Negative torque sensor for a gas turbine engine

Details Negative torque sensor for a gas turbine engine Negative torque sensor for a gas turbine engine

1975-04-04

1976-08-10

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

Responsive to condition of torque or thrust of device or...

416 36, 416160, B64C 1140

Patent

active

039738736

ABSTRACT:
A negative torque sensing and control system is disclosed which is useful with a differential geared or fixed shaft gas turbine engine of the type installed in general aviation aircraft. Negative torque is sensed in the gear train between the propeller and the aircraft engine whenever there is a powerplant failure. When the reverse torque exceeds a selected threshold, hydraulic valves are actuated which remove oil pressure from the pitch control mechanism of the propeller. Loss of oil pressure causes the propeller to assume the feathered position.

REFERENCES:
patent: 2751026 (1956-06-01), Lee
patent: 2801701 (1957-08-01), Coar
patent: 2942673 (1960-06-01), Bogue
patent: 2951543 (1960-09-01), Peterson
patent: 2959228 (1960-11-01), Larkin et al.
patent: 2988153 (1961-06-01), Haworth et al.
patent: 3253658 (1966-05-01), Bradley

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