Unloaded lift offset rotor system for a helicopter

Details Unloaded lift offset rotor system for a helicopter Unloaded lift offset rotor system for a helicopter

2007-09-04

2007-09-04

Luu, Teri Pham (Department: 3644)

Aeronautics and astronautics

Aircraft, heavier-than-air

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

C244S017250, C244S017130, C244S017230, C416S124000, C416S129000, C416S120000, C416S130000, C416S19800R, C416S20100A

Reexamination Certificate

active

11163414

ABSTRACT:
A rotor system (12) for a helicopter (10) includes a rotating shaft (82). A gimbaled hub assembly (56) is coupled to the rotating shaft (82). Rotating blades (24) and non-rotating blades (33) are coupled to the gimbaled hub assembly (56). The non-rotating blades (33) provide lift for the helicopter (10) in forward flight unloading the rotating blades. The rotating and non-rotating blades (24, 33) provide equal and opposite rolling moments for lift offset operation.

REFERENCES:
patent: 2404014 (1946-07-01), Thornes
patent: 3409249 (1968-11-01), Bergquist et al.
patent: 5240204 (1993-08-01), Kunz
patent: 6062508 (2000-05-01), Black

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