Boots – shoes – and leggings
Patent
1979-09-12
1982-04-27
Smith, Jerry
Boots, shoes, and leggings
244111, 303 93, B60T 812
Patent
active
043274137
ABSTRACT:
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 output corresponding to the instantaneous rate of actual deceleration of the aircraft. Comparator circuitry compares 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.
REFERENCES:
patent: 3555391 (1971-01-01), Younkin
patent: 3829167 (1974-08-01), Ruof et al.
patent: 3856365 (1974-12-01), Steigerwald et al.
patent: 3920278 (1975-11-01), Hirzel et al.
patent: 4007970 (1977-02-01), Romero
patent: 4105258 (1978-08-01), Bornfleth
patent: 4120540 (1978-10-01), Devlieg
Goodyear Aerospace Corporation
Milliken P. E.
Oldham E. W.
Smith Jerry
Weber R. L.
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