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Operation limits analysis of PW206C turboshaft engine in manual mode  

Lee, Chang-Ho (한국항공우주연구원 스마트무인기개발사업단)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.4, 2008 , pp. 42-47 More about this Journal
Abstract
The power control system of Smart UAV is similar to the propeller pitch governing concept of turboprop aircraft. The pilot adjusts the engine power directly and the pitch governor controls the propeller pitch to maintain the propeller rotational speed. The electronic engine controller(EEC) of PW206C engine developed for helicopter is not fit for the power control concept of Smart UAV, and therefore the manual back-up system of PW206C engine is used for the engine power control of Smart UAV. Engine performance estimation program is used to predict the control range of power lever angle(PLA) according to the variation of engine output shaft speed, flight altitude and flight speed. These data provide a guide for the PLA control in manual mode operation.
Keywords
Gas Turbine Engine; Engine Power System Control; Turboshaft Engine Performance;
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  • Reference
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3 Joseph Schaeffer, Roger Alwang, and Mukund Joglekar, "V-22 Thrust Power Management Control Law Development," 47th Annual Forum of the American Helicopter Society, Phoenix, Arizona, 1991
4 PW206C Estimated Engine Performance Program (EEPP), Pratt&Whitney Canada, 1995