Drive mechanism for combined flap-aileron surface

Details Drive mechanism for combined flap-aileron surface Drive mechanism for combined flap-aileron surface

1982-09-30

1985-10-01

Blix, Trygve M.

Aeronautics and astronautics

Aircraft control

Pilot operated

244215, 244 90R, B64C 906, B64C 918

Patent

active

045441189

ABSTRACT:
A flap (22) carries a guide roller (24) at each of its ends. Each guide roller (24) travels within a fore and aft track (28) positioned immediately endwise outwardly of its end of the flap (22). The flap (22) is extended and retracted by means including a reaction link (36) and a two-way linear actuator (38). The actuator (38) and the reaction link (36) are pivotally connected at their forward ends to the outer end of a bell crank arm (34), for pivotal movement about a common axis (40). At its rearward end the actuator (38) is pivotally attached to the flap at a location (44) offset above the roller (24). The reaction link (36) is pivotally attached at its rearward end to the flap (22) at a location (42) offset below the roller (24). Rotation of the bell crank arm (34) alone will result in the flap (22) being translated rearwardly and rotated downwardly, i.e. Fowler flap movement. Extension or retraction of the actuator (38) will cause a rotation of the flap (22) about the axes (26) of the rollers (24).

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