Патент USA US2404045код для вставки
July 15, 1946- F. E. FLADER 2,404,045 AIRFOIL MOUNTING‘ AND ACTUATING MECHANISM Filed Nov. 20, 1943 FIG. I II "I INVENTOR. \/ FREDRIC E. FLADER ATTORNEY Patented July 16, 1946 2,404,045 UNITED STATES PATENT OFFICE 2,404,045 AIRFOIL MOUNTING AND ACTUATING MECHANISM ‘ Fredric E. Flader, Kenmore, N. Y., assignor to Curtiss-Wright Corporation, a corporation ,of Delaware Application November 20, 1943, Serial No. 511,155 1 2 Claims. (Cl. 244-42) 2 This invention relates to I improvements in of the arms l3 includes a cylinder I5. Hydraulic ?uid from supply lines I6 and Il may be intro mounting and actuating mechanisms for the aux iliary airfoils of airplanes, and more particu duced into the said cylinders through branches larly the invention is concerned with a mechanism I8 and I9, respectively, the delivery of ?uid under of the kind which may be availed of to extend and 5 pressure from the pump, or other source, to the lower a flap, whereby to increase the effective supply lines being controlled by a suitable valve camber of the wing of which the flap is a part and or valves (not shown). at the same time open a slot in, and increase the At its inner end each of the cylinders I4 is basic or overall area of, the wing. pivotally connected to a bracket 20 which is“ car One object of the invention is to provide a 10 ried by a rib or other convenient part of the main mechanism of the character generally described airfoil. which will move the auxiliary airfoil rapidly to are secured at their outer as well as at their inner the desired position and which will support it solidly in such position. A further object is to provide a mechanism which is operable to lower the auxiliary airfoil in any desired extended position.’ A still further object is a mechanism which may, if desired, be actuated to lower the auxiliary airfoil without at the same time extending it. A still further object is to provide a mechanism which may be utilized to mount the auxiliary airfoil upon the main airfoil ‘without cutting into, or otherwise deforming, the nose or leading edge of the auxiliary airfoil. A still further object is a novel design and arrangement of the parts of the mechanism, whereby to obtain simplicity in construction and dependability in operation. _ The invention is illustrated in the accompanying drawing, in which: Figure 1 is a view in plan of an airplane wing having a ?ap mounted and actuated by mechanism embodying the features of the invention. Figure 2 is an enlarged transverse section taken along line 2--2 of Figure 1, the flap being shown in full lines in its normal elevated position and in dotted lines in its lowered, extended position. Figure 3 is a similar section, the flap being shown in full lines in the same position as in Figure 2 but being Shown in dotted lines in a lowered, non-extended position The mounting and actuating mechanism is illustrated by way of example in connection with a flap II! of an airplane, the latter being su?iciently indicated for the purpose in view by a ends, as at 2|, to ?xed parts of the main airfoil. Plungers 22 which are connected to, or which are extensions of, the pistons (not shown) in the cyl inders I4 are pivotally connected at their outer ends to cars 23 on upper and rearwardly located portions of the nose of the flap while plungers 24 associated with the cylinders I5 are connected at their outer ends to cars 25 on lower and forwardly located portions of the nose of the flap, the con nections of the plungers 22 with the ears 23 and the connections of the plungers 24 with the ears 25 preferably being along parallel lines. Normally the plungers 22 and 24 support the ?ap in the full-line position shown in Figures 2 and 3. In such position the nose of the ?ap is located under, and in pro?le conforms substantially to, the trailing edge of the main airfoil, while the upper and lower surfaces of the flap provide substan tially uninterrupted continuations of the corre sponding surfaces of the main airfoil. The ?ap I0 may be extended and lowered to increase the lift of the wing by admitting hy draulic fluid into the cylinders I4 and I5, simul taneously or otherwise. As the plungers 22 and 24 are extended, the flap is moved to the dotted line position illustrated in Figure 2. The move ment of the ?ap to such position increases sub stantially the basic area, chord and camber of the wing and at the same time opens a slot between the nose of the ?ap and the trailing edge of the main airfoil through which air may ?ow from the under side of the wing. On the other hand, if it is desired to maintain the basic area of the wing constant and obtain the increased lift by showing of a wing II thereof. In accordance with the invention the flap I0 15 20 25 30 35 40 45 The cylinders [5, on the other hand, lowering the ?ap without extending it, hydraulic fluid may be admitted only to the cylinders I4. is connected to the main airfoil by an upper series In this event the plungers 22 are extended while of extensible arms I2 and a lower series of ex- 50 the plungers 24 are held in their normal re tensible arms I3. Although the said arms may, if tracted positions, and the flap is moved to the desired, be in the form of jackscrews and medotted-line position shown in Figure 3 without chanically actuated, they are preferably, as illusopening a slot between it and the main airfoil. trated, hydraulically actuated. To this end, each The ?ap may also be adjusted to, and supported of the arms I2 includes a cylinder I4 while each 65 in, various other positions by limiting to differ 2,404,045 3 4 ent degrees the outward movement of the plungers of said cylinders to said main airfoil so that they ~ are supported against angular movement, means 22 and 24. It will be apparent that the plungers 24 pro for pivotally connecting other of said cylinders to vide pivots about which the ?ap may be angu said main airfoil so that they are free to move larly adjusted by the plungers 22, the stationary (R angularly, and means for introducing hydraulic fluid into said cylinders to cause said plungers cylinders l5 permitting rectilinear movement only to move said auxiliary airfoil with relation to said of the plungers 24 while the pivotally mounted main airfoil; cylinders 14 automatically swing about their 42. Mechanism for attaching an auxiliary airfoil inwardly. The construction described has the 10 ‘to a main airfoil and for actuating the auxiliary airfoil, said mechanism including a plurality of advantage that any desired angular movement arms, each having a hydraulic cylinder and an of the flap may be obtained for any desired slot ‘ extensible plunger carried by the cylinder, means adjustment. In this connection it will also be for pivotally connecting said plungers to said noted that the connection of the ?ap to the mounting and actuating mechanism does not in 15 auxiliary airfoil, means for connecting certain of pivots as the plungers 22 are moved outwardly or volve cutting away of any of the nose portions of the flap or in otherwise interfering to any sub stantial degree with the free passage of air be tween, or around, the main and auxiliary airfoils. I claim as my invention: said cylinders to said main airfoil so ‘that they are supported against angular movement, means for pivotally connecting other of said cylinders to said main airfoil so that they are free to move 20 angularly, and means for introducing hydraulic 1. Mechanism for attaching an auxiliary airfoil to a main airfoil and for actuating the auxiliary airfoil, said mechanism including a plurality of arms, each having a hydraulic cylinder and an extensible plunger carried by the cylinder, means 25 for pivotally connecting said plungers to said auxiliary airfoil, means for connecting certain ?uid into said cylinders to cause said plungers to extend and lower said auxiliary airfoil, said arms being operative to lower said auxiliary air foil to substantially the same degree in various extended positions. FREDRIC E. FLADER.