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 forw
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.
대표청구항▼
A variable camber airfoil comprising: a. a support frame, b. upper and lower skins attached to said frame, c. a trailing edge end section, d. a variable camber upper skin section extending from said frame to said trailing edge end section, e. a variable camber lower skin section extending from said
A variable camber airfoil comprising: a. a support frame, b. upper and lower skins attached to said frame, c. a trailing edge end section, d. a variable camber upper skin section extending from said frame to said trailing edge end section, e. a variable camber lower skin section extending from said frame to said trailing edge end section, f. a walking beam positioned between the upper and lower variable camber skin sections, said walking beam comrpising a forward positioning section and a rearwardly extending locating arm, g. positioning means to locate said forward positioning section of the walking beam relative to said frame, said positioning means comprising: (1) a first forward connecting means interconnecting a forward connecting portion of the positioning section of the walking beam to said frame for movement of the forward connecting portion back and forth on an upwardly and forwardly directed path, (2) a second rearward connecting means interconnecting a rearward connecting portion of the positioning section of the walking beam to the frame for movement back and forth on an upwardly and rearwardly directed path, whereby said positioning section is constrained to move in a manner that forward movement thereof rotates said locating arm downwardly, and rearward movement thereof rotates said locating arm upwardly, h. a whiffle tree beam comprising: (1) a forward portion connected to said frame, (2) a rear portion connected to said trailing edge end section in a manner to permit relative rotation between said rear portion and said trailing edge end section, (3) an intermediate portion connected to said locating arm at an intermediate location in a manner to permit relative rotation between said intermediate portion and said locating arm, i. a tilting arm compring: (1) a forward portion connected to said locating arm at an end location positioned rearwardly of said intermediate location in a manner to be rotatable with respect to said locating arm, (2) a rear portion connected to said trailing edge section in a manner to cause said trailing edge end section to be rotatable with said tilting arm whereby downward and upward rotational movement of the locating arm of the walking beam causes a corresponding downward or upward rotational movement of the whiffle tree beam and the tilting arm of a correspondingly greater degree of rotation relative to said locating arm, with the tilting arm rotating to a greater degree relative to the whiffle tree beam.
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이 특허에 인용된 특허 (2)
Cole James B. (Mercer Island WA), Variable camber airfoil.
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