| 摘要 |
A supplementary power drive system for providing additional power to the rot or 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 availabl e 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).</SD OAB> |
