Results 81 to 90 of about 6,275 (223)

Airworthiness considerations [PDF]

Guidance is provided for the airworthiness approval of both annunciation only and annunciation with guidance airborne windshear warning systems. Characteristics of a comprehensive certification plan, the criticality of certain system failure cases for ...
Stoer, Ray
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Effects of Different Materials and Structures on Mechanical Properties of Hail Used in Aviation Testing

Aerospace
Hail absorption test of aeroengine is one of the important components of airworthiness certification. The accurate test data are closely related to the density and mechanical properties of the artificial hail used in airworthiness tests.
Yewei Liu, Lifen Zhang, Xin Ge, Zhenxia Liu   +3 more
doaj   +1 more source

Ground-simulation investigations of VTOL airworthiness criteria for terminal-area operations [PDF]

Several ground-based simulation experiments undertaken to investigate concerns related to tilt-rotor aircraft airworthiness were conducted. The experiments were conducted on the National Aeronautics and Space Administration (NASA) Ames Research Center's ...
Alderete, T. S., Chung, W. W., Decker, W. A., Harper, P. J. G., Lebacqz, J. V., Scott, B. C.   +5 more
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Loss of control testing of light aircraft and a cost effective approach to flight test [PDF]

, 2010
Copyright @ The Society of Flight Test EngineersLoss of control in Visual Meteorological Conditions (VMC) is the most common cause of fatal accidents involving light aircraft in the UK and probably worldwide.
Bromfield, MA, Gratton, GB
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NASA/FAA experiments concerning helicopter IFR airworthiness criteria [PDF]

A sequence of ground and flight simulation experiments was conducted as part of a joint NASA/FAA program to investigate helicopter instrument flight rules (IFR) airworthiness criteria.
Lebacqz, J. V.
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Ultra-heavy vertical lift system: The Heli-Stat [PDF]

, 1975
A hybrid VTOL airship which is combined with helicopters is evaluated. The static lift of the airship supports approximately the full empty weight of the entire assembly.
Piasecki, F. N.
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Characterization of Thermal Runaway of Lithium Ternary Power Battery in Semi-Confined Space

Energies
In some new energy aircraft powered by lithium-ion batteries (LIBs), the LIBs operate in semi-confined spaces. Therefore, studying the thermal runaway (TR) characteristics of LIBs in such spaces is significant to safety research of new energy aircraft ...
Hai Xu, Chenghao Hou, Po Hu, Yanhe Chen
doaj   +1 more source

Certification aspects of airplanes which may operate with significant natural laminar flow [PDF]

Recent research by NASA indicates that extensive natural laminar flow (NLF) is attainable on modern high performance airplanes currently under development. Modern airframe construction methods and materials, such as milled aluminum skins, bonded aluminum
Gabriel, Edward A., Tankesley, Earsa L.
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Surrogate Models and Related Combustion Reaction Mechanisms for a Coal-Derived Alternative Jet Fuel and Its Blends with a Traditional RP-3

Aerospace
Jet fuel from direct coal liquefaction (DCL) is an important alternative kerosene and represents a high-performance fuel for specific applications in civil applications.
Quan-De Wang, Lan Du, Bi-Yao Wang, Qian Yao, Jinhu Liang, Ping Zeng, Zu-Xi Xia   +6 more
doaj   +1 more source

Certificação de aeronavegabilidade das aeronaves da Força Aérea Portuguesa [PDF]

, 2008
A certificação de aeronavegabilidade constitui-se como o selo de garantia de que as aeronaves estão em condições de voar em segurança, uma vez que são mantidas por pessoal qualificado, com equipamento adequado e nos períodos previstos, podendo-se ...
Inácio, Jorge
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