
A formula for the computation of the vertical velocity component on all sides of an airplane is deduced and discussed. The formation is of value for the interpretation of such free flight tests where two airplanes fly alongside each other to facilitate observation.
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77 FR 2238 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes
2012-01-17
... attachment. If not corrected, this failure could result in loss of control of the airplane. We are issuing... the referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City..., Kansas City, Missouri 64106; telephone: (816) 329-4059; fax: (816) 329-4090; email: [email protected
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78 FR 33193 - Airworthiness Directives; The Boeing Company Airplanes
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...
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2010-01-01
... in the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... the Airplane Flight Manual, allows the airplane to fly from the point where the two engines are... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Large transport category airplanes: Turbine...
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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...
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14 CFR 121.407 - Training program: Approval of airplane simulators and other training devices.
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Training program: Approval of airplane... Program § 121.407 Training program: Approval of airplane simulators and other training devices. (a) Each airplane simulator and other training device that is used in a training course permitted under § 121.409...
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78 FR 41277 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes
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...
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DEFF Research Database (Denmark)
Mardal, Marie; Aarestrup, Frank Møller; Rasmussen, Brian Schou
2017-01-01
to difficulties in obtaining samples. The aims of the study were to test the detectability of TD and ID in airplane wastewater samples categorized according to their geographical origin. Wastewater samples (n= 17) were collected from long-distance flights and prepared with enzymatic conjugate cleaving followed...... of the airplanes with therapeutic subgroup ATC codes as variables. Airplane wastewater analysis is useful for identifying targets for WBE and toxicological analysis and explore drug use and abuse patterns....
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Traian Vuia – the Romanian inventor who first flew a powered airplane in 1906
Directory of Open Access Journals (Sweden)
Liviu FILIMON
2011-09-01
Full Text Available As observed the beginning of heavier than air devices started with Wright Brothers who flew in 1903 the first catapulted airplane equipped with an engine, similar to present motor gliders. In March 1906 took place the first flight of Vuia’s monoplane using on board installations. Since then a real competition between manufacturers has started to improve their airplanes as they become more efficient. Traian Vuia’s first flights and his beginnings are explained below.
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Topological estimation of aerodynamic controlled airplane system functionality of quality
Directory of Open Access Journals (Sweden)
С.В. Павлова
2005-01-01
Full Text Available It is suggested to use topological methods for stage estimation of aerodynamic airplane control in widespread range of its conditions The estimation is based on normalized stage virtual non-isotropy of configurational airplane systems calculation.
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14 CFR 121.505 - Flight time limitations: Two pilot crews: airplanes.
2010-01-01
...: airplanes. 121.505 Section 121.505 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Operations § 121.505 Flight time limitations: Two pilot crews: airplanes. (a) If a certificate holder conducting supplemental operations schedules a pilot to fly more than eight hours during any 24 consecutive...
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77 FR 54854 - Airworthiness Directives; The Boeing Company Airplanes
2012-09-06
.... Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New... 5 p.m., Monday through Friday, except Federal holidays. Boeing Commercial Airplanes, Attention: Data... airplanes), except as specified in paragraphs (h)(1) and (h)(2) of this AD. (1) Steps 1 through 5 of Figure...
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78 FR 52838 - Airworthiness Directives; The Boeing Company Airplanes
2013-08-27
... consequent forced landing of the airplane. DATES: This AD is effective October 1, 2013. The Director of the... to comply with this AD: Estimated Costs Cost per Cost on U.S. Action Labor cost product operators... consequent forced landing of the airplane. (f) Compliance Comply with this AD within the compliance times...
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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...
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77 FR 64704 - Airworthiness Directives; The Boeing Company Airplanes
2012-10-23
... consequent forced landing of the airplane. DATES: This AD is effective November 27, 2012. The Director of the... Labor cost product Cost on U.S. operators Operational Test 3 work hours x $85 per $255 $275,400 per..., inability to restart the engines, and consequent forced landing of the airplane. (f) Compliance Comply with...
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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)
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Brain-computer interface using P300 and virtual reality: A gaming approach for treating ADHD
DEFF Research Database (Denmark)
Rohani, Darius Adam; Sørensen, Helge Bjarup Dissing; Puthusserypady, Sadasivan
2014-01-01
This paper presents a novel brain-computer interface (BCI) system aiming at the rehabilitation of attention-deficit/hyperactive disorder in children. It uses the P300 potential in a series of feedback games to improve the subjects' attention. We applied a support vector machine (SVM) using temporal...
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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...
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Airplane radiation dose decrease during a strong Forbush decrease
Czech Academy of Sciences Publication Activity Database
Spurný, František; Kudela, K.; Dachev, T.
2004-01-01
Roč. 2, S05001 (2004), s. 1-4 ISSN 1542-7390 Grant - others:EC project(XE) FIGM-CT2000-00068 Institutional research plan: CEZ:AV0Z1048901 Keywords : airplane dose * Forbush decrease * cosmic rays Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
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rDNA insulin glargine U300 – a critical appraisal
Directory of Open Access Journals (Sweden)
Wang F
2016-12-01
Full Text Available Fei Wang,1 Stefanie Zassman,1 Philip A Goldberg2 1Department of Pharmacy Practice, School of Pharmacy, University of Connecticut, Storrs, CT, USA; 2Department of Internal Medicine, Section of Endocrinology, Yale University School of Medicine, New Haven, CT, USA Background: As the first once-daily basal insulin analog, insulin glargine 100 U/mL (Gla‑100; Lantus® rapidly evolved into the most commonly prescribed insulin therapy worldwide. However, this insulin has clinical limitations. The approval of new basal insulin analogs in 2015 has already started to alter the prescribing landscape.Objective: To review the available evidence on the clinical efficacy and safety of a more concentrated insulin glargine (recombinant DNA origin injection 300 U/mL (Gla-300 compared to insulin Gla-100 in patients with type 1 and type 2 diabetes mellitus (T1DM and T2DM.Methods: The following electronic databases were searched: PubMed and MEDLINE (using Ovid platform, Scopus, BIOSIS, and Google Scholar through June 2016. Conference proceedings of the American Diabetes Association (2015–2016 were reviewed. We also manually searched reference lists of pertinent reviews and trials.Results: A total of 6 pivotal Phase III randomized controlled trials known as the EDITION series were reviewed. All of these trials (n=3,500 were head-to-head comparisons evaluating the efficacy and tolerability of Gla-300 vs Gla-100 in a diverse population with T1DM and T2DM. These trials were of 6 months duration with a 6-month safety extension phase.Conclusion: Gla-300 was as effective as Gla-100 for improving glycemic control over 6 months in all studies, with a lower risk of nocturnal hypoglycemia significant only in insulin-experienced patients with T2DM. Overall, patients on Gla-300 required 10%–18% more basal insulin, but with less weight gain compared with Gla-100. Keywords: basal insulin, glargine 300 U/mL, glargine 100 U/mL
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77 FR 66417 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Airplanes
2012-11-05
... INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 [[Page 66418...: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written... Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri...
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2012-10-01
... should be flown into known icing. However, the original certification basis for these airplanes did not... equipment these airplanes may be qualified to fly into known light or moderate icing condition under 14 CFR... significant alternative to prohibiting the affected airplanes from flying into known icing conditions. And...
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76 FR 69685 - Airworthiness Directives; The Boeing Company Model 767-200 and -300 Series Airplanes
2011-11-09
... information describes procedures for repetitive detailed inspections or surface high frequency eddy current... 27, 2011: Perform a detailed inspection or a surface high frequency eddy current (HFEC) inspection... Bulletin 767-53A0209, Revision 1, dated July 27, 2011, specifies to contact the manufacturer for...
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77 FR 60887 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes
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...
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77 FR 44511 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes
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...
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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
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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...
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The Paper Airplane Challenge: A Market Economy Simulation. Lesson Plan.
Owens, Kimberly
This lesson plan features a classroom simulation that helps students understand the characteristics of a market economic system. The lesson plan states a purpose; cites student objectives; suggests a time duration; lists materials needed; and details a step-by-step teaching procedure. The "Paper Airplane Challenge" handout is attached. (BT)
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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)
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76 FR 13075 - Airworthiness Directives; Airbus Model A330-243F Airplanes
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
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2010-01-01
... operating nontransport category airplanes type certificated after December 31, 1964, to fly for 30 minutes...-powered airplanes: Supplemental operations. 121.643 Section 121.643 Aeronautics and Space FEDERAL AVIATION... Flight Release Rules § 121.643 Fuel supply: Nonturbine and turbo-propeller-powered airplanes...
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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...
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Private Pilot Practical Test Standards for Airplane (SEL, MEL, SES, MES)
1995-05-01
The Private Pilot - Airplane Practical Test Standards book has been : published by the Federal Aviation Administration (FAA) to establish the : standards for the private pilot certification practical tests for the airplane : category and the single-e...
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77 FR 19148 - Special Conditions: Airbus, A350-900 Series Airplane; Crew Rest Compartments
2012-03-30
... accommodates side-by-side placement of LD-3 containers in the cargo compartment. The basic A350-900 series... total overhead crew rest compartment length, the exit separation should not be less than 50 percent of... by curtains. Flight tests must be conducted to show compliance with this requirement. Each system or...
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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...
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Trade Study of Multiple Thruster Options for the Mars Airplane Concept
Kuhl, Christopher A.; Gayle, Steven W.; Hunter, Craig A.; Kenney, Patrick S.; Scola, Salvatore; Paddock, David A.; Wright, Henry S.; Gasbarre, Joseph F.
2009-01-01
A trade study was performed at NASA Langley Research Center under the Planetary Airplane Risk Reduction (PARR) project (2004-2005) to examine the option of using multiple, smaller thrusters in place of a single large thruster on the Mars airplane concept with the goal to reduce overall cost, schedule, and technical risk. The 5-lbf (22N) thruster is a common reaction control thruster on many satellites. Thousands of these types of thrusters have been built and flown on numerous programs, including MILSTAR and Intelsat VI. This study has examined the use of three 22N thrusters for the Mars airplane propulsion system and compared the results to those of the baseline single thruster system.
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Assadourian, Arthur; Reeder, John P.
1948-01-01
A series of flight tests have been made at the Langley Flight Research Division at the request of the Bureau of Aeronautics, Department of the Navy, to determine the flying qualities of the Grumman F8F-1 air- plane. This paper presents the test results necessary to determine the longitudinal stability and control characteristics end the stalling characteristics. These tests were made between February and June of 1947- The range of Mach numbers covered in this investigation was approximately 0.10 to 0.62, and no attempt was made to investigate compressibility effects at higher Mach numbers. The lateral and directional stability and control characteristics of the subject airplane have already been reported (reference 1). Also presented in this paper is a discussion of the normal accelerations induced by yawing velocity and sideslip which were considered ob,jectionable by the pilot for this airplane. A discussion of the undesirable accelerations has been included with a view towards formulating some flying-qualities requirements limiting them.
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76 FR 17022 - Special Conditions: Gulfstream Model GVI Airplane; High Incidence Protection
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...
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76 FR 41659 - Airworthiness Directives; The Boeing Company Model 747 Airplanes
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...
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A Conceptual Design and Analysis Method for Conventional and Unconventional Airplanes
Elmendorp, R.J.M.; Vos, R.; La Rocca, G.
2014-01-01
A design method is presented that has been implemented in a software program to investigate the merits of conventional and unconventional transport airplanes. Design and analysis methods are implemented in a design tool capable of creating a conceptual design based on a set of toplevel requirements.
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Simulated airplane headache: a proxy towards identification of underlying mechanisms.
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.
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Skoog, Richard B
1951-01-01
A theoretical analysis of the effects of aeroelasticity on the stick-fixed static longitudinal stability and elevator angle required for balance of an airplane is presented together with calculated effects for a swept-wing bomber of relatively high flexibility. Although large changes in stability due to certain parameters are indicated for the example airplane, the over-all stability change after considering all parameters was quite small, compared to the individual effects, due to the counterbalancing of wing and tail contributions. The effect of flexibility on longitudinal control for the example airplane was found to be of little real importance.
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Kuhl. Christopher A.
2009-01-01
The Aerial Regional-Scale Environmental Survey (ARES) is a Mars exploration mission concept with the goal of taking scientific measurements of the atmosphere, surface, and subsurface of Mars by using an airplane as the payload platform. ARES team first conducted a Phase-A study for a 2007 launch opportunity, which was completed in May 2003. Following this study, significant efforts were undertaken to reduce the risk of the atmospheric flight system, under the NASA Langley Planetary Airplane Risk Reduction Project. The concept was then proposed to the Mars Scout program in 2006 for a 2011 launch opportunity. This paper summarizes the design and development of the ARES airplane propulsion subsystem beginning with the inception of the ARES project in 2002 through the submittal of the Mars Scout proposal in July 2006.
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Comparison of portable oxygen concentrators in a simulated airplane environment.
Fischer, Rainald; Wanka, Eva R; Einhaeupl, Franziska; Voll, Klaus; Schiffl, Helmut; Lang, Susanne M; Gruss, Martin; Ferrari, Uta
2013-01-01
Portable oxygen concentrators (POC) are highly desirable for patients with lung disease traveling by airplane, as these devices allow theoretically much higher travel times if additional batteries can be used. However, it is unclear whether POCs produce enough oxygen in airplanes at cruising altitude, even if complying with aviation regulations. We evaluated five frequently used POCs (XPO2 (Invacare, USA), Freestyle (AirSep C., USA), Evergo (Philipps Healthcare, Germany), Inogen One (Inogen, USA), Eclipse 3 (Sequal, USA)) at an altitude of 2650 m (as simulated airplane environment) in 11 patients with chronic obstructive lung disease (COPD) and compared theses POCs with the standard oxygen system (WS120, EMS Ltd., Germany) used by Lufthansa. Oxygen was delivered by each POC for 30 min to each patient at rest, blood gases were then drawn from the arterialized ear lobe. All POCs were able to deliver enough oxygen to increase the PaO(2) of our subjects by at least 1.40 kPa (10 mmHg). However, to achieve this increase, the two most lightweight POCs (Freestyle and Invacare XPO2) had to be run at their maximum level. This causes a significant reduction of battery life. The three other POCs (EverGo, Inogen One, Eclipse 3) and the WS120 were able to increase the PaO(2) by more than 2.55 kPa (20 mmHg), which provides extra safety for patients with more severe basal hypoxemia. When choosing the right oxygen system for air travel in patients in COPD, not only weight, but also battery life and maximum possible oxygen output must be considered carefully. Copyright © 2012 Elsevier Ltd. All rights reserved.
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Fuel-Cell-Powered Electric Motor Drive Analyzed for a Large Airplane
Brown, Gerald V.; Choi, Benjamin B.
2005-01-01
Because of its high efficiency, fuel cell technology may be used to launch a new generation of more-electric aeropropulsion and power systems for future aircraft. Electric-motor-driven airplanes using fuel-cell powerplants would be beneficial to the environment because of fuel savings, low noise, and zero carbon-dioxide emissions. In spite of the fuel cell s efficiency benefit, to produce the same shaft drive power, a fuel cell- powered electric-drive system must be definitely heavier than a turbine-drive system. However, the fuel-cell system s overall efficiency from fuel-to-shaft power is higher than for a turbine-drive system. This means that the fuel consumption rate could be lower than for a conventional system. For heavier, fuel-laden planes for longer flights, we might achieve substantial fuel savings. In the airplane industry, in fact, an efficiency gain of even a few percentage points can make a major economic difference in operating costs.
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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...
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Small-scale fixed wing airplane software verification flight test
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.
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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...
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34 CFR 300.300 - Parental consent.
2010-07-01
...; and (iii) Is not required to convene an IEP Team meeting or develop an IEP under §§ 300.320 and 300... related services; and (iv) Is not required to convene an IEP Team meeting or develop an IEP under §§ 300...
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78 FR 40642 - Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes
2013-07-08
... landing gear attachment lever causes the rod end to bend at each gear retraction sequence. We are issuing... Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this... Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone...
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78 FR 59223 - Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes
2013-09-26
... safety washer and the nose landing gear attachment lever causes the rod end to bend at each gear... information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information...: Mike Kiesov, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City...
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14 CFR Appendix E to Part 91 - Airplane Flight Recorder Specifications
2010-01-01
... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications E Appendix E to Part 91 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Appendix E to Part 91—Airplane Flight Recorder Specifications Parameters Range Installed system 1 minimum...
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14 CFR Appendix B to Part 135 - Airplane Flight Recorder Specifications
2010-01-01
... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Airplane Flight Recorder Specifications B Appendix B to Part 135 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION.... B Appendix B to Part 135—Airplane Flight Recorder Specifications Parameters Range Installed system 1...
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78 FR 11978 - Airworthiness Directives; Reims Aviation S.A. Airplanes
2013-02-21
... used in nose landing gear (NLG) attachment brackets could lead to failure of the NLG bracket with... referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri..., Kansas City, Missouri 64106; telephone: (816) 329-4119; fax: (816) 329-4090; email: [email protected]..
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78 FR 275 - Airworthiness Directives; REIMS Aviation S.A. Airplanes
2013-01-03
... 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... requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Albert Mercado, Aerospace...
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Zabinsky, J. M.; Burnham, R. W.; Flora, C. C.; Gotlieb, P.; Grande, D. L.; Gunnarson, D. W.; Howard, W. M.; Hunt, D.; Jakubowski, G. W.; Johnson, P. E.
1975-01-01
An assessment of risk, in terms of delivery delays, cost overrun, and performance achievement, associated with the V/STOL technology airplane is presented. The risk is discussed in terms of weight, structure, aerodynamics, propulsion, mechanical drive, and flight controls. The analysis ensures that risks associated with the design and development of the airplane will be eliminated in the course of the program and a useful technology airplane that meets the predicted cost, schedule, and performance can be produced.
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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.
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76 FR 62661 - Airworthiness Directives; The Boeing Company Model 767-200 and -300 Series Airplanes
2011-10-11
...-766-5680; e-mail: [email protected] ; Internet: https://www.myboeingfleet.com . You may review...- 3356; phone: 425-917-6596; fax: 425-917-6590; e-mail: [email protected] . SUPPLEMENTARY INFORMATION... Transport Association (ATA) of America Code 25: Equipment and Furnishings. Unsafe Condition (e) This AD was...
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75 FR 38945 - Airworthiness Directives; The Boeing Company Model 777-200 and -300 Series Airplanes
2010-07-07
..., 2006. The service bulletin describes procedures for installing new operational software in the cabin... loading the new cabin services system central storage device software and CSCP OPS into the MMC. FAA's... cabin services system central storage device software and cabin system control panel operational...
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Impact of design options on natural circulation performance of the AFR-300 advanced fast reactor
International Nuclear Information System (INIS)
Dunn, F. D.
2002-01-01
The AFR-300, Advanced Fast Reactor (300 Mwe), has been proposed as a Generation IV concept. It could also be used to dispose of surplus weapons grade plutonium or as an actinide burner for transmutation of high level radioactive waste. AFR-300 uses metallic fuel and sodium coolant. The design of AFR-300 takes account of the successful design and operation of EBR-II, but the AFR-300 design includes a number of advances such as an advanced fuel cycle, inspectability and improved economics. One significant difference between AFR-300 and EBR-II is that AFR-300 is considerably larger. Another significant difference is that AFR-300 has no auxiliary EM pump in the primary loop to guarantee positive core flow when the main primary pumps are shut down. Thus, one question that has come up in connection with the AFR-300 design is whether natural circulation flow is sufficient to prevent damage to the core if the primary pumps fail. Insufficient natural circulation flow through the core could result in high cladding temperatures and cladding failure due to eutectic penetration of the cladding by the metal fuel. The rate of eutectic penetration of the cladding is strongly temperature dependent, so cladding failure depends on how hot the cladding gets and how long it is at elevated temperatures. To investigate the adequacy of natural circulation flow, a number of pump failure transients and a number of design options have been analyzed with the SASSYS-1 systems analysis code. This code has been validated for natural circulation behavior by analysis of Shutdown Heat Removal Tests performed in EBR-II. The AFR-300 design includes flywheels on the primary pumps to extend the pump coastdown times, and the size of the flywheels can be picked to give optimum coastdown times. One series of transients that has been run consists of protected loss-of-flow transients with various values for the combined moment of inertia of the pump, the motor and the flywheel giving coastdown times from 70
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Dorpinghaus, R.
1982-01-01
A single engine two passenger airplane, constructed completely from fiber reinforced plastic materials is introduced. The cockpit, controls, wing profile, and landing gear are discussed. Development of the airframe is also presented.
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Gouweloos, Juul; Postma, Ingri L. E.; Te Brake, Hans; Sijbrandij, Marit; Kleber, Rolf J.; Goslings, J. Carel
2016-01-01
In 2009, a commercial airplane crashed near Amsterdam. This longitudinal study aims to investigate (1) the proportion of survivors of the airplane crash showing a probable posttraumatic stress disorders (PTSD) or depressive disorder, and (2) whether symptoms of PTSD and depression were predicted by
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Gouweloos, J.; Postma, Ingri L.E.; Te Brake, Hans; Sijbrandij, E.M.; Kleber, R.J.; Goslings, J. Carel
In 2009, a commercial airplane crashed near Amsterdam. This longitudinal study aims to investigate (1) the proportion of survivors of the airplane crash showing a probable posttraumatic stress disorders (PTSD) or depressive disorder, and (2) whether symptoms of PTSD and depression were predicted by
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Gouweloos, J.; Postma, I.L.; te Brake, H.; Sijbrandij, M.; Kleber, R.; Goslings, J.C.
2016-01-01
In 2009, a commercial airplane crashed near Amsterdam. This longitudinal study aims to investigate (1) the proportion of survivors of the airplane crash showing a probable posttraumatic stress disorders (PTSD) or depressive disorder, and (2) whether symptoms of PTSD and depression were predicted by
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Velocity estimation of an airplane through a single satellite image
Institute of Scientific and Technical Information of China (English)
Zhuxin Zhao; Gongjian Wen; Bingwei Hui; Deren Li
2012-01-01
The motion information of a moving target can be recorded in a single image by a push-broom satellite. A push-broom satellite image is composed of many image lines sensed at different time instants. A method to estimate the velocity of a flying airplane from a single image based on the imagery model of the linear push-broom sensor is proposed. Some key points on the high-resolution image of the plane are chosen to determine the velocity (speed and direction). The performance of the method is tested and verified by experiments using a WorldView-1 image.%The motion information of a moving target can be recorded in a single image by a push-broom satellite.A push-broom satellite image is composed of many image lines sensed at different time instants.A method to estimate the velocity of a flying airplane from a single image based on the imagery model of the linear push-broom sensor is proposed.Some key points on the high-resolution image of the plane are chosen to determine the velocity (speed and direction).The performance of the method is tested and verified by experiments using a WorldView-1 image.
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40 CFR 300.300 - Phase I-Discovery or notification.
2010-07-01
... 40 Protection of Environment 27 2010-07-01 2010-07-01 false Phase I-Discovery or notification. 300.300 Section 300.300 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SUPERFUND... person in charge of a vessel or a facility shall, as soon as he or she has knowledge of any discharge...
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75 FR 77793 - Airworthiness Directives; The Boeing Company Model 747 Airplanes
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...
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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.)
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75 FR 20265 - Airworthiness Directives; Liberty Aerospace Incorporated Model XL-2 Airplanes
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...
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Analysis of means of improving the uncontrolled lateral motions of personal airplanes
Mckinney, Marion O , Jr
1951-01-01
A theoretical analysis has been made of means of improving the uncontrolled motions of personal airplanes. The purpose of this investigation was to determine whether such airplanes could be made to fly uncontrolled for an indefinite period of time without getting into dangerous attitudes and for a reasonable period of time (1 to 3 min) without deviating excessively from their original course. The results of this analysis indicated that the uncontrolled motions of a personal airplane could be made safe as regards spiral tendencies and could be greatly improved as regards maintenance of course without resort to an autopilot. The only way to make the uncontrolled motions completely satisfactory as regards continuous maintenance of course, however, is to use a conventional type of autopilot.
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Design and flight experience with a digital fly-by-wire control system in an F-8 airplane
Deets, D. A.; Szalai, K. J.
1974-01-01
A digital fly-by-wire flight control system was designed, built, and for the first time flown in an airplane. The system, which uses components from the Apollo guidance system, is installed in an F-8 airplane as the primary control system. A lunar module guidance computer is the central element in the three-axis, single-channel, multimode, digital control system. A triplex electrical analog system which provides unaugmented control of the airplane is the only backup to the digital system. Flight results showed highly successful system operation, although the trim update rate was inadequate for precise trim changes, causing minor concern. The use of a digital system to implement conventional control laws proved to be practical for flight. Logic functions coded as an integral part of the control laws were found to be advantageous. Although software verification required extensive effort, confidence in the software was achieved.
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DEFF Research Database (Denmark)
Høyer, Christian Bjerre; Nielsen, Trine Skov; Nagel, Lise Loft
2012-01-01
A fatal accident is reported in which a small single-engine light airplane crashed. The airplane carried two persons in the front seats, both of whom possessed valid pilot certificates. Both victims were subject to autopsy, including post-mortem computed tomography scanning (PMCT) prior...... to the autopsy. The autopsies showed massive destruction to the bodies of the two victims but did not identify any signs of acute or chronic medical conditions that could explain loss of control of the airplane. PMCT, histological examination, and forensic chemical analysis also failed to identify an explanation...... for the crash. A detailed review of an airplane identical to the crashed airplane was performed in collaboration with the Danish Accident Investigation Board and the Danish National Police, National Centre of Forensic Services. The injuries were described using the abbreviated injury scale, the injury severity...
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76 FR 35344 - Airworthiness Directives; Costruzioni Aeronautiche Tecnam srl Model P2006T Airplanes
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...
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2011-01-20
... studs, blanket studs, and temporary fasteners; replacement of sealant if necessary; and related... installed Doing a detailed inspection of the T/R panel wall inner bolt holes for elongation Doing a general... click bond stud, blanket stud, and temporary fastener is loose, damaged, or missing Doing an NDT (eddy...
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Flight Test of the F/A-18 Active Aeroelastic Wing Airplane
Voracek, David
2007-01-01
A viewgraph presentation of flight tests performed on the F/A active aeroelastic wing airplane is shown. The topics include: 1) F/A-18 AAW Airplane; 2) F/A-18 AAW Control Surfaces; 3) Flight Test Background; 4) Roll Control Effectiveness Regions; 5) AAW Design Test Points; 6) AAW Phase I Test Maneuvers; 7) OBES Pitch Doublets; 8) OBES Roll Doublets; 9) AAW Aileron Flexibility; 10) Phase I - Lessons Learned; 11) Control Law Development and Verification & Validation Testing; 12) AAW Phase II RFCS Envelopes; 13) AAW 1-g Phase II Flight Test; 14) Region I - Subsonic 1-g Rolls; 15) Region I - Subsonic 1-g 360 Roll; 16) Region II - Supersonic 1-g Rolls; 17) Region II - Supersonic 1-g 360 Roll; 18) Region III - Subsonic 1-g Rolls; 19) Roll Axis HOS/LOS Comparison Region II - Supersonic (open-loop); 20) Roll Axis HOS/LOS Comparison Region II - Supersonic (closed-loop); 21) AAW Phase II Elevated-g Flight Test; 22) Region I - Subsonic 4-g RPO; and 23) Phase II - Lessons Learned
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2010-12-30
...-CN, dated September 20, 2010, to cancel EASA AD 2010-0083, dated May 3, 2010, for the specified products. EASA AD 2010-0083-CN states: It has been assessed that multiple NRV [non return valve] failures... not have a significant economic impact, positive or negative, on a substantial number of small...
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75 FR 61655 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes
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...
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2011-01-28
..., at least one means must be provided to cover anticipated turbulence (e.g., sufficient handholds... without an intervening cargo compartment wall, the following applies: (a) Any wall of the module...
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Effects of road traffic background noise on judgments of individual airplane noises. Ph.D. Thesis
Powell, C. A.
1979-01-01
Two laboratory experiments were conducted to investigate the effects of road-traffic background noise on judgments of individual airplane flyover noises. In the first experiment, 27 subjects judged a set of 16 airplane flyover noises in the presence of traffic-noise sessions of 30-min duration consisting of the combinations of 3 traffic-noise types and 3 noise levels. In the second experiment, 24 subjects judged the same airplane flyover noises in the presence of traffic-noise sessions of 10-min duration consisting of the combinations of 2 traffic-noise types and 4 noise levels. In both experiments the airplane noises were judged less annoying in the presence of high traffic-noise levels than in the presence of low traffic-noise levels.
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2011-01-05
... corrosion damage of the chrome runout on the head side found on all four midspar fuse pins of the nacelle strut. Additionally, a large portion of the chrome plate was missing from the corroded area of the shank... 616 $209,440, per inspection inspections (required by AD inspection cycle. 2008-21-03). cycle. Midspar...
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78 FR 1723 - Airworthiness Directives; Airbus Airplanes
2013-01-09
... Airworthiness Directives; Airbus Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. SUMMARY: We are adopting a new airworthiness directive (AD) for all Airbus... Friday, except Federal holidays. For service information identified in this AD, contact Airbus...
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2011-06-10
... products listed above. Since we issued AD 2009-18-19, EASA issued Airworthiness Directive 2010-0083-CN.... EASA AD 2010-0083-CN states: It has been assessed that multiple NRV [non-return valve] failures in..., positive or negative, on a substantial number of small entities under the criteria of the Regulatory...
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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.
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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...
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Longitudinal aerodynamic characteristics of light, twin-engine, propeller-driven airplanes
Wolowicz, C. H.; Yancey, R. B.
1972-01-01
Representative state-of-the-art analytical procedures and design data for predicting the longitudinal static and dynamic stability and control characteristics of light, propeller-driven airplanes are presented. Procedures for predicting drag characteristics are also included. The procedures are applied to a twin-engine, propeller-driven airplane in the clean configuration from zero lift to stall conditions. The calculated characteristics are compared with wind-tunnel and flight data. Included in the comparisons are level-flight trim characteristics, period and damping of the short-period oscillatory mode, and windup-turn characteristics. All calculations are documented.
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Directory of Open Access Journals (Sweden)
Xiaozhe WANG
2018-06-01
Full Text Available The preliminary phase is significant during the whole design process of a large airplane because of its enormous potential in enhancing the overall performance. However, classical sequential designs can hardly adapt to modern airplanes, due to their repeated iterations, long periods, and massive computational burdens. Multidisciplinary analysis and optimization demonstrates the capability to tackle such complex design issues. In this paper, an integrated optimization method for the preliminary design of a large airplane is proposed, accounting for aerodynamics, structure, and stability. Aeroelastic responses are computed by a rapid three-dimensional flight load analysis method combining the high-order panel method and the structural elasticity correction. The flow field is determined by the viscous/inviscid iteration method, and the cruise stability is evaluated by the linear small-disturbance theory. Parametric optimization is carried out using genetic algorithm to seek the minimal weight of a simplified plate-beam wing structure in the cruise trim condition subject to aeroelastic, aerodynamic, and stability constraints, and the optimal wing geometry shape, front/rear spar positions, and structural sizes are obtained simultaneously. To reduce the computational burden of the static aeroelasticity analysis in the optimization process, the Kriging method is employed to predict aerodynamic influence coefficient matrices of different aerodynamic shapes. The multidisciplinary analyses guarantee computational accuracy and efficiency, and the integrated optimization considers the coupling effect sufficiently between different disciplines to improve the overall performance, avoiding the limitations of sequential approaches utilized currently. Keywords: Aeroelasticity, Integrated optimization, Multidisciplinary analysis, Large airplane, Preliminary design
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78 FR 23105 - Airworthiness Directives; Airbus Airplanes
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...
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National Research Council Canada - National Science Library
Brown, B
1951-01-01
The longitudinal stability and control characteristics of a large airplane have been measured with a mechanical feel device in combination with a booster incorporated in the elevator-control system...
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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...
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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.
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77 FR 49386 - Airworthiness Directives; Airbus Airplanes
2012-08-16
... 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..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...
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77 FR 12989 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 76572 - Airworthiness Directives; Airbus Airplanes
2013-12-18
... 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..., except Federal holidays. For Airbus service information identified in this proposed AD, contact Airbus...
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77 FR 1622 - Airworthiness Directives; Socata Airplanes
2012-01-11
... the FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a.... Send information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901...
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Developing aircraft photonic networks for airplane systems
DEFF Research Database (Denmark)
White, Henry J.; Brownjohn, Nick; Baptista, João
2013-01-01
Achieving affordable high speed fiber optic communication networks for airplane systems has proved to be challenging. In this paper we describe a summary of the EU Framework 7 project DAPHNE (Developing Aircraft Photonic Networks). DAPHNE aimed to exploit photonic technology from terrestrial...
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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...
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76 FR 78524 - Airworthiness Directives; Airbus Airplanes
2011-12-19
... Airworthiness 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 Airbus... an aeroplane from the Airbus production line, a fault message was triggered on FDU1 [fire detection...
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76 FR 15818 - Airworthiness Directives; Reims Aviation S.A. Model F406 Airplanes
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...
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76 FR 31800 - Airworthiness Directives; Viking Air Limited Model DHC-3 (Otter) Airplanes
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...
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75 FR 30282 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes
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...
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75 FR 12468 - Airworthiness Directives; Quartz Mountain Aerospace, Inc. Model 11E Airplanes
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...
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A RECOGNITION METHOD FOR AIRPLANE TARGETS USING 3D POINT CLOUD DATA
Directory of Open Access Journals (Sweden)
M. Zhou
2012-07-01
Full Text Available LiDAR is capable of obtaining three dimension coordinates of the terrain and targets directly and is widely applied in digital city, emergent disaster mitigation and environment monitoring. Especially because of its ability of penetrating the low density vegetation and canopy, LiDAR technique has superior advantages in hidden and camouflaged targets detection and recognition. Based on the multi-echo data of LiDAR, and combining the invariant moment theory, this paper presents a recognition method for classic airplanes (even hidden targets mainly under the cover of canopy using KD-Tree segmented point cloud data. The proposed algorithm firstly uses KD-tree to organize and manage point cloud data, and makes use of the clustering method to segment objects, and then the prior knowledge and invariant recognition moment are utilized to recognise airplanes. The outcomes of this test verified the practicality and feasibility of the method derived in this paper. And these could be applied in target measuring and modelling of subsequent data processing.
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78 FR 18925 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 26996 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 37498 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 53635 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 15636 - Airworthiness Directives; Airbus Airplanes
2012-03-16
... 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... identified in this proposed AD, contact Airbus, Airworthiness Office--EAS, 1 Rond Point Maurice Bellonte...
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77 FR 36125 - Airworthiness Directives; SOCATA Airplanes
2012-06-18
... FAA, call (816) 329-4148. FOR FURTHER INFORMATION CONTACT: Albert Mercado, Aerospace Engineer, FAA...; fax: (816) 329-4090; email: albert.mercado@faa.gov . SUPPLEMENTARY INFORMATION: Discussion We issued a... information to ATTN: Albert Mercado, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301...
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Ground vibration test results of a JetStar airplane using impulsive sine excitation
Kehoe, Michael W.; Voracek, David F.
1989-01-01
Structural excitation is important for both ground vibration and flight flutter testing. The structural responses caused by this excitation are analyzed to determine frequency, damping, and mode shape information. Many excitation waveforms have been used throughout the years. The use of impulsive sine (sin omega t)/omega t as an excitation waveform for ground vibration testing and the advantages of using this waveform for flight flutter testing are discussed. The ground vibration test results of a modified JetStar airplane using impulsive sine as an excitation waveform are compared with the test results of the same airplane using multiple-input random excitation. The results indicated that the structure was sufficiently excited using the impulsive sine waveform. Comparisons of input force spectrums, mode shape plots, and frequency and damping values for the two methods of excitation are presented.
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2010-01-01
... that airplane at a weight that (allowing for normal consumption of fuel and oil in flight to the... off that airplane unless its weight on arrival, allowing for normal consumption of fuel and oil in... described below from a point 50 feet above the intersection of the obstruction clearance plane and the...
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Brace for impact! A thesis on medical care following an airplane crash
Postma, I.L.E.
2014-01-01
In this thesis the events and management of a mass casualty incident (MCI) of an airplane crash are studied from a medical point of view. The incident is broken down into areas that are applicable to other MCIs. it is believed that the detailed study of an exceptional event can provide vital
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78 FR 39190 - Airworthiness Directives; Airbus Airplanes
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...
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76 FR 72350 - Airworthiness Directives; Airbus Airplanes
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...
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Semiconductor resistance thermometer for the temperature range 300-0.3 K
International Nuclear Information System (INIS)
Zinov'eva, K.N.; Zarubin, L.I.; Nemish, I.Yu.; Vorobkalo, F.M.; Boldarev, S.T.; AN Ukrainskoj SSR, Kiev. Inst. Poluprovodnikov)
1979-01-01
Thermometric characteristics of semiconductor resistor thermometers for the temperature range from 300 to 0.3 K and from 77 to 0.3 K are given. Temperature dependence of thermometer resistances in the 300-1.3 K range was measured in cryostats with pumping-out of N 2 , H 2 and 4 He. For measurements below 1.3 K use was made of a 3 H- 4 He dissolving cryostat. The accuracy of measuring temperatures in the 1.3-0.3 K range is not below +-0.003 K, the error in determining thermometer resistances does not exceed 1%. The analysis of obtained thermometric characteristics of several series of semiconductor resistance thermometers showed that observed insignificant spread of resistances of thermometers in one series and identity of characteristics allows them to be used without preliminary calibration for relatively coarse measurements in the range from 3O0 to 0.3 K. Besides, it has been found that in the 4.2-0.3 K range the thermometric characteristics represent a straight line in the lgR-Tsup(-n) coordinates, where R is the thermometer resistance, T is the temperature and n=0.5. Thus, the thermometers of the same series can be calibrated only in 2 or 3 reference point measurements
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77 FR 66760 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 29261 - Airworthiness Directives; Airbus Airplanes
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...
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78 FR 14029 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 66762 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 15644 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 65146 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 16492 - Airworthiness Directives; Airbus Airplanes
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...
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75 FR 81417 - Airworthiness Directives; Piper Aircraft, Inc. Model PA-28-161 Airplanes
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...
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77 FR 60325 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 64765 - Airworthiness Directives; Airbus Airplanes
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...
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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...
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Oblique-Flying-Wing Supersonic Transport Airplane
Van Der Velden, Alexander J. M.
1992-01-01
Oblique-flying-wing supersonic airplane proposed as possible alternative to B747B (or equivalent). Tranports passengers and cargo as fast as twice speed of sound at same cost as current subsonic transports. Flies at same holding speeds as present supersonic transports but requires only half takeoff distance.
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Can triptans safely be used for airplane headache?
Ipekdal, H Ilker; Karadaş, Ömer; Öz, Oğuzhan; Ulaş, Ümit H
2011-12-01
A few cases of airplane headache (AH) have been reported in the literature. Treatment strategies of AHs are also controversial. We followed-up five patients with AH. They were symptom-free during the daytime. Their physical, neurological, and ear-nose-throat examinations were all normal. Blood chemistries, cerebral magnetic resonance imaging, cerebral magnetic resonance imaging angiography, and paranasal sinus tomography studies of the patients were also normal. We preferred triptans because of the possible effect on the mechanism of AH. Patients were recommended to use single-dose of their drugs half an hour prior to flights. All of the patients had a good response to single dose triptan treatment and became headache-free during flights. This is the first study which puts forward the usefulness of the triptans as a safe treatment choice for airplane AH.
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77 FR 67263 - Airworthiness Directives; Airbus Airplanes
2012-11-09
... to correct an unsafe condition for the specified products. The MCAI states: During shop visit... first installed on an airplane: Before further flight, do the actions in Figure A-FBBAA-Sheet 03, Flow... Figure A-FBBAA-Sheet 02, Flow Chart, of Airbus Mandatory Service Bulletin A330-71-3025, excluding...
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Exposure to tri-o-cresyl phosphate detected in jet airplane passengers
International Nuclear Information System (INIS)
Liyasova, Mariya; Li, Bin; Schopfer, Lawrence M.; Nachon, Florian; Masson, Patrick; Furlong, Clement E.; Lockridge, Oksana
2011-01-01
The aircraft cabin and flight deck ventilation are supplied from partially compressed unfiltered bleed air directly from the engine. Worn or defective engine seals can result in the release of engine oil into the cabin air supply. Aircrew and passengers have complained of illness following such “fume events”. Adverse health effects are hypothesized to result from exposure to tricresyl phosphate mixed esters, a chemical added to jet engine oil and hydraulic fluid for its anti-wear properties. Our goal was to develop a laboratory test for exposure to tricresyl phosphate. The assay was based on the fact that the active-site serine of butyrylcholinesterase reacts with the active metabolite of tri-o-cresyl phosphate, cresyl saligenin phosphate, to make a stable phosphorylated adduct with an added mass of 80 Da. No other organophosphorus agent makes this adduct in vivo on butyrylcholinesterase. Blood samples from jet airplane passengers were obtained 24–48 h after completing a flight. Butyrylcholinesterase was partially purified from 25 ml serum or plasma, digested with pepsin, enriched for phosphorylated peptides by binding to titanium oxide, and analyzed by mass spectrometry. Of 12 jet airplane passengers tested, 6 were positive for exposure to tri-o-cresyl phosphate that is, they had detectable amounts of the phosphorylated peptide FGEpSAGAAS. The level of exposure was very low. No more than 0.05 to 3% of plasma butyrylcholinesterase was modified. None of the subjects had toxic symptoms. Four of the positive subjects were retested 3 to 7 months following their last airplane trip and were found to be negative for phosphorylated butyrylcholinesterase. In conclusion, this is the first report of an assay that detects exposure to tri-o-cresyl phosphate in jet airplane travelers. -- Highlights: ► Travel on jet airplanes is associated with an illness, aerotoxic syndrome. ► A possible cause is exposure to tricresyl phosphate in engine lubricating oil. ► A blood
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Exposure to tri-o-cresyl phosphate detected in jet airplane passengers
Energy Technology Data Exchange (ETDEWEB)
Liyasova, Mariya, E-mail: mliyasov@unmc.edu [Eppley Institute, University of Nebraska Medical Center, Omaha, NE 68198-5950 (United States); Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center, Omaha, NE (United States); Li, Bin, E-mail: binli@unmc.edu [Eppley Institute, University of Nebraska Medical Center, Omaha, NE 68198-5950 (United States); Schopfer, Lawrence M., E-mail: lmschopf@unmc.edu [Eppley Institute, University of Nebraska Medical Center, Omaha, NE 68198-5950 (United States); Nachon, Florian, E-mail: fnachon@nachon.net [Departement de Toxicologie, Institut de Recherche Biomedicale des Armees, 24 avenue des Marquis du Gresivaudan, 38702 La Tronche (France); Masson, Patrick, E-mail: pmasson@unmc.edu [Departement de Toxicologie, Institut de Recherche Biomedicale des Armees, 24 avenue des Marquis du Gresivaudan, 38702 La Tronche (France); Eppley Institute, University of Nebraska Medical Center, Omaha, NE 68198-5950 (United States); Furlong, Clement E., E-mail: clem@uw.edu [Department of Medicine (Div. Medical Genetics) and Genome Sciences, University of Washington, Seattle, WA 98195 (United States); Lockridge, Oksana, E-mail: olockrid@unmc.edu [Eppley Institute, University of Nebraska Medical Center, Omaha, NE 68198-5950 (United States); Department of Environmental, Agricultural, and Occupational Health, University of Nebraska Medical Center, Omaha, NE (United States)
2011-11-15
The aircraft cabin and flight deck ventilation are supplied from partially compressed unfiltered bleed air directly from the engine. Worn or defective engine seals can result in the release of engine oil into the cabin air supply. Aircrew and passengers have complained of illness following such 'fume events'. Adverse health effects are hypothesized to result from exposure to tricresyl phosphate mixed esters, a chemical added to jet engine oil and hydraulic fluid for its anti-wear properties. Our goal was to develop a laboratory test for exposure to tricresyl phosphate. The assay was based on the fact that the active-site serine of butyrylcholinesterase reacts with the active metabolite of tri-o-cresyl phosphate, cresyl saligenin phosphate, to make a stable phosphorylated adduct with an added mass of 80 Da. No other organophosphorus agent makes this adduct in vivo on butyrylcholinesterase. Blood samples from jet airplane passengers were obtained 24-48 h after completing a flight. Butyrylcholinesterase was partially purified from 25 ml serum or plasma, digested with pepsin, enriched for phosphorylated peptides by binding to titanium oxide, and analyzed by mass spectrometry. Of 12 jet airplane passengers tested, 6 were positive for exposure to tri-o-cresyl phosphate that is, they had detectable amounts of the phosphorylated peptide FGEpSAGAAS. The level of exposure was very low. No more than 0.05 to 3% of plasma butyrylcholinesterase was modified. None of the subjects had toxic symptoms. Four of the positive subjects were retested 3 to 7 months following their last airplane trip and were found to be negative for phosphorylated butyrylcholinesterase. In conclusion, this is the first report of an assay that detects exposure to tri-o-cresyl phosphate in jet airplane travelers. -- Highlights: Black-Right-Pointing-Pointer Travel on jet airplanes is associated with an illness, aerotoxic syndrome. Black-Right-Pointing-Pointer A possible cause is exposure to
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Oblique-wing research airplane motion simulation with decoupling control laws
Kempel, Robert W.; Mc Neill, Walter E.; Maine, Trindel A.
1988-01-01
A large piloted vertical motion simulator was used to assess the performance of a preliminary decoupling control law for an early version of the F-8 oblique wing research demonstrator airplane. Evaluations were performed for five discrete flight conditions, ranging from low-altitude subsonic Mach numbers to moderate-altitude supersonic Mach numbers. Asymmetric sideforce as a function of angle of attack was found to be the primary cause of both the lateral acceleration noted in pitch and the tendency to roll into left turns and out of right turns. The flight control system was shown to be effective in generally decoupling the airplane and reducing the lateral acceleration in pitch maneuvers.
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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...
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2013-03-08
... Committee; Transport Airplane Performance and Handling Characteristics--New Task AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of new task assignment for the Aviation Rulemaking Advisory Committee... findings. The Task The FAA tasked ARAC to consider several areas within the airplane performance and...
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77 FR 26998 - Airworthiness Directives; Airbus Airplanes
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...
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77 FR 60658 - Airworthiness Directives; Airbus Airplanes
2012-10-04
... proposed AD would require a high frequency eddy current (HFEC) inspection for any cracking on the left-hand...: Perform a high frequency eddy current (HFEC) inspection for any cracking on the left-hand and right-hand... A321-111 and -131 airplanes; certificated in any category; manufacturer serial numbers 0259, 0260, 0264...
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Preliminary Flight Results of a Fly-by-throttle Emergency Flight Control System on an F-15 Airplane
Burcham, Frank W., Jr.; Maine, Trindel A.; Fullerton, C. Gordon; Wells, Edward A.
1993-01-01
A multi-engine aircraft, with some or all of the flight control system inoperative, may use engine thrust for control. NASA Dryden has conducted a study of the capability and techniques for this emergency flight control method for the F-15 airplane. With an augmented control system, engine thrust, along with appropriate feedback parameters, is used to control flightpath and bank angle. Extensive simulation studies were followed by flight tests. The principles of throttles only control, the F-15 airplane, the augmented system, and the flight results including actual landings with throttles-only control are discussed.
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STUDY ABOUT THE STABILITY AND CONTROL OF A ROTOR AIRPLANE
Stafy, Victor; Neto, Aristeu Silveira
2017-01-01
On this paper is studied the stability and control of a Rotor Airplane, more specifically a MAV (Micro Air Vehicle) and how works the dynamics of flight of this unusual configuration of aircraft. It’s discussed the impact of the gyroscopic effect on stability (mainly lateral and directional stability) and was found the best feasible configuration of the stability surface, but the project of the stabilizers was limited to lifting surfaces that use airfoil sections, the possibility of a very un...
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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)
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Barnes, Jason W.; Lemke, Lawrence; Foch, Rick; McKay, Christopher P.; Beyer, Ross A.; Radebaugh, Jani; Atkinson, David H.; Lorenz, Ralph D.; LeMouelic, Stephane; Rodriguez, Sebastien;
2011-01-01
We describe a mission concept for a stand-alone Titan airplane mission: Aerial Vehicle for In-situ and Airborne Titan Reconnaissance (AVIATR). With independent delivery and direct-to-Earth communications, AVIATR could contribute to Titan science either alone or as part of a sustained Titan Exploration Program. As a focused mission, AVIATR as we have envisioned it would concentrate on the science that an airplane can do best: exploration of Titan's global diversity. We focus on surface geology/hydrology and lower-atmospheric structure and dynamics. With a carefully chosen set of seven instruments-2 near-IR cameras, 1 near-IR spectrometer, a RADAR altimeter, an atmospheric structure suite, a haze sensor, and a raindrop detector-AVIATR could accomplish a significant subset of the scientific objectives of the aerial element of flagship studies. The AVIATR spacecraft stack is composed of a Space Vehicle (SV) for cruise, an Entry Vehicle (EV) for entry and descent, and the Air Vehicle (AV) to fly in Titan's atmosphere. Using an Earth-Jupiter gravity assist trajectory delivers the spacecraft to Titan in 7.5 years, after which the AVIATR AV would operate for a 1-Earth-year nominal mission. We propose a novel 'gravity battery' climb-then-glide strategy to store energy for optimal use during telecommunications sessions. We would optimize our science by using the flexibility of the airplane platform, generating context data and stereo pairs by flying and banking the AV instead of using gimbaled cameras. AVIATR would climb up to 14 km altitude and descend down to 3.5 km altitude once per Earth day, allowing for repeated atmospheric structure and wind measurements all over the globe. An initial Team-X run at JPL priced the AVIATR mission at FY10 $715M based on the rules stipulated in the recent Discovery announcement of opportunity. Hence we find that a standalone Titan airplane mission can achieve important science building on Cassini's discoveries and can likely do so within
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Analysis of an NPP Structure subjected to Vibrations Induced from Airplane Crashes
International Nuclear Information System (INIS)
Noh, Sang Hoon; Kim, Yong Soo; Kim, Chong Hak
2009-01-01
After the terrorists' attacks with civilian airplanes on September 11, 2001, special attention has been paid to the potential for an airplane crash into a Nuclear Power Plant (NPP) as a man-made hazard. An airplane crash (APC) into an NPP has the potential to damage the roofs and walls of these structures, as well as other systems and components such as pipelines, electric motors, power supplies, power cables of electricity transmission that are important for safety. Therefore, an evaluation of the structural response to an APC is important for the safety of NPPs to be confirmed. A structural integrity analysis was carried out focusing on the vibration effects of an APC on an NPP structure. The NPP structure under consideration has been conceptually redesigned based on APR1400 to have double containments for the purpose of a feasibility study to meet European requirements. The finite element method was used for the structural analysis of the NPP, and the computer code ABAQUS was employed for this analysis
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76 FR 79560 - Airworthiness Directives; Airbus Airplanes
2011-12-22
... off, a transient loss of elevator control associated with a temporary incorrect flight control law... airplane flight manual. We are proposing this AD to prevent movement of the elevators to zero position... reset does not occur thanks to the introduction of second electrical power supply to FCPC3 from 1PP bus...
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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...
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78 FR 27315 - Airworthiness Directives; The Boeing Company Airplanes
2013-05-10
.... Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New... pedal was loose. Another operator reported a fractured bolt during the airplane pushback. When the...
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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
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Ageing airplane repair assessment program for Airbus A300
Gaillardon, J. M.; Schmidt, HANS-J.; Brandecker, B.
1992-01-01
This paper describes the current status of the repair categorization activities and includes all details about the methodologies developed for determination of the inspection program for the skin on pressurized fuselages. For inspection threshold determination two methods are defined based on fatigue life approach, a simplified and detailed method. The detailed method considers 15 different parameters to assess the influences of material, geometry, size location, aircraft usage, and workmanship on the fatigue life of the repair and the original structure. For definition of the inspection intervals a general method is developed which applies to all concerned repairs. For this the initial flaw concept is used by considering 6 parameters and the detectable flaw sizes depending on proposed nondestructive inspection methods. An alternative method is provided for small repairs allowing visual inspection with shorter intervals.
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Toll, T. A.
1980-01-01
A parametric analysis was made to investigate the relationship between current cargo airplanes and possible future designs that may differ greatly in both size and configuration. The method makes use of empirical scaling laws developed from statistical studies of data from current and advanced airplanes and, in addition, accounts for payload density, effects of span distributed load, and variations in tail area ratio. The method is believed to be particularly useful for exploratory studies of design and technology options for large airplanes. The analysis predicts somewhat more favorable variations of the ratios of payload to gross weight and block fuel to payload as the airplane size is increased than has been generally understood from interpretations of the cube-square law. In terms of these same ratios, large all wing (spanloader) designs show an advantage over wing-fuselage designs.