Results 201 to 210 of about 44,118 (256)

The Licensing of Helicopter Maintenance Engineers

The Journal of the Helicopter Association of Great Britain, 1953
I should like to commence by referring to the remarks made during the all-day discussion on Helicopter Maintenance organised by your Association in co-operation with the Society of Licensed Aircraft Engineers, which was held on 21st October, 1950 Reference was then made to the practical difficulties of drafting the requirements for helicopter licensing
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Failure analysis of a crankshaft of a helicopter engine

Engineering Failure Analysis, 2019
Abstract A detailed analysis of a crankshaft failure belonging to a helicopter engine is presented. The main objective of this work was to analyze the characteristics of the failure and determine the root cause of the failure of the crankshaft. In order to determine the causes of the crankshaft failure, a material analysis was performed, followed by ...
V. Infante, M. Freitas, M. Fonte
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HELICOPTER ENGINE MOUNTING

2017
<div class="section abstract"> <div class="htmlview paragraph">This Aerospace Information Report (AIR) reviews the requirements to be satisfied by the engine mount systems and provides an outline of some suitable methods. Factors such as drive shaft alignment, engine expansion, mount crashworthiness, vibration isolation, and other effects
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Acceleration Performance of Helicopter Engines

Journal of Engineering for Gas Turbines and Power, 1987
The desirability of good acceleration behavior from helicopter gas turbine engines is discussed in the context of the increasing demand for helicopter maneuverability and safety. Features which result in improved engine handling qualities are discussed and reference is made to some analytical techniques which may be employed to assist in obtaining the ...
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The Control of Turboshaft Engines in Helicopters

SAE Technical Paper Series, 1965
<div class="htmlview paragraph">Written from the point of view of the helicopter constructor, this paper attempts a comprehensive review of the experience accumulated by airframe, engine, and control systems designers in the United Kingdom in the course of developing a wide variety of first generation turbine engined helicopters.</div> < ...
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Exergetic Investigation of a Turboshaft Helicopter Engine Related to Engine Power

SAE International Journal of Aerospace, 2020
<div>Turboshaft engines, one of the classifications of the helicopters, combine the core engine and fan and consume fossil fuels. Emissions, produced by the fossil fuels, cause global warming and environmental pollution, such as ecological, human health. To improve helicopter capability, energy is the first point of improvement.
Elif Koruyucu, Onder Altuntas, T. Hikmet Karakoc   +2 more
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HELICOPTER TURBINE ENGINE WASH

2017
<div class="section abstract"> <div class="htmlview paragraph">Engines subject to dust, industrial pollution, saltwater contamination or other chemically laden atmosphere (including pesticides and herbicides) lose performance due to deposits of contaminants on surfaces in the aidgas flow path.
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Heavy Lift Helicopter Main Engines

SAE Technical Paper Series, 1973
<div class="htmlview paragraph">The Heavy Lift Helicopter (HLH) is the airborne component of a container ship and helicopter logistics system. The U.S. Army initiated a program for development of advanced-technology components (ATC) for the HLH in June 1971 to reduce the risk associated with future procurement of an air vehicle.
David R. Woodley, William S. Castle
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Mechanical Engineering Aspects of Helicopter Design

Proceedings of the Institution of Mechanical Engineers, Part D: Transport Engineering, 1985
The work of the early pioneers which led to the evolution of the current helicopter configurations is briefly reviewed. The major mechanical elements of the helicopter are then identified: the engine, transmission and blades analogous to the engine, transmission and wheels of a road vehicle.
Sir Basil Biackwell, V A B Rogers
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HELICOPTER ENGINE-ROTOR SYSTEM COMPATIBILITY

2017
<div class="section abstract"> <div class="htmlview paragraph">This SAE Aerospace Recommended Practice (ARP) recommends a methodology to be used for the design, analysis and test evaluation of modern helicopter gas turbine propulsion system stability and transient response characteristics. This methodology utilizes the computational power
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