Pressure differential system

Details Pressure differential system Pressure differential system

1977-06-13

1979-08-21

Yuen, Henry C.

B64D 1300

Patent

active

041648994

ABSTRACT:
In a cabin pressure control system utilizing dual controllers, one of which is in primary control of cabin pressure and the other of which is standby, external pressure and cabin pressure are monitored. If the difference exceeds a predetermined safe value, the rate of change of cabin pressure is incremented based on the excess. Also, switching of control from the primary to secondary controller, as would occur upon malfunction, is prevented.

REFERENCES:
patent: 2983211 (1961-05-01), Andersen, Jr.
patent: 3192848 (1965-07-01), Townsend
patent: 3376803 (1968-04-01), Emmons
patent: 3434407 (1969-03-01), Best
patent: 3461790 (1969-08-01), Kinsell et al.
patent: 3473460 (1969-10-01), Emmons
patent: 3728955 (1973-04-01), Ricaud

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