Results 21 to 30 of about 847,370 (336)

Forming of turboshaft engine mathematical model

open access: yesАвіаційно-космічна техніка та технологія, 2023
The subject of the study is the process of forming a mathematical model (MM) of a turboshaft gas turbine engine and a twin-engine helicopter power plant, which provides the determination of parameters of the working process in steady and transient ...
Sergiy Yepifanov, Oleksii Bondarenko
doaj   +1 more source

STUDY ON SAFETY TECHNOLOGY SCHEME OF THE UNMANNED HELICOPTER [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Nowadays the unmanned helicopter is widely used for its' unique strongpoint, however, the high failure rate of unmanned helicopter seriously limits its further application and development.
Z. Lin   +4 more
doaj   +1 more source

Study on the Engagement Characteristics and Control Strategy of High Speed Difference Dry Friction Clutch

open access: yesMachines, 2023
In the short/vertical take-off and landing aircraft propulsion system, the vertical take-off/landing and rapid flight are switched through the engagement and disconnection of the dry friction clutch. The smooth and rapid connection of the friction clutch
Chu Zhu   +3 more
doaj   +1 more source

Chemical characterization of combustion engine exhaust and assessment of helicopter deck operator occupational exposures on an offshore frigate class ship

open access: yesJournal of Occupational and Environmental Hygiene, 2023
Diesel engine exhaust (DE) consists of a complex mixture of gases and aerosols, originating from sources such as engines, turbines, and power generators.
Stine Eriksen Hammer   +7 more
semanticscholar   +1 more source

Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters

open access: yesIEEE Access, 2021
The exhaust of turboshaft engines contains a big amount of waste heat but does not provide propulsion power to the helicopter. Reusing the heat can increase fuel efficiency and reduce carbon emissions of the engine.
Yuxue Ge, Yuhao Wei, Qian Zhao, Yang Pei
doaj   +1 more source

Maneuverability assessment of a compound helicopter configuration [PDF]

open access: yes, 2016
The compound helicopter design could potentially satisfy the new emerging requirements placed on the next generation of rotorcraft. The main benefit of the compound helicopter is its ability to reach speeds that significantly surpass those of the ...
Ferguson, Kevin, Thomson, Douglas
core   +1 more source

An Advanced Helicopter Engine Control System [PDF]

open access: yesAircraft Engineering and Aerospace Technology, 1982
The Amalgamation of Functions The requirements of the first engine controllers were primarily to satisfy the needs of the engine and, almost as an afterthought, to consider interface with the aircraft and the pilot. The latter resulted in the overwhelming plethora of “essential” ground test‐sets and cockpit instruments that we see today.
openaire   +1 more source

Simulation analysis of complex electromagnetic environment effect of helicopter engine

open access: yesJournal of Physics: Conference Series, 2020
With the improvement of equipment informatization, the adaptability of complex electromagnetic environment of airborne engine equipment is becoming increasingly important.
Qiuying Yan   +3 more
semanticscholar   +1 more source

An integrated methodology to assess the operational and environmental performance of a conceptual regenerative helicopter [PDF]

open access: yes, 2015
This paper aims to present an integrated multidisciplinary simulation framework, deployed for the comprehensive assessment of combined helicopter powerplant systems at mission level. Analytical evaluations of existing and conceptual regenerative engine
Ali, Fakhre   +2 more
core   +1 more source

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