Apparatus and method for displaying aircraft flight path angle o

Details Apparatus and method for displaying aircraft flight path angle o Apparatus and method for displaying aircraft flight path angle o

1990-03-06

1991-03-26

Orsino, Joseph A.

Communications: electrical

Aircraft alarm or indicating systems

Nonalarm flight indicator

244181, 340976, 364434, G01C 2100

Patent

active

050033050

ABSTRACT:
A flight path angle symbol is positioned on an aircraft attitude display indicator as a function of either a measured flight path angle or a flight path angle commanded by the pilot. When the aircraft is operating within a selected airspeed, angle of attack, pitch attitude or load factor range, or the difference between measured flight path angle and commanded flight path angle is within a selected range, the symbol is positioned on the display as a function of commanded flight path angle. However when the aircraft is operating outside any of these ranges, the symbols is positioned on the display as a function of the measured flight path angle. To avoid a rapid jump in symbol position when transitioning between measured and commanded flight path angle displays, a phase lag filter is used to attenuate and lag the symbol positioning signal.

REFERENCES:
patent: 3851303 (1974-11-01), Muller
patent: 4147056 (1979-04-01), Muller
patent: 4373184 (1983-02-01), Lambregts
patent: 4536843 (1985-08-01), Lambregts

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