Aircraft trailing edge flap apparatus

Details Aircraft trailing edge flap apparatus Aircraft trailing edge flap apparatus

1984-12-06

1987-10-27

Barefoot, Galen

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

244218, B64C 920

Patent

active

047024429

ABSTRACT:
An aircraft trailing edge flap assembly including a main flap and an aft flap are repositioned by a dual arm rotary actuator. One arm of the rotary actuator repositions the main flap by driving a carriage assembly along a linear track. The other arm of the rotary actuator repositions the aft flap by driving a bell crank assembly which is operatively connected to an aft flap support member extending downward from the aft flap. The aft flap support member is operatively connected to a main flap support member which extends downwardly and rearwardly from the rear portion of the main flap to operatively connect with a mounting member extending downwardly and rearwardly from the track so that the track mounting member supports the majority of aerodynamic load forces applied to the flap assembly. Both arms of the rotary actuator rotate together through a predetermined arc so that the aft flap and main flap remain in a nested configuration. The main flap rotary arm engages a stop pin resulting in the aft flap rotary arm continuing to rotate the aft flap an additional amount relative to the main flap.

REFERENCES:
patent: 2137879 (1938-11-01), Ksoll
patent: 2146014 (1939-02-01), Grant
patent: 2908454 (1959-10-01), Wolff
patent: 3985319 (1976-10-01), Deant et al.
patent: 4381093 (1983-04-01), Rudolph

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