Results 31 to 40 of about 847,370 (336)
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
doaj +1 more source
, 2020 Helicopter engines are often mounted atop the fuselage to keep the aircraft footprint small and optimal for operations. As a result, hot gases produced by the engines may inadvertently impinge upon the tail boom or dissipate inefficiently that ...
Zhen Wei Teo +4 more
semanticscholar +1 more source
Study of super/turbocharger system for helicopter diesel engine
Diagnostyka, 2021 The article demonstrates a rational scheme of the supercharging system in a helicopter diesel engine with a power of 100 kW, regardless of the flight altitude, and proposes a method for assessing the power losses for a diesel engine depending on the ...
Andriy Prokhorenko +4 more
doaj +1 more source
The effect of heat recovery on the optimal values of helicopter turboshaft engine parameters
Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020 Recent studies related to fuel economy in air transport conducted in our country and abroad show that the use of recuperative heat exchangers in aviation gas turbine engines can significantly, by up to 20...30%, reduce fuel consumption.
H. H. Omar +3 more
doaj +1 more source
DIAGNOSTIC MODEL OF HELICOPTER TURBOSHAFT ENGINE
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences, 2023 The article presents a qualitative assessment of the impact on the engine components characteristics of the malfunction occurrence in the flow part of the aviation gas turbine engines, which lead to changes in its geometry. Using the example of a compressor, it is shown that when defects appear in it, two of its characteristics are deformed: efficiency
V.P. Kazhaev, D.Y. Kiselev, Y.V. Kiselev
openaire +1 more source
Performance assessment of simple and modified cycle turboshaft gas turbines
Propulsion and Power Research, 2013 This paper focuses on investigations encompassing comparative assessment of gas turbine cycle options. More specifically, investigation was carried out of technical performance of turboshaft engine cycles based on existing simple cycle (SC) and its ...
Barinyima Nkoi +2 more
doaj +1 more source
Sand Ingestion Behavior of Helicopter Engines During Hover in Ground Effect
AerospaceSand ingestion exerts significant effects on the performance of helicopter engines, and it is imperative to investigate this phenomenon. In this study, the mechanisms of engine sand ingestion during helicopter hover in ground effect are analyzed. Firstly,
Qiang Li +3 more
doaj +1 more source
Variable-speed rotor helicopters: Performance comparison between continuously variable and fixed-ratio transmissions [PDF]
, 2016 Variable speed rotor studies represent a promising research field for rotorcraft performance improvement and fuel consumption reduction. The problems related to employing a main rotor variable speed are numerous and require an interdisciplinary approach.
Benini, Ernesto +1 more
core +1 more source
Analysis influence of engine’s dynamic characteristics on helicopter’s flight quality
Xibei Gongye Daxue XuebaoThis article analyses the influence of an engine’s dynamic characteristics on a helicopter’s flight quality during hover/low speed forward flight. Firstly, based on the power matching relationship between the engine and the helicopter, a helicopter ...
WEI Yuan, CHEN Renliang
doaj +1 more source
Performance of small-scale aero-derivative industrial gas turbines derived from helicopter engines
Propulsion and Power Research, 2013 This paper considers comparative assessment of simple and advanced cycle small-scale aero-derivative industrial gas turbines derived from helicopter engines.
Barinyima Nkoi +2 more
doaj +1 more source