Aircraft wheel brake control system and method

Details Aircraft wheel brake control system and method Aircraft wheel brake control system and method

1984-12-24

1987-02-03

Butler, Douglas C.

Aeronautics and astronautics

Retarding and restraining devices

Wheel brake arrangement

303117, 303119, B60T 802, B64C 2542

Patent

active

046404759

ABSTRACT:
A port control member (24) of a metering valve (10) is mechanically connected to a pilot operated foot pedal (38). Foot pedal (38) movement of this member (24) meters fluid pressure to a second electrically controlled metering valve (108, 110, 112). Pressure from the second metering valve (108, 110, 112) is delivered to one end of a port control member (126) of a third metering valve (126, 136, 138, 140). The third metering valve (126, 136, 138, 140) meters pressure and flow from a supply pressure to wheel brakes (50). Feedback pressure from the brakes (142) is applied to the port control member (126) in opposition to the command pressure (124). The command pressure (108, 110, 112) is fed back to act on the port control member (24) of the first stage valve (10) in opposite relation to the pilot developed pedal force.

REFERENCES:
patent: 2826278 (1958-03-01), Highley
patent: 3443594 (1969-05-01), Frayer
patent: 3671082 (1972-06-01), Stevens
patent: 4120540 (1978-10-01), Devlieg
patent: 4125234 (1978-11-01), Tregre
patent: 4130322 (1978-12-01), Cook
patent: 4360239 (1982-11-01), Boehringer

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