Mach hold control circuit for autothrottle system

Details Mach hold control circuit for autothrottle system Mach hold control circuit for autothrottle system

1978-08-07

1980-06-03

Blix, Trygve M.

Aeronautics and astronautics

Aircraft control

Automatic

364431, G05D 108

Patent

active

042058147

ABSTRACT:
A Mach hold control circuit for an aircraft autothrottle system provides capture of a Mach number and control thereto while providing a low level of throttle activity also stabilizing the aircraft at maximum range cruise (MRC) Mach numbers and above. The Mach hold control law utilizes a Mach error signal, flight path acceleration signal, average engine EPR signal, and associated logic inputs and when interfaced with the autothrottle system provides a throttle rate command to the aircraft engines via. the throttle and engine control system thereby modulating engine thrust to provide control to desired flight Mach number.

REFERENCES:
patent: 2950075 (1960-08-01), Owen
patent: 3901466 (1975-08-01), Lambregts

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