Flap drive with variable torque limiting

Details Flap drive with variable torque limiting Flap drive with variable torque limiting

1987-06-19

1988-11-22

Barefoot, Galen

Aeronautics and astronautics

Aircraft control

244213, B64C 1324

Patent

active

047860138

ABSTRACT:
Flaps mounted on an carriage are being protracted and retracted in relation to a aircraft wing of which the flap is a part by a drive mechanism which is to be provided for variable torque and torque limiting and, if necessary, fixing and holding the position of the flap and its drive carriage in case of failure. A branching gear is driven for the common shaft which drives the flaps of one wing and there are separate transmission paths which include in each instance output shafts from the branching gear, crank drives and thrust rods. One of the thrust rod is directly connected to the flap carrying carriage and the other one indirectly through a load switch and a connecting rod; in addition one of the output shafts of the branching gear is lead into a delta alpha brake having as a second input, the output of the principle drive shaft. The delta alpha brake stops motion of the flap carrying carriage in case there is an angle difference among its input shafts that exceeds a particular limit.

REFERENCES:
patent: 3935754 (1976-02-01), Comollo
patent: 4260121 (1981-04-01), Baston et al.
patent: 4273006 (1981-06-01), Woodbury

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