Altimeter and vertical speed indicator

Details Altimeter and vertical speed indicator Altimeter and vertical speed indicator

1983-12-05

1985-09-10

Woodiel, Donald O.

Measuring and testing

Navigation

Rate of climb

73384, G01C 2110, G01L 712

Patent

active

045398437

ABSTRACT:
A combination altimeter and vertical speed indicator using digital displays. Digital logic technique are used to calculate vertical speed, eliminate drift in the vertical speed zero indication, correct vertical speed readings for altitude, and display altitude below zero. An automatic reading of barometric pressure setting for use as an offset is furnished at turn-on to permit initial setting of the instrument. Power to the instrument is pulsed to reduce consumption and permit long term battery operation.

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patent: 2718783 (1955-09-01), Anastasia
patent: 3098381 (1963-07-01), Little
patent: 3545269 (1970-12-01), Sherbert, Jr.
patent: 3572115 (1971-03-01), Feuer
patent: 3726138 (1973-04-01), Kosakowski
patent: 3958108 (1976-05-01), Shimomura
patent: 3958459 (1976-05-01), Shimomura
patent: 3961272 (1976-06-01), Witriol
patent: 4027143 (1977-05-01), Witriol
patent: 4047001 (1977-09-01), Witriol
patent: 4086810 (1978-05-01), Ball
patent: 4106343 (1978-08-01), Cook
patent: 4135403 (1979-01-01), Skarvada
patent: 4292671 (1981-09-01), Evans

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