B - Operations – Transporting – 64 – C
Patent
B - Operations, Transporting
64
C
341/87
B64C 13/00 (2006.01) B60T 8/17 (2006.01) B64C 25/42 (2006.01) G05D 1/00 (2006.01)
Patent
CA 1139403
AUTOMATIC DECELERATION CONTROL APPARATUS ABSTRACT OF THE DISCLOSURE A circuit incorporated in a braking system for allowing a pilot to select a desired rate of deceleration and to cause the aircraft, upon landing, to achieve and maintain the selected deceleration rate. Fundamentally, the circuit includes a selector switch for selecting the desired rate of deceleration and uses a linear decelerometer signal having an out- put corresponding to the instantaneous rate of actual deceleration of the aircraft. Comparator circuitry com- pares the actual and desired rates of deceleration and provides an error signal to high and low rate circuits which charge a storage capacitor which in turn, through a buffer and power drive circuitry, regulates the associated control valve. When the difference between the actual and desired rates exceeds a particular level, the high rate circuit controls the charging of the capacitor. The low rate circuit operates when the difference between the actual and desired rates is below the particular level, and is operative to cause the actual rate of deceleration to asymptotically approach the desired rate. There is also included an initialization circuit for quickly filling the brake cavities to initiate the braking operation.
355036
Goodyear Aerospace Corporation
Sim & Mcburney
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