Swashplate drive redundancy system

Details Swashplate drive redundancy system Swashplate drive redundancy system

1978-12-21

1981-06-23

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to fixed actuator

416 1, 416 47, 416162, B64C 2774

Patent

active

042748089

ABSTRACT:
A helicopter having a mast 50 which drives a rotor and which is driven from a transmission 16 has a swashplate 10 individually linked to pitch horns on each rotor blade. At least four control channels 11-15 are coupled to the swashplate. Three channels may control the attitude and position of the swashplate. The control channels 11-15 are actuated in response to pilot commands transmitted by means including mechanical, optical or electrical systems. A separate power unit 21-25, 31-35 supplies each control channel. Each power unit is directly driven by the transmission 16. Means 11c-15c applies control of the swashplate 10 from among the control channels 11-15.

REFERENCES:
patent: 2919081 (1959-12-01), Schon
patent: 2978038 (1961-04-01), Doman et al.
patent: 3256780 (1966-06-01), Riley et al.
patent: 3570786 (1971-03-01), Lewis
patent: 3625632 (1971-12-01), Casterline
patent: 3767323 (1973-10-01), Zech
patent: 3790108 (1974-02-01), Bock
Flight International (6/3/78), pp. 1696-1697.

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