Helicopter gimbal rotor

Details Helicopter gimbal rotor Helicopter gimbal rotor

1984-09-27

1986-04-08

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Nonmetallic resilient mounting

416138, 416140, 416148, B64C 2735

Patent

active

045809453

ABSTRACT:
Rotor tilt is permitted by two spherical elastomeric bearings, one above a hub member and one below, that have coincident centers at a tilt point (P) on the rotorshaft axis which is below the rotor plane. Positive rotor thrust is reacted by the upper bearing and negative rotor thrust is reacted by the lower bearing. Techniques for assembling the rotor system, precompressing the bearings, and limiting tilt are also disclosed.

REFERENCES:
patent: 2606621 (1952-08-01), Neale
patent: 2633925 (1953-04-01), Bates
patent: 2648387 (1953-08-01), Doman
patent: 2861641 (1958-11-01), Bensen
patent: 3288226 (1966-11-01), Lemont et al.
patent: 3412680 (1968-11-01), Girard
patent: 4111605 (1978-09-01), Roman et al.
patent: 4115031 (1978-09-01), Drees et al.
patent: 4323332 (1982-04-01), Fradenburgh
patent: 4326834 (1982-04-01), Ostrowski
patent: 4477225 (1984-10-01), Burkam

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