Angle of attack based pitch generator and head up display

Details Angle of attack based pitch generator and head up display Angle of attack based pitch generator and head up display

G - Physics

01

C

354/19

G01C 23/00 (2006.01) G05D 1/06 (2006.01) G06G 7/78 (2006.01)

Patent

CA 1171530

ANGLE OF ATTACK BASED PITCH GENERATOR AND HEAD UP DISPLAY Abstract A circuit for computing a signal representing the pitch attitude of an aircraft utilizes angle of attack based information and the output of a gyroscope to produce a calculated pitch signal which has a long term component dependent upon the angle of attack based information and a short term component dependent upon the gyroscope output signal. The calculated pitch signal may be used to pitch stabilize a head up display in the aircraft and in this event is modified with a correction signal derived from the pitch signal and the output of a head up display mounted accelerometer. Alternatively, the pitch signal may be combined with a signal representing the difference between the output of the display mounted accelerometer and the output of an angle of attack vane mounted accelerometer to provide a pitch stabilization signal which is free of turn and shear errors.

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