Hingeless helicopter rotor with elastic gimbal hub

Details Hingeless helicopter rotor with elastic gimbal hub Hingeless helicopter rotor with elastic gimbal hub

1979-12-21

1982-04-06

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416141, 416102, 416148, B64C 2752

Patent

active

043233325

ABSTRACT:
A hingeless helicopter rotor including an aerodynamically shaped hub having a flexible diaphragm as its bottom wall, which diaphragm is connected to the rotor drive shaft and is elastically deformable in response to blade loading to tilt in any direction with respect to the axis of rotation, and further having at least three equally spaced helicopter blades projecting from and supported from within the hub for rotation therewith and for flexing with respect thereto in response to blade loading so that the flexible hub and the blades coact to produce a low equivalent offset rotor and minimized Coriolis effect.

REFERENCES:
patent: 2210190 (1940-08-01), Stanley
patent: 2961051 (1960-11-01), Wilford
patent: 3130942 (1964-04-01), Fradenburg
patent: 3228479 (1966-01-01), Nagler
patent: 3804552 (1974-04-01), Covington
patent: 3933324 (1976-01-01), Ostrowski
patent: 4047839 (1977-09-01), Ferris et al.
patent: 4189283 (1980-02-01), McCoubrey

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