Brake valve control system

Details Brake valve control system Brake valve control system

1989-05-26

1991-09-03

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple control

Double heading

244111, 303113, 303117, 303 93, B60T 1118, B60T 1516

Patent

active

050446975

ABSTRACT:
The brake valve control system for an aircraft wheel bracking system includes primary and backup brake valve control subsystems and isolates and switches between subsystems. Certain portions of the entire braking system are shared, and those portions which are not shared are isolated but interconnected for switching from a primary brake control mode to a backup subsystem upon failure of the primary subsystem. A unique metering spool valve, and the linking of metering spool valves and servocontrol valves with either a tandem selector valve or interlinked primary and secondary selector valves allows for significant reduction in weight and complexity for the backup or override system.

REFERENCES:
patent: 3503655 (1970-03-01), Heimler
patent: 3920282 (1975-11-01), Devlieg
patent: 4076331 (1978-02-01), Devlieg
patent: 4120540 (1978-10-01), Devlieg
patent: 4166654 (1979-09-01), Snodgrass
patent: 4591213 (1986-05-01), Rapoport
patent: 4640475 (1987-02-01), Zoerb
patent: 4770470 (1988-09-01), Tarumizu et al.
patent: 4792192 (1988-12-01), Tveitane

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