A variable camber Krueger flap deployment linkage mechanism is presented. A first linkage assembly couples a flap assembly and an airfoil, and comprising a first drive arm, a first drive link, and a support arm. A second linkage assembly couples the flap assembly and the first drive arm, and compris
A variable camber Krueger flap deployment linkage mechanism is presented. A first linkage assembly couples a flap assembly and an airfoil, and comprising a first drive arm, a first drive link, and a support arm. A second linkage assembly couples the flap assembly and the first drive arm, and comprises a drive transfer arm, a middle connection segment, and a bullnose link.
대표청구항▼
1. A variable camber Krueger flap deployment linkage mechanism comprising: a Krueger flap having a bullnose member and a trailing end member;a flap linkage assembly coupling a first linkage assembly and a second linkage assembly to the Krueger flap, the flap linkage assembly comprising: a flap link
1. A variable camber Krueger flap deployment linkage mechanism comprising: a Krueger flap having a bullnose member and a trailing end member;a flap linkage assembly coupling a first linkage assembly and a second linkage assembly to the Krueger flap, the flap linkage assembly comprising: a flap link coupled to the bullnose member and the trailing end member;the first linkage assembly being coupled to the flap linkage assembly and an airfoil, the first linkage assembly comprising: a first drive arm configured to couple to an actuator coupled to the airfoil, and configured to rotate in a chord-wise plane;a first drive link coupled to the first drive arm at a first end and coupled to the flap link at a second end; anda support arm coupled to a middle link portion of the first drive link and configured to rotatably couple to the airfoil at a rotation joint; andthe second linkage assembly being coupled to the flap linkage assembly and the first drive arm, the second linkage assembly comprising: a drive transfer arm coupled to the flap link;wherein the flap link, first drive link, first drive arm, and drive transfer arm form a four bar linkage; andwherein the middle link portion is located between first and second ends of the first drive link. 2. The flap deployment linkage mechanism of claim 1, further comprising the actuator and the airfoil. 3. The flap deployment linkage mechanism of claim 1, wherein the Krueger flap is positioned in an elevated position relative to the airfoil to provide high-lift capability. 4. The flap deployment linkage mechanism of claim 1, wherein the Krueger flap comprises a flexible surface coupled between the bullnose member and the trailing end member. 5. The flap deployment linkage mechanism of claim 4, wherein the flap link is coupled to the trailing end member via a flap trailing end link, the first drive link, and the drive transfer arm, wherein the drive transfer arm is coupled to a middle flap portion of the flap link. 6. The flap deployment linkage mechanism of claim 5, wherein the flap linkage assembly further comprises: a flap trailing end link coupled to the trailing end member, the flap link, the first drive link via the flap link, and a middle connection segment of the second linkage assembly. 7. The flap deployment linkage mechanism of claim 1, wherein the second linkage assembly further comprises: a middle connection segment configured to couple the drive transfer arm to the trailing end of the Krueger flap; anda bullnose link configured to couple the drive transfer arm to a bullnose portion of the Krueger flap. 8. A flap linkage assembly coupled to a Krueger flap assembly comprising a bullnose member, a trailing end member, and a flexible surface coupled between the bullnose member and the trailing end member, the flap linkage assembly comprising: a flap link coupled to the bullnose member;a flap trailing end link coupled to the trailing end member and the flap link, the flap link coupled to the trailing end member via the flap trailing end link;a first drive arm configured to couple to an actuator coupled to an airfoil, and configured to rotate in a chord-wise plane;a first drive link coupled at a first end to the first drive arm and coupled at a second end to the trailing end member of the Krueger flap assembly via the flap trailing end link;a support arm coupled to a middle link portion of the first drive link and configured to rotatably couple to the airfoil at a rotation jointa drive transfer arm coupled to a middle flap portion of the flap link;a middle connection segment coupled to the drive transfer arm and to the flap trailing end link; anda bullnose link configured to couple the drive transfer arm to the bullnose member;wherein the flap link, first drive link, first drive arm, and drive transfer arm form a four bar linkage; andwherein the middle link portion is located between first and second ends of the first drive link. 9. The flap linkage assembly of claim 8, wherein a sequence of flap positions are deployed where the flap assembly is positioned below and aft of a wing leading edge before reaching a configured takeoff and landing position. 10. The flap linkage assembly of claim 9, wherein the flap assembly is positioned in a high position relative to the wing leading edge when the flap assembly is fully deployed. 11. The flap linkage assembly of claim 10, wherein the flap assembly enables high-lift. 12. The flap linkage assembly of claim 8, wherein the airfoil comprises an aircraft wing and the flap assembly comprises a variable camber Krueger flap. 13. The flap linkage assembly of claim 8, wherein the flap assembly is further coupled to the airfoil. 14. The flap linkage assembly of claim 8, wherein the flap assembly is operable to be positioned in an elevated position relative to the airfoil. 15. The flap linkage assembly of claim 8, wherein the flap assembly is further coupled to the actuator.
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이 특허에 인용된 특허 (5)
Fox, Stephen J.; Sakurai, Seiya, Link mechanisms for gapped rigid krueger flaps, and associated systems and methods.
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