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Definition and analytical evaluation of a power management system for tilt-rotor aircraftThe paper reviews the special design criteria which apply to power management in a tilt-rotor aircraft. These include the need for accurate and fast control of rpm and thrust, while accounting for the dynamic interactions between rotor systems caused by cross-shafting and aircraft lateral/directional response. The power management system is also required to provide acceptable high speed sensitivity to longitudinal turbulence. It is shown that the criteria can best be met using a single governor adjusting the collective pitch by an amount proportional to a combination of the average rpm and the integral of the average rpm of the two rotors. This system is evaluated and compared with other candidate systems in hover and cruise flight.
Document ID
19790034158
Document Type
Conference Proceedings
Authors
Morris, J. J. (Boeing Vertol Co. Philadelphia, PA, United States)
Alexander, H. R. (Boeing Vertol Co. Philadelphia, Pa., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
AIRCRAFT PROPULSION AND POWER
Report/Patent Number
AHS 78-48
Meeting Information
In: American Helicopter Society, Annual National Forum(Washington, DC)
Funding Number(s)
CONTRACT_GRANT: NAS2-6505
CONTRACT_GRANT: NAS2-6598
Distribution Limits
Public
Copyright
Other