High lift surface actuation system

Details High lift surface actuation system High lift surface actuation system

1982-06-25

1984-04-10

Blix, Trygve M.

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244194, 747105, 60711, B64C 350, F16H 144, G05D 100

Patent

active

044416750

ABSTRACT:
A drive system for high-lift devices on aircraft having two power drive units, one at each end of the connecting torque tube system, so as to force sum the outputs. A one-way brake always insures against inadvertent retraction of the device but allows extension. An asymmetrical protective device prevents the high-lift device from an asymmetrical condition even after a combined power loss and mechanical failure of the torque tube. The power drive units consist of hydraulic motors driving through a gear box and a no-back brake combination and are controlled by a servo valve.

REFERENCES:
patent: 1034242 (1912-07-01), Johnson
patent: 2793503 (1957-05-01), Geyer
patent: 2827136 (1958-03-01), Sorchy
patent: 3841589 (1974-10-01), Appleby et al.
patent: 3935754 (1976-02-01), Comollo
patent: 4256277 (1981-03-01), Embree
patent: 4260121 (1981-04-01), Baston et al.

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