Reverse thrust limiting system

Details Reverse thrust limiting system Reverse thrust limiting system

1976-02-06

1977-08-09

Blix, Trygve M.

Aeronautics and astronautics

Aircraft control

Automatic

74506, 74526, B64C 1330

Patent

active

040405818

ABSTRACT:
A system for reliably limiting the maximum positions to which the power control lever of an aircraft engine may be set in the thrust reversal mode corresponding to whether the aircraft is in the air or on the ground. A plurality of cable drums, one for each of the power control lines extending between the cockpit and the engines of a multi-engine aircraft, is associated with an adjustable stop mechanism which provides a first stop position for the cable drum when the aircraft is in the air with landing gear up and a second stop position permitting increased reverse thrust when the aircraft is on the ground. The system is coordinated with the landing gear position sensing system of the aircraft and works in conjunction with presently installed thrust reversing systems. The system includes an arrangement for moving the elements to a safe, non-jamming position in the event of linkage failure and incorporates circuitry with suitable instrument panel lights to give indications of readiness for use and system failure. The system is designed for installation without modification of engine thrust reversal mechanisms or cockpit controls.

REFERENCES:
patent: 2446700 (1948-08-01), Giles et al.

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