Title:
ROTARY WING AIRCRAFT SUPPLEMENTARY POWER DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO2000068075
Kind Code:
A8
Abstract:
A supplementary power drive system for providing additional power to the rotor drive system of rotary wing aircraft powering the lifting rotor and tail mounted torque compensating rotor (13) in a manner as avoids overloading the designed capacity of the main engine powered transmission (12). The supplementary power system, utilizing the power of a normally installed auxiliary power plant as a source of additional power, bypasses the transmission (12) in adding the additional power to the rotor system and directs it first to the tail rotor (13) in an amount as the tail rotor (13) can absorb under the imposed flight mode with remaining power being available to drive the main rotor. This is accomplished by incorporating a power transfer unit, preferably a one-stage gear train (22), that delivers power from the auxiliary power plant through the tail rotor drive system (14) selectively first to the tail rotor (13) and then the transmission (12).
Inventors:
PIASECKI FRANK N (US)
Application Number:
PCT/US2000/005072
Publication Date:
July 25, 2002
Filing Date:
February 22, 2000
Export Citation:
Assignee:
PIASECKI FRANK N (US)
International Classes:
B64C27/14; B64C27/26; B64C27/82; (IPC1-7): B64C27/12
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