CN107600389B - Method for moving trailing edge flap of guide sliding frame - Google Patents
Method for moving trailing edge flap of guide sliding frame Download PDFInfo
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- CN107600389B CN107600389B CN201710783822.5A CN201710783822A CN107600389B CN 107600389 B CN107600389 B CN 107600389B CN 201710783822 A CN201710783822 A CN 201710783822A CN 107600389 B CN107600389 B CN 107600389B
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Abstract
The invention relates to a method for moving a guide sliding frame type trailing edge flap, and belongs to the field of aircraft design. The method comprises the following steps: determining the initial/takeoff/landing position of a trailing edge flap, including the parameters of a slot track amount, an overlapping amount, a retreating amount and a deflection angle position; secondly, respectively selecting an adjustable point from the position of the lower surface of the leading edge of the flap to the initial/takeoff/landing position of the flap of the trailing edge; thirdly, respectively leading out a straight line segment with equal length which is vertical to the curve of the lower surface of the flap according to the point selected in the second step; fourthly, determining a motion scheme of the guide frame; fifthly, respectively selecting an adjustable point at the trailing edge position of the lower surface of the flap according to the initial/takeoff/landing position; sixthly, respectively leading out a straight line segment with equal length which is vertical to the lower surface curve according to the point selected in the step five; and seventhly, determining a driven rocker arm scheme. The movement method is simple, the control precision is high, the strength of the slide rail is high, and the operation is safe and reliable.
Description
Technical Field
The invention relates to a method for moving a guide sliding frame type trailing edge flap, and belongs to the field of aircraft design.
Background
The trailing edge flap is a movable control surface for improving the lift coefficient of the wing under a takeoff/landing configuration of the airplane and reducing the running distance, in the design process of the trailing edge flap, the design target (such as the maximum lift coefficient increment) of the high lift device is generally determined according to the takeoff and landing performance requirements of the airplane, the form, the plane shape and the like of the high lift device are further determined, then the two-dimensional flap design is carried out, and the position parameters such as the flap appearance, the slot amount, the overlapping amount, the deflection angle and the like are determined. Modern business machines require low take-off and landing speed and short sliding distance, so that the high lift device is required to have strong high lift capacity, and the strong high lift capacity requires a large retreating amount of a trailing edge flap so as to increase the wing area and improve the high lift effect.
The movement scheme of the trailing edge flap of the business aircraft is usually designed according to position parameters such as a slot amount, an overlapping amount, a deflection angle and the like determined by flap design as a target position, and the commonly used movement forms of the trailing edge flap comprise a hinge type, a four-link type, a slide rail-pulley frame type and the like. For the trailing edge flap with large retreating amount, the hinge type and four-link type movement modes are difficult to ensure the key parameters such as the slot amount, the overlapping amount, the deflection angle and the like of the trailing edge flap, and the design target of the large retreating amount cannot be realized; the four-link motion trajectory is complex to select, and the problems of clamping stagnation, abrasion and the like are easy to occur. When the existing single-slit large-retreating type trailing edge flap motion principle scheme is designed, a large amount of time and energy are needed to be spent, and the formed motion scheme often causes the problems that a motion mechanism and an actuation form are complex, the bulge height of the motion mechanism is large, clamping stagnation abrasion is easy to occur, and the like.
Disclosure of Invention
The invention aims to provide a guide sliding frame type trailing edge flap moving method which is simple in moving method, high in control precision, high in sliding rail strength, safe and reliable in operation and free of problems of abrasion, clamping stagnation and the like, and flap movement is realized through rotation of a rocker arm.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of guided slider trailing edge flap movement, the method comprising the steps of:
determining the initial/takeoff/landing position of a trailing edge flap, including the parameters of a slot track amount, an overlapping amount, a retreating amount and a deflection angle position;
secondly, respectively selecting an adjustable point from the position of the lower surface of the leading edge of the flap to the initial/takeoff/landing position of the flap of the trailing edge;
thirdly, respectively leading out a straight line segment with equal length which is vertical to the curve of the lower surface of the flap according to the point selected in the second step;
fourthly, determining a motion scheme of the guide frame;
three end points of the equal-length straight line segment perpendicular to the curve of the lower surface of the flap at the initial/takeoff/landing position are positioned on the same straight line by adjusting the parameters of the equal-length straight line segment perpendicular to the curve of the lower surface of the flap from the lower surface of the leading edge of the flap, the determined straight line is a motion track of a slide block, the guide rail is designed into an I-shaped guide carriage according to the straight line, the slide block is arranged on the guide carriage in a sliding groove mode and moves linearly along the motion track of the formed guide carriage, and the determined motion track of the slide block is a motion scheme of the guide carriage;
fifthly, respectively selecting an adjustable point at the trailing edge position of the lower surface of the flap according to the initial/takeoff/landing position;
sixthly, respectively leading out a straight line segment with equal length which is vertical to the lower surface curve according to the point selected in the step five;
seventhly, determining a scheme of the driven rocker arm;
and determining a circle through three end points of the three straight-line segments determined in the sixth step, wherein the circle center of the determined circle is the rotation center of the driven rocker arm, the connecting line of the determined circle center and the end point of the straight-line segment at the initial position of the trailing edge flap is the scheme of the driven rocker arm, and the rotation center of the driven rocker arm is fixedly connected with the sliding guide frame.
The invention has the beneficial effects that:
the invention provides a simple and feasible method for designing a motion mechanism suitable for a large-retreating-amount trailing edge flap, which has the advantages of simple motion mechanism and actuation form, high control precision, high structural strength, safe and reliable work, no abrasion, no clamping stagnation and the like.
Drawings
FIG. 1 is a schematic view of the trailing edge flap initiation/takeoff/landing two-dimensional scenario position of the present invention;
FIG. 2 is a schematic view of an adjustable point and a straight line segment at the lower surface of the leading edge of the flap of the present invention;
FIG. 3 is a schematic view of the motion scheme of the guide carriage and the slide block of the present invention;
FIG. 4 is an adjustable point and straight line segment at the lower surface of the trailing edge flap of the present invention;
FIG. 5 is a schematic view of the driven rocker arm center of rotation and the rocker arm arrangement of the present invention;
FIG. 6 is a schematic diagram of the trailing edge flap guide slider type motion of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
a large-retreating-amount trailing edge flap guide-sliding frame type motion design method comprises the following steps:
determining initial A/takeoff B/landing C positions of a trailing edge flap, including position parameters such as a slot path amount, an overlapping amount and a deflection angle;
secondly, respectively defining an adjustable point a, an adjustable point a1 and an adjustable point a2 at the position X1 of the lower surface of the flap leading edge according to the initial/takeoff/landing position of the trailing edge flap;
thirdly, respectively leading out a straight line segment which is perpendicular to the lower surface curve and has the same length as L1 according to the points selected in the second step, and determining three endpoints b, b1 and b 2;
and fourthly, determining a motion scheme of the guide frame. By adjusting the parameters of X1 and L1 determined in the second step and the third step, three end points b, b1 and b2 of a straight line segment L1 with equal length at the initial/takeoff/landing position are on a straight line, the determined straight line is the motion trail of the sliding blocks M, M1 and M2, the guide rail N is designed into an I-shaped sliding rail according to the straight line, the sliding blocks M, M1 and M2 are installed on the guide carriage N in a sliding groove mode and can do straight line motion along the formed motion trail of the guide carriage, and the determined motion trail of the sliding blocks M, M1 and M2 is the motion scheme of the guide carriage. In order to ensure that the bulge of the guide sliding frame is as small as possible, the position X1 of the selected point and the length L1 of the straight line segment are only required to be adjusted, and a proper motion track and a proper motion scheme of the guide sliding frame are preferably selected;
fifthly, respectively selecting an adjustable point C, an adjustable point C1 and an adjustable point C2 at the position X2 of the trailing edge of the lower surface of the flap according to the initial A/takeoff B/landing C position;
sixthly, respectively leading out a straight line segment which is perpendicular to the lower surface curve and has the length of L2 according to the points selected in the step five, and determining three end points d, d1 and d 2;
and seventhly, determining a driven rocker arm scheme. And determining a circle through three end points d, d1 and d2 of the three straight line segments determined in the sixth step, wherein the circle center O of the determined circle is the rotation center of the driven rocker arm, and connecting lines of the determined circle center O and the end points d, d1 and d2 of the straight line segments at the initial position of the trailing edge flap are the driven rocker arm scheme. In order to ensure that the rotating center O of the rocker arm is positioned on the guide sliding frame, the positions of points c, c1 and c2 are adjusted only by adjusting the size X2 and the positions of end points d, d1 and d2 are optimized by adjusting the length L2 of the straight line segment, and the rotating center of the driven rocker arm and the scheme of the rocker arm are optimized properly, and the rotating center of the driven rocker arm is fixedly connected with the guide sliding frame.
By the method, the motion principle scheme of the trailing edge flap with large retreating amount can be rapidly determined, and the design method is simple and easy to operate; the formed motion scheme has simple actuation form, high control precision, large structural strength and safe and reliable work.
A guide carriage scheme is designed by utilizing the points and straight line segments of the variable parameters and adopting a three-point determined straight line method. The design method is simple, the operation is easy, and the scheme of the sliding guide frame is reliable.
A driven rocker arm scheme is designed by utilizing points and straight line segments of variable parameters and adopting a three-point rounding method. The design method is simple, the operation is easy, and the scheme of driving the rocker arm is reliable.
The motion principle scheme of the large-retreating-amount flap sliding guide frame is designed by a three-point determined straight line method, and the design method is simple and easy to operate; the formed motion scheme has simple actuation form and mechanism, high control precision, large structural strength and safe and reliable work.
Claims (1)
1. A method of guided slider trailing edge flap movement, the method comprising the steps of:
determining the initial/takeoff/landing position of a trailing edge flap, including the parameters of a slot track amount, an overlapping amount, a retreating amount and a deflection angle position;
secondly, respectively selecting an adjustable point from the position (X1) of the lower surface (X1) of the leading edge of the flap according to the initial/takeoff/landing position of the trailing edge flap;
thirdly, respectively leading out a straight line segment (L1) with equal length which is vertical to the curve of the lower surface of the flap according to the point selected in the second step;
fourthly, determining a motion scheme of the guide frame;
three end points of the equal-length straight line segment (L1) which is perpendicular to the curve of the lower surface of the flap at the initial/takeoff/landing position are positioned on a straight line by adjusting the parameters of the equal-length straight line segment (L1) which is perpendicular to the curve of the lower surface of the flap at the distance from the lower surface of the leading edge of the flap, the determined straight line is a sliding block motion track, the guide rail is designed into an I-shaped guide sliding frame according to the straight line, the sliding block is arranged on the guide sliding frame in a sliding groove mode and moves linearly along the formed guide sliding frame motion track, and the determined sliding block motion track is a guide sliding frame motion scheme;
fifthly, respectively selecting an adjustable point at the position of the trailing edge (X2) of the lower surface of the flap according to the initial/takeoff/landing position;
sixthly, respectively leading out a straight line segment (L2) with equal length which is vertical to the lower surface curve according to the point selected in the step five;
seventhly, determining a scheme of the driven rocker arm;
and determining a circle through three end points of the three straight-line segments determined in the sixth step, wherein the circle center of the determined circle is the rotation center of the driven rocker arm, the connecting line of the determined circle center and the end point of the straight-line segment at the initial position of the trailing edge flap is the scheme of the driven rocker arm, and the rotation center of the driven rocker arm is fixedly connected with the sliding guide frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710783822.5A CN107600389B (en) | 2017-09-04 | 2017-09-04 | Method for moving trailing edge flap of guide sliding frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710783822.5A CN107600389B (en) | 2017-09-04 | 2017-09-04 | Method for moving trailing edge flap of guide sliding frame |
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| CN107600389A CN107600389A (en) | 2018-01-19 |
| CN107600389B true CN107600389B (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710783822.5A Active CN107600389B (en) | 2017-09-04 | 2017-09-04 | Method for moving trailing edge flap of guide sliding frame |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112182932B (en) * | 2020-09-25 | 2022-11-25 | 中国直升机设计研究所 | Method for predicting deflection angle of trailing edge flap of rotor wing in rotation state model |
| CN112699488B (en) * | 2020-12-29 | 2024-02-13 | 中国航空工业集团公司西安飞机设计研究所 | Method for determining position of mechanism space kinematic pair |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043224A (en) * | 2012-12-10 | 2013-04-17 | 江西洪都航空工业集团有限责任公司 | Double-circle method for generating trailing edge flap control surface airfoil leading edge curve |
| CN104354875A (en) * | 2014-10-31 | 2015-02-18 | 中国航天空气动力技术研究院 | High-lift device optimum design method taking motion locus into account |
| CN106347633A (en) * | 2016-09-23 | 2017-01-25 | 江西洪都航空工业集团有限责任公司 | Design method of trailing edge flap rocking-arm type motion |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007055669A1 (en) * | 2007-11-21 | 2009-06-04 | Airbus Deutschland Gmbh | Landing flap kinematics powered by pinion drive |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043224A (en) * | 2012-12-10 | 2013-04-17 | 江西洪都航空工业集团有限责任公司 | Double-circle method for generating trailing edge flap control surface airfoil leading edge curve |
| CN104354875A (en) * | 2014-10-31 | 2015-02-18 | 中国航天空气动力技术研究院 | High-lift device optimum design method taking motion locus into account |
| CN106347633A (en) * | 2016-09-23 | 2017-01-25 | 江西洪都航空工业集团有限责任公司 | Design method of trailing edge flap rocking-arm type motion |
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Address after: Nanchang high tech Industrial Development Zone, Jiangxi Province Patentee after: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. Address before: 330000 Jiangxi city in Nanchang Province, the new bridge box 460 box 5001 Patentee before: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. |
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