Hydraulic asymmetry detector

Details Hydraulic asymmetry detector Hydraulic asymmetry detector

1983-11-17

1985-06-04

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Releasing

Motor

188170, 244111, B60T 1322

Patent

active

045210608

ABSTRACT:
A hydraulic asymmetry detector for sensing differential movement of a pair of flight control surfaces, such as the wing flaps of an aircraft, which are actuable by actuating mechanisms. The detector has a pressure-regulator valve and a sensor valve, with the pressure-regulator valve operable in response to movement of one actuating mechanism to set a control pressure proportional thereto, and the sensor valve has a valve member which senses a force balance between a force created by the control pressure and a force which is proportional to the movement of the other actuating mechanism. The sensor valve member moves with a snap action when there is a force imbalance to result in setting one or more brakes for the actuating mechanisms to lock the actuating mechanisms and thereby limit the asymmetric condition within a manageable range.

REFERENCES:
patent: 2597420 (1952-05-01), Westbury
patent: 2717745 (1955-09-01), Carter
patent: 2926497 (1960-03-01), Biernath
patent: 3456988 (1969-07-01), Gibbons et al.

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