Variable camber trailing edge for airfoil

Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils

Patent

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Details

244219, B64C 350

Patent

active

043124860

ABSTRACT:
An airfoil having a support frame, a trailing edge end section, and upper and lower variable camber skin sections extending rearwardly from the support frame to the trailing edge end section. A walking beam is positioned between the upper and lower variable camber skin sections, and comprises a forward positioning section and a rearwardly extending locating arm. The positioning section is connected to the lower swing ends of two pivot links in a manner that forward or rearward movement of the positioning section causes the locating arm of the walking beam to rotate, respectively, downwardly or upwardly. A whiffle tree beam is connected by its forward end to the support frame and by its rear end is pivotally connected to the trailing edge end section, with the whiffle tree beam being connected at an intermediate portion thereof to the rear end of the locating arm of the walking beam. A tilting arm is connected to the locating arm, to the whiffle tree beam and to the trailing edge section. Thus, downward or upward rotational movement of the locating arm of the walking beam causes a corresponding downward or upward rotational movement of the trailing edge end section of a correspondingly greater degree of rotation, relative to the locating arm.

REFERENCES:
patent: 4053124 (1977-10-01), Cole
patent: 4131253 (1978-12-01), Zapel

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