Results 11 to 20 of about 1,707 (248)
Analysis of unstable mode of a free gas turbine of turbo-compressors engines [PDF]
MATEC Web of Conferences, 2021 This paper analyses unstable mode of a free gas turbine of turboshaft helicopter engine TV3-117. The analysis is focused on the conditions of this phenomenon and the possibilities of its solution in a turboshaft helicopter engine and an industrial ...
Hocko Marián, Al-Rabeei Samer
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Preliminary investigation on the self-propulsion performance of wedge-shaped functional surfaces [PDF]
Journal of Intelligent Manufacturing and Special Equipment, 2022 Purpose – The purpose of this paper is to artificially construct a functional surface with self-propulsion flow characteristics for the directional transportation of propellant in surface tension tanks.
Qianqian Li +5 more
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Aerospace, 2023 This study assesses the influence of engine dynamic characteristics on helicopter handling quality during hover and low-speed forward flight. First, we construct the helicopter–engine coupling model (HECM) based on the power-matching relationship between
Yuan Wei +3 more
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Forming of turboshaft engine mathematical model
Авіаційно-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
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STUDY ON SAFETY TECHNOLOGY SCHEME OF THE UNMANNED HELICOPTER [PDF]
The 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
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Machines, 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
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Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters
IEEE 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
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An Advanced Helicopter Engine Control System [PDF]
Aircraft 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.
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Comparative Study of Helicopter Engine Particle Separators [PDF]
Journal of Aircraft, 2014 Particle separators are fitted to helicopter engine intakes to remove potentially harmful dust from the influent air. Their use is necessary in desert environments to eliminate the risk of rapid engine wear and subsequent power deterioration. However, their employment is concomitant with an inherent loss in inlet pressure and, in some cases, auxiliary ...
Filippone, Antonino, Bojdo, Nicholas
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Impact of dust erosion on the reduction of axial compressor efficiency of a turboshaft engine and on the stability of its operation [PDF]
MATEC Web of Conferences, 2022 This paper aimed to solve the impact of operational abrasive wear on the rotor blades of the axial compressor of the turboshaft engine on the decrease in its total compression efficiency ηCt and its transition into unstable work mode (surge).
Hocko Marián, Al-Rabeei Samer
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