Rotary kinetic fluid motors or pumps – With inspection – signaling – indicating or measuring means
Patent
1978-05-22
1980-03-18
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
With inspection, signaling, indicating or measuring means
60 3914M, 415123, 415167, 73116, F01D 2534
Patent
active
041937392
ABSTRACT:
A device for turning the rotor of a gas turbine engine for purposes of inspection has a tubular rod projecting through the casing of the engine into proximity with rotor blades of the engine. The rod has a nozzle directing a jet of air onto the blades to turn the rotor. The rod is movable axially so that when it is desired to stop the rotor the free end of the rotor engages an annular surface of the rotor to exert a braking force thereon. The rod moves under the action of a spring. Air to the nozzle is supplied through a hand-operated valve and the air supply is taken through a cylinder having a piston connected to the rod. The arrangement is such that when the valve is opened to feed the nozzle and turn the rotor, the air pressure moved the piston in the sense of retracting the rod from the braking position.
REFERENCES:
patent: 2749023 (1956-06-01), Lewis
patent: 3238721 (1966-03-01), Brandes et al.
Powell Jr. Everette A.
Rolls-Royce Limited
Trausch, III A. N.
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