Bearingless tail rotor for helicopters

Details Bearingless tail rotor for helicopters Bearingless tail rotor for helicopters

1979-04-24

1981-12-22

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416141, 416230, B64C 2738

Patent

active

043068375

ABSTRACT:
A helicopter tail rotor structure includes a thin, flat, tension-bearing strap of fibers extending spanwise, and is to be centrally secured by a hub to a helicopter tail mast. Flex sections are formed inboard of substantially equally divided portions of said fibers which extend as top and bottom blade spars from the outboard margins of the flex sections. Preferably, the planes of the flex sections and the planes of the spars are oriented at predetermined nose-up twist angles, one relative to the other.

REFERENCES:
patent: 3457997 (1969-07-01), Mackenzie et al.
patent: 3754840 (1973-08-01), Zincone
patent: 3765267 (1973-10-01), Bourquardez et al.
patent: 3782856 (1974-01-01), Salkind et al.
patent: 3790302 (1974-02-01), Pascher
patent: 3874815 (1975-04-01), Baskin
patent: 3880551 (1975-04-01), Kisovec
patent: 3999887 (1976-12-01), McGuire
patent: 4047839 (1977-09-01), Ferris et al.
patent: 4077740 (1978-03-01), Sobey
patent: 4110056 (1978-08-01), Stevenson

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