Cruise airspeed control for aircraft

Details Cruise airspeed control for aircraft Cruise airspeed control for aircraft

G - Physics

05

D

341/86

G05D 1/06 (2006.01)

Patent

CA 1199996

ABSTRACT OF THE DISCLOSURE A cruise speed control apparatus for aircraft wherein small differences between the target Mach command and the actual Mach number of the aircraft are used to displace the aircraft from its reference altitude to either increase or decrease actual Mach number in the short term. Long term differences are corrected through a special isolation filter to separate the engine control loop and pitch control loop dynamics and an integration technique to adjust the automatic throttles about a thrust target for the commanded Mach. Large differences between the target Mach and the actual Mach or large charges in the commanded Mach are compensated for by a non-linear gain that effectively increases or decreases the target thrust to cause the aircraft to accelerate or decelerate to the commanded Mach.

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