Calcia magnesia alumino silicate (CMAS) corrosion attack on thermally sprayed thermal barrier coatings: a comprehensive review. [PDF]
Npj Mater DegradNair RB, Brabazon D.
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Helicopter turboshaft engines combustion chamber monitoring neural network method
MeasurementSerhii Vladov +5 more
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Design and CFD analysis of a regenerator for a turboshaft helicopter engine
Aerospace Science and Technology, 2008A possible provision of a regenerator is examined with an attainable effectiveness, least pressure drop and small weight for a modified veteran turboshaft helicopter engine. From the thermal analysis it is known that considerable amount of heat energy exists in the turbine exhaust gas.
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A turboshaft engine NMPC scheme for helicopter autorotation recovery maneuver
Aerospace Science and Technology, 2018Abstract Fast response for turboshaft engine plays an important role in shaping sound helicopter maneuver ability during some typical violent maneuvers like autorotation power recovery. An engine NMPC (nonlinear model predictive control), integrated with flight predictive information, is proposed to obtains better engine response speed and reduces ...
Qiangang Zheng, Haibo Zhang
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Exergetic, sustainability and environmental assessments of a turboshaft engine used on helicopter
Energy, 2023Özgur Balli
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Helicopter Turboshaft Engine Database as a Conceptual Design Tool
SAE International Journal of Engines, 2021<div>Many interconnected parameters are involved in the helicopter turboshaft engine’s design, implying numerous limitations on the design process. These parameters include the key parameters such as weight, dimensions, power, specific fuel consumption, combustion temperature, air mass flow rate, and compressor pressure ratio, all of which ...
Farshid Bazmi, Afshin Rahimi
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Calculation of Air Velocity on the Helicopter Turboshaft Engines Inlet
SAE International Journal of Engines, 2021<div>The turboshaft engine performance is closely related to the helicopter’s design, and because of its location beneath the helicopter’s main rotor, it has unique features that distinguish it from other families of gas turbine engines.
Farshid Bazmi, Afshin Rahimi
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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.
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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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Three-Dimensional Sound Directivity around a Helicopter Turboshaft Engine
Journal of the American Helicopter Society, 2012Turboshaft engines can be the main source of noise due to a helicopter at takeoff. Some new silencing designs of the inlets and of the ejector were tested on a Turbomeca Arrius 2B2 engine in an open-air static facility. Intake and exhaust are not axisymmetric, and conventional directivity patterns of sound field on a horizontal arc of circle are ...
Helene Gounet, Serge Lewy
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