Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive
Patent
1983-12-30
1987-06-09
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With control means responsive to non-cyclic condition...
Impeller rotation speed responsive
416 48, 416 50, B64C 1140
Patent
active
046717366
ABSTRACT:
Apparatus for controlling the pitch of the blades of a variable pitch, governor controlled, aerial propeller of which the pitch of the blades is variable between a coarse pitch limit and a fine pitch limit to match the torque of its prime mover has holding means (A) to maintain a forward thrust-generating blade pitch angle greater than the fine pitch limit with the prime mover idling as when an aircraft propelled by the propeller is taxi-ing whereby the propeller rotates more slowly, and hence more quietly, than it would otherwise. Preferably the holding means is effective by actuating a lock pitch solenoid valve (21) and an autofeather valve (18).
REFERENCES:
patent: 2722985 (1955-11-01), Biermann
patent: 2745500 (1956-05-01), Moore et al.
patent: 2756012 (1956-07-01), Moore et al.
patent: 2798563 (1957-07-01), Miller et al.
patent: 2809702 (1957-10-01), Lambeck et al.
patent: 2943686 (1960-07-01), Luiz et al.
patent: 2980188 (1961-04-01), Allen et al.
patent: 2986222 (1961-05-01), Bierman
patent: 3020007 (1962-02-01), Hine
patent: 3115938 (1963-12-01), Fischer et al.
patent: 3207227 (1965-09-01), Timewell
patent: 3387663 (1968-06-01), Barnes et al.
patent: 3389641 (1968-06-01), Barnes
patent: 3439745 (1969-04-01), Gaubis et al.
Search Report for the corresponding European Patent Office application, EP 84 30 0026.
Search Report for the corresponding British application, GB 8400069.
Powell Jr. Everette A.
Short Brothers Limited
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