CN102582825A - Sealing mechanism for plane wing surfaces - Google Patents

Abstract

A sealing mechanism used on the surface of an aircraft wing includes an upper sealing mechanism and a lower sealing mechanism which are independent respectively. The sealing mechanism includes a rear sealing strip, a slide rail, a pulley, a pulley support arm, a middle sealing strip, a hinge and a front sealing strip, and is assembled with the wing and the flap by riveting, and moves along with the deflection of the flap. Action, effectively seal the gap between the wing and the flap, and can always maintain the sealing effect during the deflection of the flap. The step difference between the end of the sealing strip and the wing is small; the movable sealing strip and the flap are connected by a hinge, and the gap and step difference at the hinge are small, which can ensure the aerodynamic performance of the wing surface and the stealth performance of the aircraft. When the flaps are retracted, the outer surface profile of the sealing strip matches the profile of the airfoil, ensuring the best aerodynamic performance. When the flaps are lowered, the transition between the wings and the flaps is smooth without sharp knuckles, which delays the separation of airflow at high angles of attack, ensures the aerodynamic performance of the aircraft, and has the characteristics of simple structure and long service life.

Description

A sealing mechanism for aircraft wing surface

technical field

The invention relates to the field of aircraft wing design, in particular to a sealing mechanism for the surface of an aircraft wing.

Background technique

In order to improve the flight performance of the aircraft, some modern aircraft currently use simple leading edge maneuvering flaps on the leading edge of the wing. During the flight of the aircraft, the lowered position of the flaps is automatically adjusted by the rotary actuator according to the flight speed and angle of attack. The rotary actuators are respectively connected to the wings and the flaps through the lugs. However, when the flaps are deflected downward, a large gap will be produced between the flaps and the main wing surface, and this gap will have an adverse effect on the stealth performance and aerodynamic performance of the aircraft.

At present, some aircraft adopt a sealing strip fixed to the flap on the upper wing surface and the lower wing surface respectively to seal the gap between the wing and the flap. In this solution, the sealing strip is a flexible metal plate, and its end is attached to the outer surface of the wing by pre-deformation or other methods. When the flaps are deflected, the wing surface forces the seal to deform. The problems of this technical scheme are: one, because the actuator lugs are relatively large, the upper airfoil sealing strip near the lugs will be upturned when the flap is lowered, causing the sealing strip to not be tightly sealed. 2. When the flap is deflected downward, the sealing strip on the lower wing surface is greatly deformed. Since the position of the leading edge flap changes at any time during the flight of the aircraft, after a period of flight, the sealing strip will crack due to repeated bending, and the service life is short. 3. The step difference between the end of the sealing strip and the theoretical shape of the wing surface is large, which affects the stealth effect of the aircraft.

The U.S. No. 3974978 patent has described a kind of stepped blowing flap, and it adopts a set of sealing mechanism to seal the gap between the wing and the flap at the lower surface of the wing. In this solution, the sealing plate is connected to the wing through a hinge, and its end is attached to the outer surface of the flap, and a spring is installed between the sealing strip and the wing to keep the end of the sealing strip in contact with the flap. The sealing strip has a certain degree of elasticity. During the deflection process of the flap, it is also bent to a certain extent under the action of the spring tension while rotating around the hinge, so as to establish a continuous and smooth connection between the wing and the flap. . However, the disadvantages of this solution are: 1. The aerodynamic force on the sealing strip is relatively large, and a large spring tension is required to ensure that the end of the sealing strip is attached to the flap, which requires a spring with a large elastic coefficient to provide the required tension , so the required spring size is larger. However, because the wings are generally thin and the space between the wings and the flaps is tight, it is difficult to install springs with larger dimensions here. Two, when the flap deflection angle is large, the length that the spring needs to be stretched is relatively large, which requires a long spring free length, which also brings difficulties to the application of the spring. Three, because the elastic coefficient of the spring is relatively large, the space is tight, and the assembly of the spring needs special tools, which brings inconvenience to the assembly and maintenance of this kind of sealing mechanism. Four, the hinge form between sealing strip and the wing is simple, causes still to have bigger gap between sealing strip and wing, and this also has bigger adverse effect to the stealth performance of aircraft. 5. The structure of the sealing strip is simple. When the flaps are retracted, the theoretical shape of the wing airfoil will be destroyed, which will affect the flight performance of the aircraft.

Contents of the invention

In order to overcome the poor sealing of the fixed structure sealing strip, the short service life of the sealing strip, the large step difference between the end of the sealing strip and the wing, the poor sealing of the existing sealing mechanism at its hinge, the difficulty in using the spring, and the damage to the theoretical shape of the airfoil In view of the disadvantages, the present invention proposes a sealing mechanism for the surface of an aircraft wing.

The present invention includes sealing strips, pulleys, slide rails, hinge joints and pulley arms; wherein:

a. The sealing strip includes the sealing strip in front of the upper wing, the sealing strip in the upper wing, the rear sealing strip in the upper wing, the sealing strip in front of the lower wing, the rear sealing strip in the lower wing and the sealing strip in the lower wing; The sealing strip in front of the upper wing, the rear sealing strip of the upper wing and the middle sealing strip of the upper wing are respectively located at the front, rear and middle of the gap between the upper wing and the flap, and the front sealing strip of the lower wing, the lower wing The rear sealing strip and the sealing strip in the lower wing surface are respectively located at the front, rear and middle of the gap between the wing and the lower wing surface of the flap; the length of each sealing strip is the same as the spanwise length of the flap, and each sealing strip The outer surfaces of both are the same curved surface as the wing airfoil;

b. The slide rail includes an upper airfoil slide rail and a lower airfoil slide rail; and the upper airfoil slide rail is fixed on the inner side of the upper airfoil rear sealing strip; the lower airfoil slide rail is fixed on the lower airfoil rear sealing strip inside of

c. The pulley includes an upper airfoil pulley and a lower airfoil pulley; the hinge joint includes an upper airfoil hinge joint and a lower airfoil hinge joint; the pulley arm includes an upper airfoil pulley arm and a lower airfoil pulley arm; the upper The airfoil hinge joint is fixed on the inner side of the sealing strip in front of the upper airfoil, and is connected with the upper airfoil pulley support arm, and the upper airfoil pulley is installed at the end of the pulley support arm; Inner side, the two ends of the upper airfoil pulley support arm are respectively connected with the upper airfoil hinge joint located inside the upper airfoil front sealing strip and the upper airfoil pulley located inside the upper airfoil rear sealing strip; the lower airfoil hinge joint is fixed on the lower The inner side of the sealing strip in front of the airfoil, the lower airfoil hinge joint is connected with the lower airfoil pulley arm, and the lower airfoil pulley is installed at the end of the pulley arm; the lower airfoil pulley is fixed on the inner side of the sealing strip in the lower airfoil A support arm, the two ends of the lower wing pulley support arm are respectively connected to the lower wing hinge joint located inside the front sealing strip of the lower wing and the lower wing pulley located inside the rear sealing strip of the lower wing;

d. The sealing strip in front of the upper wing is fixed on the overlapping concave step of the upper wing surface of the flap, and the long side of the rear side of the sealing strip in front of the upper wing overlaps with the sealing strip in the upper wing surface; The two long sides of the sealing strip overlap with the front sealing strip of the upper wing and the rear sealing strip of the upper wing respectively; The sealing strip in the airfoil overlaps and transitions smoothly; the sealing strip in front of the lower wing is fixedly connected to the overlapping concave step of the lower wing surface of the flap, and the long side of the rear side of the sealing strip in front of the lower wing is sealed with the middle of the lower wing surface. Strip overlap; the two long sides of the sealing strip in the lower wing are respectively overlapped with the front sealing strip of the lower wing and the rear sealing strip of the lower wing; the rear sealing strip of the lower wing is fixedly connected to the lower wing In the overlapping concave steps of the surface.

The end face at the rear long side of the sealing strip in front of the upper wing is an arc surface, the axis of the arc surface is the rotation axis of the upper wing hinge, and the radius of the arc is slightly larger than that at the front long side of the sealing strip in the upper wing. The arc radius of the end surface; the outer side of the arc end surface on the rear side of the sealing strip in front of the upper wing has a cut angle; the length of the sealing strip in the upper wing surface is the same as the spanwise length of the flap.

The end surface at the long side of the front side of the sealing strip in the upper airfoil is an arc surface, the axis of the arc surface is the rotation axis of the upper airfoil hinge, and the radius is slightly smaller than the end surface at the long side of the rear sealing strip in front of the upper airfoil. arc radius.

The end face at the overlapping long side of the sealing strip in front of the lower wing and the sealing strip in the lower wing is an arc surface, the axis of the arc is the rotation axis of the hinge of the lower wing, and the radius of the arc is slightly larger than that of the sealing strip in the lower wing. The arc radius of the end face at the long edge of the front side of the bar.

The end surface at the long side of the front side of the sealing strip in the lower wing surface is an arc surface, the axis of the arc surface is the rotation axis of the hinge of the lower wing surface, and the radius is slightly smaller than that of the end surface at the rear long side of the sealing strip in front of the lower wing surface. arc radius.

The upper airfoil slide rail and the lower airfoil slide rail are all curved rods, and the curvature of the curvature matches the inner surfaces of the upper airfoil rear sealing strip and the lower airfoil rear sealing strip respectively. The airfoil pulley and the lower airfoil pulley are located in the upper airfoil slide rail and the lower airfoil slide rail respectively.

One end of the upper airfoil pulley arm has a connection hole hinged with the upper airfoil hinge joint, and one end of the lower airfoil pulley arm has a connection hole hinged with the lower airfoil hinge joint.

The invention is a mechanism for sealing the gap between the surface of the aircraft wing and the surface of the leading edge flap, which can be installed in the limited space of the thin wing, and can always maintain the sealing effect during the flap deflection process, and A mechanism that makes the transition between the surface of the wing and the surface of the flap smoother.

The present invention has a set of sealing mechanisms on the upper and lower surfaces of the wing respectively, and is assembled together with the wing and the flap respectively. The rear sealing strip in the sealing mechanism is fixed on the upper and lower wing surfaces of the wing, the front sealing strip in the sealing mechanism is connected with the flap, and the middle sealing strip in the sealing mechanism is connected with the front sealing strip by hinges respectively. The shape of each sealing strip is adapted to the shape of the wing and the flap, so that the connection between the sealed wing and the surface of the flap is continuous and smooth, and the sealing effect can always be maintained during the deflection of the flap. The theoretical shape of the airfoil is not destroyed.

Due to the technical solution adopted by the present invention, the gap between the wing and the flap can be effectively sealed, and the sealing effect can always be maintained during the deflection process of the flap. The step difference between the end of the sealing strip and the wing is small; each part does not need to be deformed, fatigue cracks are not easy to occur, and the service life is long. The movable sealing strip and the flap are connected by a hinge, and the gap and step difference at the hinge are small, which can ensure the aerodynamic performance of the wing surface and the stealth performance of the aircraft. When the flaps are retracted, the outer surface profile of the sealing strip matches the profile of the airfoil, ensuring the best aerodynamic performance. When the flaps are lowered, the transition between the wings and the flaps is smooth without sharp knuckles, which can delay the occurrence of airflow separation at high angles of attack and better ensure the aerodynamic performance of the aircraft. The sealing mechanism deflects as the flaps deflect, requiring no additional power. The upper and lower sealing mechanisms are a set of independent components, which are only connected with the wing and the flap by means of riveting, which is convenient for assembly.

Description of drawings

Accompanying drawing 1 is the perspective exploded view of the present invention;

Accompanying drawing 2 is a structural representation of the present invention;

Accompanying drawing 3A is the structure schematic diagram of the present invention in the state that flap is retracted;

Accompanying drawing 3B is the structural representation of the present invention in the state that flap is lowered;

Accompanying drawing 4 is the structural representation of upper wing surface hinge when flap is retracted;

Accompanying drawing 5 is the structural representation of upper airfoil hinge when flap is lowered;

Accompanying drawing 6 is the structural representation of lower wing surface hinge when flap is retracted;

Accompanying drawing 7 is the structural representation of lower airfoil hinge when flap is put down;

Accompanying drawing 8 is slide rail cross section;

Accompanying drawing 9 is the overlapping schematic diagram of the middle sealing strip and the rear sealing strip of the upper sealing mechanism when the flaps are retracted. In the figure: 1. Wing 2. Lower wing slide rail 3. Lower wing rear sealing strip 4. Lower wing pulley 5. Lower wing middle sealing strip 6. Lower wing pulley support arm 7. Lower wing hinge Joint 8. Front sealing strip of lower wing 9. Rotary actuator 10. Flap 11. Upper wing pulley 12. Middle sealing strip of upper wing 13. Upper wing pulley support arm 14. Upper wing hinge joint 15. Upper Sealing strip in front of wing 16. Slide rail of upper wing 17. Rear sealing strip of upper wing

Detailed ways

This embodiment is a sealing mechanism for the gap between the surface of the flap of the aircraft and the surface of the wing, including a sealing strip, a pulley, a slide rail, a hinge joint and a pulley support arm. Described sealing strip comprises sealing strip 15 in front of the upper wing, sealing strip 12 in the upper wing surface, sealing strip 17 behind the upper wing surface, sealing strip 8 in front of the lower wing surface, sealing strip 3 behind the lower wing surface and sealing strip in the lower wing surface 5. The slide rails include an upper airfoil slide rail 16 and a lower airfoil slide rail 2 . The pulleys include an upper airfoil pulley 11 and a lower airfoil pulley 4. The hinge joints adopt invisible hinge joints, including upper airfoil hinge joints 14 and lower airfoil hinge joints 7 . The pulley arm includes an upper airfoil pulley arm 13 and a lower airfoil pulley arm 6 . The sealing strip 15 in front of the upper wing, the rear sealing strip 17 of the upper wing and the sealing strip 12 in the upper wing are respectively located at the front, rear and middle of the upper wing slit of the wing 1 and the flap 10, the lower wing The sealing strip 8 in the front, the rear sealing strip 3 of the lower wing surface and the sealing strip 5 in the lower wing surface are respectively located at the front, rear and middle of the wing 1 and the lower wing surface gap of the flap 10, and each of the above-mentioned sealing strips is located at The rotary actuator 9 in the wing 1 is driven by the flap 10 to realize the sealing of the gap between the surface of the wing 1 and the surface of the flap 10 .

The front sealing strip 15 of the upper wing is a strip plate, and its length is the same as that of the flap 10 in the span direction. The sealing strip 15 in front of the upper wing is fixedly connected to the overlapping concave step of the upper wing surface of the flap 10 , and its thickness is the same as the height of the overlapping concave step of the upper wing surface of the flap 10 . In Fig. 4, the long side on the rear side of the sealing strip 15 in front of the upper wing overlaps with the sealing strip 12 in the upper wing surface, and the end surface at the long side of the sealing strip 15 in front of the upper wing is an arc surface, and the arc surface The axis of is the center of rotation of the upper airfoil hinge, and the arc radius is slightly larger than the arc radius of the end face at the front side long side of the sealing strip 12 in the upper airfoil. There is a chamfer on the outer side of the arc-shaped end surface on the rear side of the sealing strip 15 in front of the upper wing. An upper airfoil hinge joint 14 is fixed on the inner side of the sealing strip 15 in front of the upper airfoil. Wing pulley 11.

The sealing strip 12 in the upper airfoil is also a strip-shaped plate, and its length is the same as the spanwise length of the flap 10 . The two long sides of the sealing strip 12 in the upper airfoil overlap with the front sealing strip 15 of the upper airfoil and the rear sealing strip 17 of the upper airfoil respectively. In Fig. 4, the end face at the long side of the front side of the sealing strip 12 in the upper airfoil is an arc surface, the axis of the arc surface is the rotation axis of the upper airfoil hinge, and the radius is slightly smaller than that behind the sealing strip 15 in front of the upper airfoil. The arc radius of the end face at the side long edge. The arc length of the front end surface of the sealing strip 12 in the upper wing surface should ensure that when the flap 10 is fully retracted, the arc-shaped end surface of the sealing strip 12 in the upper wing surface will not interfere with other components; At the same time, the sealing strip 12 in the upper airfoil and the sealing strip 15 in front of the upper airfoil still keep overlapping, and the gap can not be split. In the upper wing surface, the front side of the sealing strip 12 is thicker, and the rear side is thinner. The inner side of the sealing strip 12 in the upper airfoil is fixed with an upper airfoil pulley arm 13, and the two ends of the upper airfoil pulley arm 13 are respectively connected with the upper airfoil hinge joint 14 positioned at the inner side of the sealing strip 15 in front of the upper airfoil. It is connected with the upper airfoil pulley 11 located at the inner side of the upper airfoil rear sealing strip 17 .

The rear sealing strip 17 of the upper airfoil is also a curved strip plate, and its length is the same as the spanwise length of the flap 10 . The rear sealing strip 17 of the upper airfoil is fixedly connected in the overlapping concave step of the lower airfoil of the wing 1 , and the thickness of the rear sealing strip 17 of the upper airfoil is the same as the height of the overlapping concave step of the upper airfoil of the wing 1 . The upper airfoil rear sealing strip 17 has an overlapping concave step of the upper airfoil middle sealing strip 12 on the outer side of its overlap with the upper airfoil middle sealing strip 12, and the overlapping concave step and the upper airfoil middle sealing strip 12 The lapped portion is bent toward the inside of the wing, and the length and curvature of the curved surface must be such that when the flap 10 is fully lowered, the sealing strip 12 on the upper wing surface can still be overlapped on the rear sealing strip 17 on the upper wing surface without interference between the two , the rear sealing strip 17 of the upper airfoil overlaps with the middle sealing strip 12 of the upper airfoil and transitions smoothly. An upper airfoil slide rail 16 is fixed on the inner side of the upper airfoil rear sealing strip 17 .

The sealing strip 15 in front of the upper wing, the part behind the overlapping step of the sealing strip 17 after the upper wing and the outer surface of the sealing strip 12 in the upper wing are all curved surfaces, and the curvature is the same as that of the upper wing surface of the wing airfoil. Same, make above-mentioned sealing strip not destroy the theoretical profile of wing airfoil in the retracted state of flap 10, and make smooth transition between the upper surface of wing 1 after sealing and the upper surface of flap 10, and satisfy the requirement of wing. Pneumatic requirements.

The sealing strip 8 in front of the lower wing is a strip plate whose length is the same as that of the flap 10 in the span direction. The sealing strip 8 in front of the lower wing is fixedly connected to the overlapping concave step of the lower wing of the flap 10 , and the thickness of the sealing strip 8 in front of the lower wing is the same as the height of the overlapping concave step of the lower wing of the flap 10 . The long side on the rear side of the sealing strip 8 in front of the lower wing overlaps with the sealing strip 5 in the lower wing surface, and the end surface at the overlapping long side of the sealing strip 8 in front of the lower wing and the sealing strip 5 in the lower wing surface is an arc surface, The axis of the arc surface is the rotation axis of the lower airfoil hinge, and the arc radius is slightly larger than the arc radius of the end face at the front long side of the sealing strip 5 in the lower airfoil. The outer side of the curved end face of the sealing strip 8 rear side in front of the lower wing has a cut angle, and the size of the cut angle will ensure that when the flap 10 is put down completely, the sealing strip 8 in front of the lower wing does not interfere with the sealing strip in the lower wing surface. The lower airfoil hinge joint 7 is fixed on the inner side of the sealing strip 8 in front of the lower airfoil. Wing pulley 4.

The sealing strip 5 in the lower airfoil is also an elongated plate whose length is the same as the spanwise length of the flap 10 . The two long sides of the sealing strip 5 in the lower airfoil overlap with the front sealing strip 8 of the lower airfoil and the rear sealing strip 3 of the lower airfoil respectively. In Fig. 5, the end face at the long side of the front side of the sealing strip 5 in the lower airfoil is an arcuate surface, the axis of the arcuate surface is the rotation axis of the lower airfoil hinge, and the radius is slightly smaller than that behind the sealing strip 8 in front of the lower airfoil. The arc radius of the end face at the side long edge. The length of the arc of the front side of the sealing strip 5 in the lower wing surface should ensure that when the flap 10 is fully retracted, the sealing strip 5 in the lower wing surface and the sealing strip 8 in front of the lower wing still keep overlapping; When put down, the arc-shaped end surface of the sealing strip 5 in the lower airfoil does not interfere with other components. In the lower wing surface, the front side of the sealing strip 5 is thicker, and the rear side is thinner. The inner side of the sealing strip 5 in the lower airfoil is fixed with the lower airfoil pulley arm 6, and the two ends of the lower airfoil pulley arm 6 are respectively connected with the lower airfoil hinge joint 7 positioned at the inner side of the sealing strip 8 in front of the lower airfoil. It is connected with the lower airfoil pulley 4 positioned at the inner side of the lower airfoil rear sealing strip 3 .

The rear sealing strip 3 of the lower airfoil is also a curved strip plate, and its length is the same as the span length of the flap 10 . The rear sealing strip 3 of the lower airfoil is fixedly connected in the overlapping concave step of the lower airfoil of the wing 1, and the thickness of the rear sealing strip 3 of the lower airfoil is the same as the height of the overlapping concave step of the lower airfoil of the wing 1. The rear side long side of the sealing strip 5 in the lower wing is lapped on the outer surface of the rear sealing strip 3 of the lower wing, and the front end of the rear sealing strip 3 of the lower wing is bent toward the inside of the wing 1, and the curved surface must be able to ensure that the flaps 10 When fully retracted, the long side of the rear side of the sealing strip 5 in the lower wing surface can overlap the curved surface of the lower wing surface rear sealing strip 3 without interference. A lower airfoil slide rail 2 is fixed on the inner side of the lower airfoil rear sealing strip 3 .

The upper surfaces of the sealing strip 8 in front of the lower wing, the sealing strip 5 in the lower wing and the rear sealing strip 3 of the lower wing are all curved surfaces, and the curvature is the same as that of the lower airfoil of the wing airfoil, so that the above sealing strip The theoretical shape of the wing airfoil is not destroyed in the retracted state of the flap 10, so as to meet the aerodynamic requirements of the wing.

The upper airfoil slide rail 16 and the lower airfoil slide rail 2 are all curved rods, the curvature of which is matched with the inner surfaces of the upper airfoil rear sealing strip 17 and the lower airfoil rear sealing strip 3 respectively, and its cross section is "匸" font, as shown in Figure 6. The lengths of the upper airfoil slide rail 16 and the lower airfoil slide rail 2 all meet the motion stroke of the pulleys installed in each slide rail when the flap 10 is fully lowered.

The upper airfoil pulley 11 and the lower airfoil pulley 4 are located in the upper airfoil slide rail 16 and the lower airfoil slide rail 2 respectively. Both the upper airfoil pulley 11 and the lower airfoil pulley 4 are cylindrical pulleys.

The upper airfoil pulley support arm 13 and the lower airfoil pulley support arm 6 are "L" shaped rods, and its cross section is "ten" or "I". One end of the upper airfoil pulley support arm 13 has a connection hole hinged with the upper airfoil hinge joint 14, and one end of the lower airfoil pulley support arm 6 has a connection hole hinged with the lower airfoil hinge joint 7.

The rotary actuator 9 is fixed to the inside of the wing 1 and the flap 10 through its lugs respectively.

In Fig. 1, the wing 1 has overlapping concave steps on the upper and lower airfoils, and a rear sealing strip is installed on the overlapping concave steps. The flap 10 has overlapping concave steps on the upper wing surface and the lower wing surface, and a front sealing strip is installed at the overlapping concave steps. The rotary actuator 9 is respectively connected with the wing 1 and the flap 10 through the lugs. Fig. 2 is a three-dimensional assembly diagram of the sealing mechanism in the flap retracted state, and there are no obvious steps and gaps on the outer surface of the sealing mechanism.

The rear sealing strip 3 of the lower airfoil is bent inward at a distance behind the end of the sealing strip 5 in the lower airfoil, and the curved shape ensures that when the end of the sealing strip 5 in the lower airfoil overlaps the outer surface of the rear sealing strip 3 of the lower airfoil, the lower airfoil The outer surface profile of the middle sealing strip 5 is consistent with the profile curve of the airfoil. The length of the lower airfoil rear sealing strip 3 must ensure that there is no interference between the lower airfoil rear sealing strip 3 and the lower airfoil pulley support arm 6 .

In Fig. 3A, the sealing strip 12 in the upper airfoil is a plate with variable thickness, and its outer surface contour is consistent with the contour curve of the airfoil. The upper airfoil pulley support arm 13 is fixedly connected to the inner side of the sealing strip 12 in the upper airfoil, and for reducing weight, its cross section is I-shaped or cross-shaped. The upper airfoil pulley support arm 13 is "L" shaped so that it does not interfere with the middle sealing strip 12 when the flap 10 is retracted. The lower wing surface pulley support arm 6 will ensure that it does not interfere with the middle sealing strip 5 in the state that the flap 10 is put down. A pulley is respectively installed on the side of the upper airfoil pulley support arm 13 ends.

Figure 3B is a plan view of the present invention with the flaps down. The width of the sealing strip 12 in the upper wing surface must ensure that after the flap 10 is put down completely, the end of the sealing strip 12 in the upper wing surface is still lapped on the outer surface of the rear sealing strip 17 of the upper wing surface. The width of the sealing strip 5 in the lower airfoil must ensure that the lower airfoil pulley 4 does not slip out of the slide rail after the flap 10 is put down completely.

In FIG. 3A , the front sealing strip 8 of the lower wing is installed at the concave step on the lower outer surface of the flap 10 , and the outer surface profile thereof is consistent with the profile curve of the airfoil. The front joint 7 of the lower wing hinge is fixed to the inner side of the sealing strip 8 in front of the lower wing.

FIG. 4 is a plan view of the hinge of the upper sealing mechanism when the flap 10 is retracted, and FIG. 5 is a plan view of the hinge of the upper sealing mechanism when the flap 10 is lowered. The part of the upper airfoil pulley support arm 13 close to the sealing strip 12 in the upper airfoil doubles as a hinge joint. In the retracted state of the flap 10, the arc-shaped part of the sealing strip 12 in the upper wing surface stretches into the inner side of the sealing strip 15 in front of the upper wing. In the state where the flap 10 is lowered, the arc portion of the sealing strip 12 in the upper wing surface is still partly inside the sealing strip 15 in front of the upper wing surface, so that there will be no gap between the sealing strip 12 in the upper wing surface and the sealing strip 15 in front of the upper wing surface. gap.

FIG. 6 is a plan view of the hinge of the lower sealing mechanism when the flap 10 is retracted, and FIG. 7 is a plan view of the hinge of the lower sealing mechanism when the flap 10 is put down. The part of the lower airfoil pulley support arm 6 close to the sealing strip 5 in the lower airfoil doubles as a hinge joint. When the flap 10 is retracted or put down, the arc-shaped surface of the outer surface of the sealing strip 5 in the lower wing surface overlaps with the arc-shaped surface of the inner surface of the sealing strip 8 in front of the lower wing, and there is no interference in the movement.

Fig. 8 is the cross-section of the slide rail, the cylindrical pulley stretches from its opening, and can roll on its inner side upper and lower surfaces. The slide rail is installed on the inner side of the rear sealing strip, and its curved shape is consistent with the curved shape of the rear sealing mechanism. The opening directions of two adjacent sliding rails should be opposite to prevent the pulley from coming out of the sliding rail due to the deformation of the sealing mechanism.

Fig. 9 is the overlapping form of the sealing strip 12 in the upper airfoil and the rear sealing strip 17 of the upper airfoil when the flap 10 is retracted. Since the concave steps of the middle sealing strip 12 of the upper airfoil overlap with the rear sealing strip 17 of the upper airfoil, there is a smooth transition between the middle sealing strip 12 and the rear sealing strip 17 .

Claims (8)

1. a sealing mechanism that is used for the aircraft wing surface is characterized in that, comprises sealing band, pulley, slide rail, knuckle joint and pulley support arm; Wherein:

A. described sealing band comprises in sealing band before the top airfoil, the top airfoil behind sealing band, the top airfoil before sealing band, the lower aerofoil behind sealing band, the lower aerofoil sealing band in the sealing band and lower aerofoil; Before the said top airfoil behind sealing band, the top airfoil in sealing band and the top airfoil sealing band lay respectively at front portion, rear portion and the middle part in wing and wing flap top airfoil slit, behind the preceding sealing band of said lower aerofoil, the lower aerofoil in sealing band and the lower aerofoil sealing band lay respectively at front portion, rear portion and the middle part in wing and wing flap lower aerofoil slit; The length of described each sealing band is identical to length with the exhibition of wing flap, and the outside face of each sealing band is the curved surface identical with Airfoil;

B. slide rail comprises top airfoil slide rail and lower aerofoil slide rail; And said top airfoil slide rail is fixed on the inboard of sealing band behind the top airfoil; Said lower aerofoil slide rail is fixed on the inboard of sealing band behind the lower aerofoil;

C. pulley comprises top airfoil pulley and lower aerofoil pulley; Knuckle joint comprises top airfoil knuckle joint and lower aerofoil knuckle joint; The pulley support arm comprises top airfoil pulley support arm and lower aerofoil pulley support arm; Said top airfoil knuckle joint is fixed on the inboard of the preceding sealing band of top airfoil, and is connected with top airfoil pulley support arm, and pulley support arm end is equipped with the top airfoil pulley; Top airfoil pulley support arm is fixed on the inboard of sealing band in the top airfoil, the two ends of this top airfoil pulley support arm respectively be positioned at top airfoil before the inboard top airfoil knuckle joint of sealing band be positioned at top airfoil after the top airfoil pulley of sealing band inboard be connected; The lower aerofoil knuckle joint is fixed on the inboard of the preceding sealing band of lower aerofoil, and this lower aerofoil knuckle joint is connected with lower aerofoil pulley support arm, and pulley support arm end is equipped with the lower aerofoil pulley; The inboard of sealing band is fixed with lower aerofoil pulley support arm in said top airfoil, the two ends of this lower aerofoil pulley support arm respectively be positioned at lower aerofoil before the inboard lower aerofoil knuckle joint of sealing band be positioned at lower aerofoil after the lower aerofoil pulley of sealing band inboard be connected;

D. sealing band is fixed on the place, overlap joint concave station rank of wing flap top airfoil before the said top airfoil, sealing band overlap joint in the long limit of sealing band rear side and the top airfoil before the top airfoil; In the described top airfoil two of sealing band long limits respectively with top airfoil before sealing band overlap joint behind sealing band and the top airfoil; Sealing band is fixed in the overlap joint concave station rank place of wing top airfoil behind the described top airfoil, and with top airfoil in sealing band overlap joint and smooth transition; Sealing band is fixed in the place, overlap joint concave station rank of wing flap lower aerofoil before the said lower aerofoil, and sealing band overlap joint in the long limit of the preceding sealing band rear side of this lower aerofoil and the lower aerofoil; In the described lower aerofoil two of sealing band long limits respectively with lower aerofoil before sealing band overlap joint behind sealing band and the lower aerofoil; Sealing band is fixed in the overlap joint concave station rank of wing lower aerofoil behind the described lower aerofoil.

2. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface; It is characterized in that; The end face at place, the long limit of sealing band rear side is an arcwall face before the described top airfoil; The axis of arcwall face is the rotation axis of top airfoil hinge, and arc radius is a bit larger tham the arc radius of place, long limit, sealing band front side end face in the top airfoil; There is corner cut in the curved end of the sealing band rear side outside before the top airfoil; The length of sealing band is identical to length with the exhibition of wing flap in the described top airfoil.

3. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface; It is characterized in that; The end face at the place, long limit of sealing band front side is an arcwall face in the described top airfoil; The axis of arcwall face is the rotation axis of top airfoil hinge, and radius is slightly smaller than the arc radius of place, the long limit of the preceding sealing band rear side of top airfoil section.

4. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface; It is characterized in that; The end face that the long limit of sealing band overlap joint is located in sealing band and the lower aerofoil before the said lower aerofoil is an arcwall face; The axis of arcwall face is the rotation axis of lower aerofoil hinge, and arc radius is a bit larger tham the arc radius of place, long limit, sealing band front side end face in the lower aerofoil.

5. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface; It is characterized in that; The end face at the place, long limit of sealing band front side is an arcwall face in the said lower aerofoil; The axis of arcwall face is the rotation axis of lower aerofoil hinge, and radius is slightly smaller than the arc radius of place, the long limit of the preceding sealing band rear side of lower aerofoil section.

6. a kind of according to claim 1 sealing mechanism that is used for aircraft wing surface is characterized in that top airfoil slide rail and lower aerofoil slide rail are the rod member of camber, bending curvature respectively with top airfoil after behind sealing band and the lower aerofoil inside face of sealing band match.

7. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface is characterized in that aerofoil pulley and lower aerofoil pulley lay respectively in top airfoil slide rail and the lower aerofoil slide rail.

8. a kind of according to claim 1 sealing mechanism that is used for the aircraft wing surface; It is characterized in that; One end of said top airfoil pulley support arm has and top airfoil knuckle joint pivotally attached connecting bore, and an end of said lower aerofoil pulley support arm has and lower aerofoil knuckle joint pivotally attached connecting bore.

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