Rotor control system

Details Rotor control system Rotor control system

1986-01-24

1987-07-07

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Control of drive brake or clutch

416143, 416170R, 416169R, B64C 2724

Patent

active

046784012

ABSTRACT:
A helicopter rotor control system (13) including a stop azimuth controller (32) for establishing the value of a deceleration command (15') to a deceleration controller (23), a transition azimuth predictor (41) and a position reference generator (55), which are effective during the last revolution of said rotor (14) to establish a correction indication (38) to adjust the deceleration command (15') to ensure that one of the rotor blades (27) stops at a predetermined angular position.

REFERENCES:
patent: 3698662 (1972-10-01), Rostad
patent: 3986686 (1976-10-01), Girard
patent: 4342378 (1982-08-01), Hmelovsky
patent: 4354234 (1982-10-01), MacLennan et al.
patent: 4374350 (1983-02-01), Kohzai et al.
patent: 4376979 (1983-03-01), Fowler et al.
patent: 4394889 (1983-07-01), Gray

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