Communications: electrical – Selective – Having indication or alarm
Patent
1975-08-20
1976-05-18
Kunin, Stephen G.
Communications: electrical
Selective
Having indication or alarm
73178R, 2351502, 244182, 343 7TA, 343112A, 343112CA, G01C 500
Patent
active
039582183
ABSTRACT:
By using air speed as an input to a ground proximity warning system that includes: a signal representative of the time rate of change of the aircraft altitude with respect to ground; circuitry for limiting the amplitude of this signal; a signal that represents a time rate of change of the aircraft's barometric altitude; and circuitry for combining the amplitude limited signal, representing the time rate of change of the aircraft with respect to ground, with a signal that represents the aircraft's altitude over ground; the effective warning time is extended by increasing the allowable amplitude, of the signal representing rate of change of the aircraft with respect to the ground, in response to the speed of the aircraft.
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Brantley, James Q., "Radar Offers Solution to Midair Collisions," Electronics, Nov. 1954, pp. 146-150.
Killingsworth Ted E.
Kunin Stephen G.
McMurry Michael B.
Sundstrand Data Control Inc.
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