Rotor drive and control system for a high speed rotary wing...

Details Rotor drive and control system for a high speed rotary wing... Rotor drive and control system for a high speed rotary wing...

2011-06-28

2011-06-28

Lee, Benjamin P (Department: 3641)

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

C244S017230, C244S060000

Reexamination Certificate

active

07967239

ABSTRACT:
A drive system for a high speed rotary-wing aircraft includes a combiner gearbox in meshing engagement with a main gearbox. The combiner gearbox is driven by one or more engines such that a main rotor system and a translational thrust system are driven thereby. The engine drives the combiner gearbox and thus the main gearbox through an overrunning clutch. The drive system permits the main rotor system RPM to be controlled by offloading power to the translational thrust system during a high speed flight profile.

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