Anti-bird-strike aircraft leading edge laying layer structure

Abstract

The invention belongs to the technical field of airplane structure design, and particularly relates to a bird-strike-resistant airplane leading edge laying layer structure. The aircraft leading edge paving layer structure comprises a leading edge outer panel (1), a front edge outer panel (2), a front edge outer panel (3), a front edge outer panel (4), a front edge outer panel (5) and a rear edge outer panel (6), the inner reflecting plate (3) comprises two layering plate surfaces, one sides of the two layering plate surfaces are in butt joint to form a sharp corner, the sharp corner directly faces the foremost part of the arc, and the other sides of the two layering plate surfaces are connected to the arc tail part of the front edge outer panel (1); and the sandwich (2) is arranged in an area enclosed by the front edge outer panel (1) and the inner reflecting plate (3). The wave absorbing capacity of the leading edge of the wing is improved, and meanwhile the bird impact resistance is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of aircraft structure design, and in particular relates to a bird-strike resistant aircraft leading edge ply structure. Background Art

[0002] As a key component of an aircraft, the research on the anti-bird strike of the aircraft leading edge structure is a very important research topic. Conventional anti-bird strike designs mainly include the use of metal leading edge skins, the installation of anti-bird strike plates in the leading edge, etc. When the aircraft leading edge needs to consider both the wave absorption function and the anti-bird strike design, it is limited by the limited internal space of the leading edge. It is impossible to use metal skins, nor is it possible to install anti-bird strike plates in the leading edge. Therefore, a new aircraft leading edge structure that can achieve the above functions is urgently needed. Summary of the invention

[0003] In order to solve the above problems, the present application provides a bird-strike resistant aircraft leading edge ply structure, which mainly includes:

[0004] The front edge outer panel has an arc-shaped cross section, and has a frontmost portion located in the middle of the arc, and a tail portion extending from the frontmost portion to both sides of the rear;

[0005] The inner reflector comprises two ply panels butted at one side to form a sharp angle, the sharp angle facing the frontmost part of the arc, and the other sides of the two ply panels connected to the arc-shaped tail part of the leading edge outer panel;

[0006] A sandwich core is arranged in the area enclosed by the front edge outer panel and the inner reflection plate.

[0007] Preferably, the front edge outer panel is made of aramid material.

[0008] Preferably, the front edge outer panel is made of quartz material.

[0009] Preferably, the sharp angle between the butting surfaces of two ply boards of the internal reflection board is less than 90°.

[0010] Preferably, the inner reflection plate includes a first material layer and a second material layer, the first material layer is made of aramid material or quartz material, and the second material layer is made of carbon fiber material.

[0011] Preferably, the first material layer and the second material layer are each laid with multiple layers.

[0012] Preferably, the core is a wave-absorbing honeycomb.

[0013] The present application improves the wave absorbing capability of the leading edge of the wing and simultaneously improves the bird strike resistance capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the leading edge cross section of a preferred embodiment of the bird-strike resistant aircraft leading edge ply structure of the present application.

[0015] Figure 2 This application Figure 1 Schematic diagram of the internal reflection plate layering of the illustrated embodiment.

[0016] Among them, 1 is the front edge outer panel, 2 is the core, 3 is the inner reflection plate, 4 is the first material layer, and 5 is the second material layer. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the implementation of this application will be described in more detail in combination with the drawings in the implementation of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and cannot be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in combination with the drawings.

[0018] The present application provides a bird-strike resistant aircraft leading edge ply structure, such as Figure 1-Figure 2 As shown, it mainly includes:

[0019] The front edge outer panel 1 has an arc-shaped cross section, and has a frontmost portion located in the middle of the arc, and a rear portion extending from the frontmost portion to both sides of the rear;

[0020] The inner reflector 3 comprises two ply panels butted at one side to form a sharp angle, the sharp angle facing the frontmost part of the arc, and the other sides of the two ply panels connected to the arc-shaped tail part of the front edge outer panel 1;

[0021] A core 2 is arranged in the area enclosed by the front edge outer panel 1 and the inner reflector 3 .

[0022] In the present application, the inner reflector 3 is made into a sharp-angle structure to disperse the bird body and achieve the purpose of preventing bird strikes.

[0023] In some optional embodiments, the front edge outer panel 1 is made of aramid material.

[0024] In some optional embodiments, the front edge outer panel 1 is made of quartz material.

[0025] In the above embodiments, the use of aramid material or quartz material can improve the structural strength of the leading edge of the aircraft and improve the bird strike resistance capability.

[0026] In some optional embodiments, the sharp angle between two ply board surfaces of the internal reflection plate 3 is less than 90°.

[0027] In some optional embodiments, the internal reflection plate 3 includes a first material layer 4 and a second material layer 5, the first material layer 4 is made of aramid material or quartz material, and the second material layer 5 is made of carbon fiber material.

[0028] In this embodiment, the aramid material or quartz material of the first material layer 4 has high strength and can achieve the purpose of bird strike resistance. The carbon fiber material used in the second material layer 5 has the characteristic of being wave-proof and reflects electromagnetic waves, thereby achieving a wave absorbing function.

[0029] In some optional embodiments, the first material layer 4 and the second material layer 5 are each laid with multiple layers. In this embodiment, the bird strike resistance and wave absorption capabilities are further improved by laying multiple material layers.

[0030] In some optional embodiments, the sandwich core 2 is a wave-absorbing honeycomb. In this embodiment, the wave-absorbing honeycomb further improves the wave-absorbing ability of the leading edge of the aircraft.

[0031] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A bird strike resistant aircraft leading edge ply structure, characterized in that: include: The front edge outer panel (1) has an arc-shaped cross section, and comprises a frontmost portion located in the middle of the arc, and a rear portion extending from the frontmost portion to both sides of the rear; The inner reflector (3) comprises two plywood surfaces butted at one side to form a sharp angle, the sharp angle facing the frontmost part of the arc, and the other sides of the two plywood surfaces connected to the arc-shaped tail part of the front edge outer panel (1); A sandwich core (2) is arranged in the area enclosed by the front edge outer panel (1) and the inner reflection plate (3).

2. The bird strike resistant aircraft leading edge ply structure according to claim 1, characterized in that: The front edge outer panel (1) is made of aramid material.

3. The bird strike resistant aircraft leading edge ply structure according to claim 1, characterized in that: The front edge outer panel (1) is made of quartz material.

4. The bird strike resistant aircraft leading edge ply structure according to claim 1, characterized in that: The sharp angle between the two ply board surfaces of the internal reflection board (3) is less than 90 degrees.

5. The bird strike resistant aircraft leading edge ply structure according to claim 1, characterized in that: The internal reflection plate (3) comprises a first material layer (4) and a second material layer (5); the material used in the first material layer (4) is aramid material or quartz material, and the material used in the second material layer (5) is carbon fiber material.

6. The bird strike resistant aircraft leading edge ply structure according to claim 5, characterized in that: The first material layer (4) and the second material layer (5) are each laid with multiple layers.

7. The bird strike resistant aircraft leading edge ply structure according to claim 1, characterized in that: The core (2) is a wave-absorbing honeycomb.

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