Surface fatigue microcracks in turbocompressor blades of a turboshaft engine
Applied and Computational MechanicsRescue and military helicopters are sometimes exposed to extraordinary operating conditions. Such loading can cause non-standard fatigue defects with very specific types of failure.
Pavlas J., Růžička M., Slavík S.
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Power Level Influence on Architecture of Small Helicopter Turboshaft Engines [PDF]
Volume 2: Aircraft Engine; Marine; Microturbines and Small Turbomachinery, 1986 In the field of helicopter turboshaft engines, TURBOMECA is present in the range of 400 to 1 600 kW with four new engines, all under development. Naturally all these engines, born of a same general philosophy, have a pronounced ≪family likeness≫ from the general mechanical and aerodynamic point of view.
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Helicopter turboshaft engines combustion chamber monitoring neural network method
Measurement: Journal of the International Measurement ConfederationSerhii Vladov +2 more
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Method of Helicopter Turboshaft Engines’ Protection During Surge in Starting Mode
EnergiesThis article proposes a mathematical model for protecting helicopter turboshaft engines from surges, starting with fuel metering supply and maintaining stable compressor operation. The model includes several stages: first, fuel is supplied according to a specified program; second, an unstable compressor operation signal is determined based on the gas ...
Denys Baranovskyi +5 more
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The effect of heat recovery on the optimal values of helicopter turboshaft engine parameters
VESTNIK of Samara University. Aerospace and Mechanical Engineering, 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. Until recently, the use of cycles with heat recovery in aircraft gas turbine engines was restrained by a significant ...
H. H. Omar +3 more
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New opportunities for future, small, General-Aviation Turbine Engines (GATE) [PDF]
, 1980 The results of four independent contracted studies to explore the opportunities for future small turbine engines are summarized in a composite overview.
Strack, W. C.
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Mathematical modeling and control of a tilt-rotor aircraft
, 2015 This paper presents a novel model of large-size tilt-rotor aircraft, which can operate as a helicopter as well as being capable of transition to fixed-wing flight.
Cai, Lilong, Wang, Xinhua
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Research requirements for development of regenerative engines for helicopters [PDF]
The improved specific fuel consumption of the regenerative engine was compared to a simple-cycle turboshaft engine. The performance improvement and fuel saving are obtained at the expense of increased engine weight, development and production costs, and ...
Semple, R. D.
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Thermodynamic Optimization and Energy-Exergy Analyses of the Turboshaft Helicopter Engine
International Journal of ThermodynamicsEnergy demand is a critical contemporary concern, with significant implications for the future. While exploring renewable or sustainable energy sources offers potential solutions, optimizing energy consumption in existing power generation systems is also key.
Mehdi Siyahi +3 more
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Comparison of predicted engine core noise with proposed FAA helicopter noise certification requirements [PDF]
Calculated engine core noise levels, based on NASA-Lewis prediction procedures, for five representative helicopter engines are compared with measured total helicopter noise levels and proposed FAA helicopter noise certification requirements.
Groesbeck, D. E., Vonglahn, U.
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