Power plants – Pressure fluid source and motor – Apparatus having means responsive to or ameliorating the...
Patent
1993-11-04
1994-09-06
Look, Edward K.
Power plants
Pressure fluid source and motor
Apparatus having means responsive to or ameliorating the...
60459, 91461, F16D 3102
Patent
active
053437039
ABSTRACT:
A control apparatus comprises a plurality of servomechanisms for controlling a control surface of an aircraft. Each of the servomechanisms is equipped with a control valve for controlling the oil pressure in hydraulic chambers of the actuator assembly operatively connected to the control surface, and a switching valve provided between the actuator assembly and the control valve and shiftable to assume driving, bypassing and damper valve positions. The switching valves of the servomechanisms are shifted to assume the driving valve position in a normal operation. If one of the servomechanisms is damaged, the switching valve of the damaged servomechanism is shifted to assume the bypassing valve position. If all of the servomechanisms are damaged, the switching valves of the damaged all servomechanisms are shifted to assume the damper valve position.
REFERENCES:
patent: 3398531 (1968-08-01), Swanson et al.
patent: 4143583 (1979-03-01), Bauer et al.
patent: 4647004 (1987-03-01), Bihlmaier
patent: 5074495 (1991-12-01), Raymond
patent: 5100082 (1992-03-01), Archune
patent: 5146745 (1992-09-01), Doetsch
patent: 5191826 (1993-03-01), Brunner
Look Edward K.
Nguyen Hoang
Teijin Seiko Co., Ltd.
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