Fluid reaction surfaces (i.e. – impellers) – With gyroscopic reference means for rotor control
Patent
1976-05-13
1977-05-24
Blix, Trygve M.
Fluid reaction surfaces (i.e., impellers)
With gyroscopic reference means for rotor control
244 1713, 244 79, 416 31, 416114, F01D 700
Patent
active
040252302
ABSTRACT:
The control system includes a sensing mechanism by which a true pure signal from flapping bending activity resulting from an external load force on a rotor blade in a rotor system is generated and fed back to a gyroscope which then precesses to return a correcting feathering motion to the rotor blade through a swashplate. Such generation is developed by the sensing mechanism which comprises a cantilevered beam or spring system secured at its one end to a fixed hub arm about which the blade feathers and having its other end operatively connected to the gyroscope. The gyroscope is positioned outside of a high force blade feathering loop and is independently sized from the rotor to which it is coupled. The system also provides for pilot command input to produce a control feathering motion to a pair of blades independently of the sensing means.
REFERENCES:
patent: 2439089 (1948-04-01), Hodson
patent: 2547721 (1951-04-01), Stalker
patent: 2550538 (1951-04-01), Doman
Blix Trygve M.
Corber Billy G.
Frankfort Charles E.
Lockheed Aircraft Corporation
Turner Lowell G.
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