CN218703850U

CN218703850U - Tail edge structure

Info

Publication number: CN218703850U
Application number: CN202222838833.8U
Authority: CN
Inventors: 陈超; 贾云超; 李阳; 王明义; 魏伟
Original assignee: Shanghai Aircraft Manufacturing Co Ltd
Current assignee: Shanghai Aircraft Manufacturing Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-24
Anticipated expiration: 2032-10-27

Abstract

The utility model relates to a tail edge technical field specifically discloses tail edge structure, and this tail edge structure includes top panel, lower panel, tail edge strip and outsourcing covering, and the tail edge strip sets up between top panel and lower panel and with top panel and lower panel rigid coupling respectively, and the outsourcing covering is the U-shaped structure, and top panel, lower panel and tail edge strip all insert locate the outsourcing covering and all with outsourcing covering rigid coupling, and the tail edge strip is folded in turn by carbon-fibre composite material layer and the hollow micro-bead layer of glass and is established and solidification moulding. The tail edge strip of this tail edge structure uses carbon-fibre composite material layer and the hollow micro-bead layer of glass to fold in turn and establish and solidification shaping, and then when can guaranteeing tail edge strip self intensity, makes the tail edge strip lightweight, therefore the tail edge strip not only seals upper and lower panel veneer, and tail edge strip self weight can not lead to the fact serious influence to the holistic weight of tail edge moreover.

Description

Tail edge structure

Technical Field

The utility model relates to a trailing edge technical field especially relates to trailing edge structure.

Background

For better handling stability and maneuverability, civil aircraft are often designed with several movable airfoils for lift, drag, roll, pitch, trim, etc., such as flaps, ailerons, spoilers, elevators and rudders. The movable surfaces are arranged at the trailing edge of the wing or the trailing edge of the empennage, and the high-efficiency civil aircraft wing and empennage wing profile are in a convergent state at the tail part from the aerodynamic point of view, namely, the movable surfaces are in a wedge shape at the tail edge.

In the prior art, in the field of airplane structure design, for the design of the tail edge of a wedge-shaped structure, the tail edge is sealed by gluing an upper panel and a lower panel at the tail end of the tail edge, and in the structural form, the height of the tail edge is approximately equal to the sum of the thicknesses of the upper panel and the lower panel. In some types of airplane airfoil structures, according to the aerodynamic requirements of movable airfoils of airplanes, the height of a wedge-shaped tail edge is higher, the thicknesses of an upper panel and a lower panel are thinner, the height of the tail edge is far greater than the sum of the thicknesses of the upper panel and the lower panel, and the tail edge cannot be sealed together through the gluing of an upper panel and a lower panel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the tail edge structure is provided to solve the problems that in the related art, a wedge-shaped tail edge which is formed between an upper panel and a lower panel and is higher than the sum of the thicknesses of the upper panel and the lower panel cannot be sealed through gluing of the upper panel and the lower panel, but the whole weight of the tail edge is seriously influenced through sealing through a solid block-shaped interlayer.

The utility model provides a tail edge structure, this tail edge structure include top panel, lower panel, tail strip and outsourcing covering, the tail strip set up in the top panel with down between the panel and with the top panel with lower panel rigid coupling respectively, the outsourcing covering is the U-shaped structure, the top panel down the panel with the tail strip all inserts and locates the outsourcing covering and all with outsourcing covering rigid coupling, the tail strip is folded in turn by carbon-fibre composite material layer and the hollow micro-bead layer of glass and is established and solidification moulding.

As a preferred technical solution of the trailing edge structure, the structure further includes a plurality of blind-side connection fasteners, the blind-side connection fasteners are arranged at intervals along the length direction of the trailing edge strip, and the blind-side connection fasteners relatively fix the outer covering and the trailing edge strip and alternately fix the upper panel and the lower panel to the trailing edge strip.

As a preferred technical solution of the trailing edge structure, along the length direction of the trailing edge strip, sunken grooves are alternately formed in the surfaces of the trailing edge strip opposite to the upper panel and the lower panel, first openings are formed in the positions of the upper panel and the lower panel opposite to the sunken grooves, respectively, second openings are formed in the positions of the outer covering skin opposite to the first openings, and fastening nuts of the single-sided connection fasteners are arranged in the sunken grooves through the second openings and the first openings.

As the preferable technical scheme of the tail edge structure, the sinking groove is filled with sealant.

As a preferred technical solution of the trailing edge structure, the first opening and the second opening are filled with the sealant.

As a preferable technical solution of the trailing edge structure, the vehicle door further includes a plurality of covers for closing the second openings.

As a preferable technical scheme of the tail edge structure, the outer wrapping skin is made of a conductive material.

As a preferred technical solution of the trailing edge structure, the outer skin is glued to the corresponding upper panel and the corresponding lower panel, respectively.

As a preferable technical scheme of the tail edge structure, the tail edge strip is glued with the upper panel.

As a preferable technical scheme of the tail edge structure, the tail edge strip is glued with the lower panel.

The utility model has the advantages that:

the utility model provides a tail edge structure, this tail edge structure include top panel, lower panel, tail strip and outsourcing covering, the tail strip set up between top panel and lower panel and with top panel and lower panel rigid coupling respectively, the outsourcing covering is the U-shaped structure, top panel, lower panel and tail strip all insert locate the outsourcing covering and all with outsourcing covering rigid coupling, the tail strip is folded in turn by carbon-fibre composite material layer and the hollow micro-bead layer of glass and is established and solidification moulding. This tail edge structure can guarantee when tail edge strip self intensity, makes the tail edge strip lightweight to the inertia to the control surface influences and diminishes, has reduced the risk that the aircraft takes place to shimmy, has guaranteed the security of aircraft. Meanwhile, the strength of the tail edge structure can be enhanced while the upper panel and the lower panel are further sealed by using the outer wrapping skin.

Drawings

FIG. 1 is a first cross-sectional view of a trailing edge structure according to an embodiment of the present invention;

fig. 2 is a second cross-sectional view of the trailing edge structure in the embodiment of the present invention.

In the figure:

1. an upper panel; 2. a lower panel; 21. a first opening; 3. a tail edge strip; 31. sinking a groove; 4. wrapping a skin; 41. a second opening; 5. a blind-mate fastener; 6. and (5) sealing the glue.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example one

As shown in fig. 1 and 2, the present embodiment provides a trailing edge structure, which includes an upper panel 1, a lower panel 2, a trailing edge strip 3 and an outer covering skin 4, wherein the trailing edge strip 3 is disposed between the upper panel 1 and the lower panel 2 and is fixedly connected to the upper panel 1 and the lower panel 2, the outer covering skin 4 is in a U-shaped structure, the upper panel 1, the lower panel 2 and the trailing edge strip 3 are all inserted into the outer covering skin 4 and are all fixedly connected to the outer covering skin 4, and the trailing edge strip 3 is formed by alternately stacking carbon fiber composite material layers and glass hollow micro-bead layers. This tail edge strip 3 of tail edge structure uses carbon-fibre composite material layer and the hollow micro-pearl layer of glass to fold in turn and establishes and form, and then when can guaranteeing 3 self intensity of tail edge strip, makes 3 lightweight of tail edge strip, and 3 weights of tail edge strip are lighter more, and the tail edge structure weight gain is littleer to just less to the inertia of control surface influence, reduced the risk that the aircraft takes place to shimmy, guaranteed the security of aircraft. Meanwhile, the strength of the tail edge structure can be enhanced while the upper panel 1 and the lower panel 2 are further sealed by using the outer wrapping skin 4.

Optionally, the trailing edge structure further includes a plurality of blind-side connection fasteners 5, the plurality of blind-side connection fasteners 5 are arranged at intervals along the length direction of the trailing edge strip 3, and the plurality of blind-side connection fasteners 5 relatively fix the outer covering skin 4 and the trailing edge strip 3 and alternately fix the upper panel 1 and the lower panel 2 with the trailing edge strip 3. In this embodiment, the unable nailing problem of trailing edge structure has been solved to this kind of mechanical connection mode, and this structure has guaranteed pneumatic appearance (prevents pier nose protrusion outsourcing covering 4) better when guaranteeing its fixed strength. The blind attachment fastener 5 is prior art and will not be described in detail herein.

Alternatively, along the length direction of the tail edge strip 3, sunken grooves 31 are alternately arranged on the surfaces of the tail edge strip 3 opposite to the upper panel 1 and the lower panel 2 respectively, first openings 21 are arranged at the positions of the upper panel 1 and the lower panel 2 opposite to the sunken grooves 31 respectively, second openings 41 are arranged at the positions of the outer covering skin 4 opposite to the first openings 21, and fastening nuts of the single-sided connection fastening pieces 5 are arranged in the sunken grooves 31 through the second openings 41 and the first openings 21. In this embodiment, the blind-side connection fastener 5 penetrates through the outer skin 4 and the upper panel 1 (the lower panel 2) and then enters the sinking groove 31, the convex end of the blind-side connection fastener abuts against the outer skin 4, a special installation tool is used for acting on the blind-side connection fastener 5 located in the sinking groove 31, and then a pier head is formed in the sinking groove 31 to realize fixed connection. This setting can prevent that the shaping pier nose protrusion in outsourcing covering 4, has guaranteed the aerodynamic configuration.

Optionally, the sinking groove 31 is filled with the sealant 6. In this embodiment, the sealant 6 can prevent external rain water and acidic gas from corroding and oxidizing the inside of the trailing edge structure through the sink groove 31.

Optionally, the first opening 21 and the second opening 41 are filled with the sealant 6. In this embodiment, the sealant 6 is flush with the side of the outer skin 4 away from the tail strip 3. The purpose of this arrangement is to ensure the aerodynamic profile of the trailing edge structure.

Optionally, the outer skin 4 is made of an electrically conductive material. In this embodiment, the outer skin 4 is made of an electrically conductive material, which in turn allows the conduction of electric current in order to protect the relevant structures of the aircraft against lightning strikes.

Optionally, the trailing edge structure further includes a flow guide strip, and the flow guide strip is fixedly connected with the outer covering skin 4. In this embodiment, the tie bars function as conductive paths. The diversion strips are used for conducting current on the outer covering skin 4 to the metal joints and further conducting the current from the metal joints to the main structure.

Optionally, the outer skin 4 is glued to the corresponding upper and

lower panels

1, 2, respectively. In this embodiment, the outer skin 4 is bonded to the corresponding upper panel 1 and lower panel 2 by using a normal temperature curing adhesive.

Optionally, the trailing edge strip 3 is glued to the upper panel 1 or the lower panel 2. In this embodiment, the glue used is a normal temperature curing adhesive, and the arrangement can fix the trailing edge strip 3 with the upper panel 1 or the lower panel 2, so as to play a role in positioning.

Example two

This embodiment is substantially the same as the first embodiment except that a plurality of covers for closing the second openings 41 are further included. The upper surfaces of the plurality of covers are flush with the side of the outer skin 4 remote from the tail strip 3. In the first embodiment, the second opening 41 is closed by the sealant 6.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The tail edge structure is characterized by comprising an upper panel (1), a lower panel (2), a tail edge strip (3) and outer packaging skins (4), wherein the tail edge strip (3) is arranged between the upper panel (1) and the lower panel (2) and is fixedly connected with the upper panel (1) and the lower panel (2) respectively, the outer packaging skins (4) are U-shaped structures, the upper panel (1) is arranged between the lower panel (2) and the tail edge strip (3) are inserted into the outer packaging skins (4) and are fixedly connected with the outer packaging skins (4), and the tail edge strip (3) is formed by alternately stacking carbon fiber composite material layers and glass hollow micro-bead layers and is cured.

2. The trailing edge structure according to claim 1, further comprising a plurality of blind-side connection fasteners (5), wherein the plurality of blind-side connection fasteners (5) are arranged at intervals along the length direction of the trailing edge strip (3), and wherein the plurality of blind-side connection fasteners (5) relatively fix the outer covering skin (4) and the trailing edge strip (3) and alternately fix the upper panel (1) and the lower panel (2) with the trailing edge strip (3).

3. The trailing edge structure according to claim 2, characterized in that along the length direction of the trailing edge strip (3), sunken grooves (31) are alternately provided on the faces of the trailing edge strip (3) opposite to the upper panel (1) and the lower panel (2), respectively, first openings (21) are provided at positions of the upper panel (1) and the lower panel (2) opposite to the sunken grooves (31), respectively, second openings (41) are provided at positions of the outer skin (4) opposite to the first openings (21), and fastening nuts of the single-sided connection fasteners (5) are provided in the sunken grooves (31) through the second openings (41) and the first openings (21).

4. A trailing edge structure according to claim 3, wherein the countersink (31) is filled with a sealant (6).

5. A trailing edge structure according to claim 4, characterized in that the first opening (21) and the second opening (41) are filled with the sealing glue (6).

6. A trailing edge structure according to claim 4, further comprising a plurality of covers for closing the second opening (41).

7. The trailing edge structure according to claim 1, characterized in that the outer skin (4) is made of an electrically conductive material.

8. A trailing edge structure according to any one of claims 1-7, characterized in that the outer skin (4) is glued to the corresponding upper panel (1) and lower panel (2), respectively.

9. A trailing edge structure according to any one of claims 1-7, wherein the trailing edge strip (3) is glued to the top panel (1).

10. A trailing edge structure according to any one of claims 1-7, wherein the trailing edge strip (3) is glued to the lower panel (2).