Aeronautics and astronautics – Aircraft control
Patent
1975-05-27
1976-05-25
Blix, Trygve M.
Aeronautics and astronautics
Aircraft control
74471R, B64C 1342
Patent
active
039587797
ABSTRACT:
A control system including a jam isolating coupling for use in an aircraft including a plurality of related movable control members adapted to be moved in unison under normal operation conditions by appropriate separate and interconnected actuators. The related movable members are each provided with separate actuating shafts joined by a coupling which includes a sleeve which connects both shafts. Shearable rivets pass through suitable apertures in the sleeve and in one of the actuating shafts while the related actuating shaft is securely fastened to the sleeve by a plurality of bolts. The coupling structure is capable of accommodating any loads associated with the normal operation of the control system. However, when movement of a related control member is encumbered, the resistance to movement of the inoperable control member is opposed by the actuating forces applied through the operable actuating shaft of the related control member producing a high stress concentration on the shearable rivets causing them to shear and thereby disconnect the sleeve and its associated actuating shaft and isolate the encumbered control members from the related control member shaft.
REFERENCES:
patent: 2307556 (1943-01-01), Wileman
patent: 2773369 (1956-12-01), Klemm
patent: 2793503 (1957-05-01), Geyer
patent: 2869385 (1959-01-01), Geyer
patent: 2892329 (1959-06-01), Trigilio
patent: 3608430 (1971-09-01), Headlund et al.
Barefoot Galen L.
Blix Trygve M.
Fairchild Industries Inc.
York Michael W.
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