Historical overview of V/STOL aircraft technology [PDF]
The requirements for satisfactory characteristics in several key technology areas are discussed and a review is made of various V/STOL aircraft for the purpose of assessing the success or failure of each design in meeting design requirements.
Anderson, S. B.
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Review of the transmissions of the Soviet helicopters [PDF]
A review of the following aspects of Soviet helicopter transmissions is presented: transmitted power, weight, reduction ratio, RPM, design configuration, comparison of different type of manufacturing methods, and a description of the materials and ...
Chaiko, Lev I.
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Design description of a microprocessor based Engine Monitoring and Control unit (EMAC) for small turboshaft [PDF]
Research programs have demonstrated that digital electronic controls are more suitable for advanced aircraft/rotorcraft turbine engine systems than hydromechanical controls.
Baez, A. N.
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Defining Gas Turbine Engine Performance Requirements for the Large Civil TiltRotor (LCTR2) [PDF]
Defining specific engine requirements is a critical part of identifying technologies and operational models for potential future rotary wing vehicles.
Snyder, Christopher A.
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Rotorcraft contingency power study [PDF]
Twin helicopter engines are often sized by the power requirement of a safe mission completion after the failure of one of the two engines. This study was undertaken for NASA Lewis by General Electric Co.
Davis, R. H. +3 more
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Calcia magnesia alumino silicate (CMAS) corrosion attack on thermally sprayed thermal barrier coatings: a comprehensive review. [PDF]
Npj Mater DegradNair RB, Brabazon D.
europepmc +1 more source
High Speed Balancing Applied to the T700 Engine [PDF]
The work performed under Contracts NAS3-23929 and NAS3-24633 is presented. MTI evaluated the feasibility of high-speed balancing for both the T700 power turbine rotor and the compressor rotor.
Lee, C., Martin, M., Walton, J.
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Multi-objective optimization and system evaluation of recuperated helicopter turboshaft engines
Energy, 2020Abstract Targeting higher efficiency and lower emissions, the employment of recuperators in helicopters is well recognized as an attractive technical strategy to enhance the operational capabilities. Primary surface recuperator (PSR) is proposed for such applications, as its favorable characteristics of good heat transfer performance and compact ...
Chengyu Zhang, Volker Gümmer
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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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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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