Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1977-07-21
1978-12-26
Kelmachter, Barry L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244215, B64C 348
Patent
active
041312538
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 which extend upwardly and convergently toward one another to connect to the pivot frame at spaced locations so that forward or rearward movement of the positioning section causes the locating arm of the walking beam to rotate, respectively, downwardly or upwardly. A trailing edge beam is connected by its forward end to the support frame and by its rear end to the trailing edge end section, with the trailing edge beam being connected at an intermediate portion thereof to the rear end of the locating arm of the walking beam. 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.
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Kelmachter Barry L.
The Boeing Company
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