G - Physics – 01 – C
Patent
G - Physics
01
C
343/15, 73/168,
G01C 23/00 (2006.01) G01C 5/00 (2006.01) G01D 1/16 (2006.01) G05D 1/06 (2006.01)
Patent
CA 1039535
ABSTRACT OF THE DISCLOSURE In a terrain warning system wherein the rate of the aircraft's closure to the terrain is compared to the aircraft's altitude above the terrain in order to generate a warning signal for excessive closure rates, a circuit is provided to inhibit the warning signal when the aircraft begins to climb in response to the warning signal and to measure the altitude gained by the aircraft resulting in the reactivation of the warning signal if the aircraft has leveled off before gaining a predetermined amount of altitude. The circuit includes: a memory element to indicate that a warning signal has been generated; a circuit to gen- erate a climb signal in response to a barometric rate of change signal indicat- ing the aircraft is climbing; and an integrating circuit responsive to the barometric rate signal to determine the amount of altitude the aircraft has ??ined while climbing. If the aircraft has not gained the predetermined amount of altitude before leveling off, as indicated by the climb signal, the memory ??? ??t will reactivate the warning signal. -1-
240361
Bateman Charles D.
Brem Frank J.
Muller Hans R.
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