Tail rotor

Details Tail rotor Tail rotor

1988-03-31

1989-11-21

Powell,, Jr.

Fluid reaction surfaces (i.e., impellers)

Articulated, resiliently mounted or self-shifting impeller...

Resilient bias or mount

416115, 416123, 416141, 416148, B64C 2736

Patent

active

048818747

ABSTRACT:
A helicopter tail rotor (10, 130) includes a drive mast (12) having an axis of rotation (14). A first blade pair (20) is mounted for rotation about the drive mast (12). The first blade pair (20) includes a pitch change axis (54) perpendicularly disposed to the drive mast axis of rotation (14). A second blade pair (34) is mounted for rotation about the drive mast (12) and is spaced apart from and parallel disposed to the first blade pair (20). The second blade pair (34) includes a pitch change axis (60) parallel to the pitch change axis (54) of the first blade pair (20).

REFERENCES:
patent: 1912354 (1933-05-01), Pescara
patent: 2491042 (1949-12-01), Hayot
patent: 2755866 (1956-07-01), Apostolescu
patent: 2829721 (1954-10-01), Gebhard
patent: 3163231 (1964-12-01), Barnes et al.
patent: 3592559 (1971-07-01), Ward
patent: 3700351 (1972-10-01), Flux
patent: 3762669 (1973-10-01), Curci
patent: 3784319 (1974-01-01), Amer et al.
patent: 4104003 (1978-08-01), Mouille
patent: 8780022 (1908-02-01), Roper

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