[특허]Aircraft flap mechanism having compact large fowler motion providing multiple cruise positions

The Boeing Company

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Aircraft flap mechanism having compact large fowler motion providing multiple cruise positions

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B64C-009/18 B64C-013/28
미국특허분류(USC)	244/216; 244/215; 244/099.3
출원번호	US-0242296 (2011-09-23)
등록번호	US-8684316 (2014-04-01)
발명자 / 주소	Sakurai, Seiya Wheaton, James M. Fox, Stephen J. Che, Sharon Xiangdong
출원인 / 주소	The Boeing Company
대리인 / 주소	Fischer, Felix L.
인용정보	피인용 횟수 : 12 인용 특허 : 11

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A trailing edge flap mechanism incorporates a support beam, a flap carrier beam supporting an aerodynamic flap, a first link interconnecting a first and second rotation points and a second link interconnecting third and fourth rotation points. The support beam has a ground connection on a first fixed axis of rotation. A connecting link has a ground connection on a second fixed axis of rotation and is connected to the first link intermediate the first and second rotation points. An actuator is connected with a drive link pivotally engaged to the first lin...

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1. A trailing edge flap mechanism for an aircraft comprising: a support beam having a first portion with a first rotation axis and a fourth rotation axis aft of the first rotation axis;a flap carrier beam supporting an aerodynamic flap, said carrier beam having a second rotation axis at a forward end and a third rotation axis within a nose contour of the flap aft of the second rotation axis;a first link interconnecting the first rotation axis and second rotation axis;a second link interconnecting the third rotation axis and fourth rotation axis;said support beam having a second portion extending angularly forward from the first portion and having a fifth rotation axis at a forward end for connection on a first fixed hinge axis;a connection link having a sixth rotation axis at a forward end for connection on a second fixed hinge axis and a seventh rotation axis connected to the first link intermediate the first and second rotation axes; andan actuator operably connected with a drive link pivotally engaged to the first link. 2. The trailing edge flap mechanism as defined in claim 1 wherein the actuation system includes a rotary actuator having rotation about a third fixed axis at an eighth axis of rotation and having an extending crank arm rotationally connected to a forward end of the drive link at a ninth rotation axis. 3. The trailing edge flap mechanism as defined in claim 2 wherein the third fixed axis is located proximate the rear spar of a wing. 4. The trailing edge flap mechanism as defined in claim 2 wherein the third fixed axis is intermediate the first and second fixed axes. 5. The trailing edge flap mechanism as defined in claim 1 wherein the pivotal engagement of the drive link is at a tenth rotation axis intermediate the first and second rotation axes. 6. The trailing edge flap mechanism as defined in claim 1 wherein the pivotal engagement of the drive link is at a tenth rotation axis intermediate the seventh rotation axis and the second rotation axis. 7. The trailing edge flap mechanism as defined in claim 1 wherein the connection link includes side flanges and a bridge connecting the side flanges. 8. The trailing edge flap mechanism as defined in claim 7 wherein the first link includes forwardly extending blades, the seventh rotation axis encompassed within the blades and the side flanges of the connection link are rotationally attached to the blades. 9. The trailing edge flap mechanism as defined in claim 8 wherein the support beam second portion includes siamesed members providing a center relief to receive the blades of the first link. 10. The trailing edge flap mechanism as defined in claim 7 wherein the forward end of the flap carrier beam is received between the side flanges of the connection link in a retracted position. 11. The trailing edge flap mechanism as defined in claim 7 wherein the first link comprises an A frame, said first rotation axis extending through bearing bores in feet of the A frame and a clevis at vertex to receive the forward portion of the flap carrier beam, said a frame further including a second clevis extending forward from a forward face of the A frame to receive the drive link. 12. The trailing edge flap mechanism as defined in claim 11 wherein the interconnection of the forward portion of the flap carrier beam to the first clevis in the first link is a spherical bearing and the drive link interconnection to the second clevis in the first link is a spherical bearing. 13. The trailing edge flap mechanism as defined in claim 1 wherein the first link interconnection at the second rotation point and the second link interconnections at the third and fourth rotation points are spherical bearings. 14. An aircraft wing comprising: an upper surface,a lower surface,a rear spar,a trailing edge flap mechanism providing trailing edge variable camber havinga hinged quadrilateral linkage for Fowler, trailing edge viable camber and droop motion having a support beam having a first portion with a first rotation axis and a fourth rotation axis aft of the first rotation axis;a flap carrier beam supporting an aerodynamic flap, said carrier beam having a second rotation axis at a forward end and a third rotation axis within a nose contour of the flap aft of the third rotation axis;a first link interconnecting the first rotation axis and second rotation axis;a second link interconnecting the third rotation axis and fourth rotation axis;said support beam having a second portion extending angularly forward from the first portion and having a fifth rotation axis at a forward end for ground connection as a first fixed hinge axis;a connection link having a sixth rotation axis at a forward end for ground connection as a second fixed hinge axis and a seventh rotation axis connected to the first link intermediate the first and second rotation points;an actuator connected to the first link; and wherein actuation by the drive link provides initial forward and aft movement of a nose profile of the flap substantially parallel to the wing lower surface with the connection link in a dwell with extending aft movement removing the connection link from its dwell and with a multiplier effect by the support beam providing a rapidly changing angle of the flap with respect to the wing upper surface. 15. The aircraft wing as defined in claim 14 wherein the actuator is a rotary actuator mounted aft of the rear spar and having rotation about a third fixed axis at an eighth rotation point and having an extending crank arm rotationally connected to a forward end of the drive link at a ninth rotation point and the third fixed axis is intermediate the first and second fixed axes. 16. The aircraft wing as defined in claim 14 further comprising spoilers, said spoilers drooping in a coordinated manner with the flap angle. 17. A method for operating a trailing edge flap mechanism comprising: providing a linkage having four axes of rotation at points A, B, C and D), with an AB link, a BC link, a CD link and an AD link;joining the CD link to a forward structural fixed hinge axis at point E with a support beam angularly attached to the CD link at point D) and the AB link at point A;securing a flap to the BC link for actuating motion;attaching a connecting link between a structural fixed hinge axis at point F and an axis of rotation at point G on the AB link intermediate points A and B;connecting a an actuator to the AB link at an axis of rotation at point K intermediate points A and B rotating the AB link forward for upward TEVC operation of the flap and urging the AB link aft for downward TEVC operation of the flap with the connection link in a dwell and the support beam AB link acting as a rocker arm rotating about a nearly stationary point G;urging the AB link aft taking the connection link out of its dwell to rotate about point F with the AB link having continuing rocker arm motion about point G with point A moving strongly in a downward direction about rotation point E, the up/down movement of point A on the support beam about rotation point E serving as a multiplier for up/down movement of point D pulling both flap attachment points B and D down to position the flap; and,urging the AB link further aft rotating the support beam clockwise moving point A down drawing point C with the attached AB link and CD link with the flap carrier beam downward for increased angle of the flap. 18. The method of claim 17 wherein point G is established forward of a line interconnecting rotation points A and B. 19. The method of claim 17 further wherein the step of urging the AB link aft further comprises drooping of spoilers in association with motion of the flap. 20. A trailing edge flap actuation mechanism comprising: a linkage pair havinga first four bar linkage including a grounded link fixed to a wing,a connection link hinged to the ground link at a first end,a support beam first portion hinged to the ground link at a second end, anda first link attached to the connection link and support beam first portion opposite the ground link,the first four bar linkage providing a hinged mounting for a second four bar linkage including the first link in common with the first four bar linkage,a flap support beam connected to the first link, anda second link connected to the flap support beam and to a second portion of the support beam. 21. A trailing edge flap actuation mechanism as described in claim 20 farther comprising a rotary actuator having a crank arm connected to the first link. 22. A trailing edge flap actuation mechanism comprising: a four bar linkage slaved to a six bar linkage, the four bar linkage incorporating a first link,a flap support beam attached to the first link,a second link attached to the flap support beam and a second portion of a support beam,the six bar linkage incorporating three grounded binary links including a first portion of the support beam, a connection link and a crank arm extending from a rotary actuator, anda ternary link interconnecting the grounded binary links, said ternary link integral with said first link.

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Aircraft flap mechanism having compact large fowler motion providing multiple cruise positions

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Aircraft flap mechanism having compact large fowler motion providing multiple cruise positions

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