Aircraft air inlet outer surface wave-absorbing coating connecting structure

Abstract

The utility model belongs to the technical field of airplane air inlet duct outer surface wave-absorbing coating connection design, and particularly relates to an airplane air inlet duct outer surface wave-absorbing coating connection structure which comprises an airplane air inlet duct. The wave-absorbing functional layer is adhered to the outer surface of the aircraft air inlet; the plurality of bolt fasteners are connected with the aircraft air inlet channel and the wave-absorbing functional layer; each bolt fastener is made of a low-reflectivity material; and the head of each bolt fastener sinks into the wave-absorbing functional layer.

Description

Technical Field

[0001] The present application belongs to the technical field of design of connection of radar-absorbing coating on the outer surface of aircraft air inlet, and specifically relates to a connection structure of radar-absorbing coating on the outer surface of aircraft air inlet. Background Art

[0002] In order to reduce the reflective performance of the outer surface of the aircraft's air inlet, a wave-absorbing functional layer is often bonded to the outer surface of the air inlet. When the aircraft is flying, the wave-absorbing functional layer bonded to the outer surface of the air inlet will be subjected to long-term and severe erosion by the airflow and high temperature, and it is very easy to fall off, making it difficult to exert the required wave-absorbing performance and having a high maintenance cost.

[0003] This application is proposed in view of the above-mentioned technical defects. Summary of the invention

[0004] The purpose of the present application is to provide a radar-absorbing coating connection structure for the outer surface of an aircraft air inlet, so as to overcome or alleviate at least one of the known technical defects.

[0005] The technical solution of this application is:

[0006] A microwave-absorbing coating connection structure for the outer surface of an aircraft air inlet, comprising:

[0007] Aircraft air intake;

[0008] The wave-absorbing functional layer is bonded to the outer surface of the aircraft air inlet;

[0009] Multiple bolt fasteners connect the aircraft air intake and wave absorbing functional layer;

[0010] Each bolt fastener is made of low reflectivity material;

[0011] The head of each bolt fastener is sunk into the wave absorbing functional layer.

[0012] According to at least one embodiment of the present application, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, the absorbing functional layer is made of glass fiber, carbon fiber or aramid composite material.

[0013] According to at least one embodiment of the present application, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, the head of each bolt fastener is conical.

[0014] According to at least one embodiment of the present application, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, each bolt fastener is made of glass fiber composite material.

[0015] According to at least one embodiment of the present application, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, each bolt fastener is made of carbon fiber composite material.

[0016] According to at least one embodiment of the present application, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, each bolt fastener is made of aramid composite material.

[0017] This application has at least the following beneficial technical effects:

[0018] Provided is a wave-absorbing coating connection structure for the outer surface of an aircraft air inlet. It can be understood by those skilled in the art that, under the premise that the wave-absorbing functional layer is bonded to the outer surface of the aircraft air inlet, the aircraft air inlet and the wave-absorbing functional layer are further connected by a plurality of bolt fasteners, thereby improving the reliability of the connection of the wave-absorbing functional layer to the outer surface of the aircraft air inlet and preventing the wave-absorbing functional layer from falling off. In addition, each bolt fastener is designed to be made of a low-reflectivity material, and the head is sunk into the wave-absorbing functional layer, thereby reducing the vertical reflectivity of each bolt fastener, improving the traveling wave suppression coefficient of the overall structure, and ensuring the wave-absorbing performance of the outer surface of the air inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a connection structure of a radar absorbing coating on the outer surface of an aircraft air inlet provided in an embodiment of the present application;

[0020] in:

[0021] 1-aircraft air inlet; 2-wave absorbing functional layer; 3-bolt fasteners.

[0022] In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be construed as limitations on the present application. DETAILED DESCRIPTION

[0023] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be described in further detail in detail and in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design.

[0024] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall have the usual meanings understood by those of ordinary skill in the art to which this application belongs. The words used in the description of this application to indicate orientation are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. The word "include" used in the description of this application indicates that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0025] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "installation", "connection" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Technical personnel in the field can understand its specific meaning in this application according to the specific circumstances.

[0026] A structure for connecting a wave-absorbing coating on the outer surface of an aircraft air inlet, such as Figure 1 As shown, including:

[0027] Aircraft air intake 1;

[0028] The wave absorbing functional layer 2 is bonded to the outer surface of the aircraft air inlet 1;

[0029] A plurality of bolt fasteners 3 are used to connect the aircraft air inlet 1 and the wave absorbing functional layer 2;

[0030] Each bolt fastener 3 is made of a low reflectivity material;

[0031] The head of each bolt fastener 3 is sunk into the wave absorbing functional layer 2 .

[0032] As for the aircraft air inlet outer surface wave-absorbing coating connection structure disclosed in the above-mentioned embodiment, it can be understood by those skilled in the art that, under the premise that the wave-absorbing functional layer 2 is bonded to the outer surface of the aircraft air inlet 1, the aircraft air inlet 1 and the wave-absorbing functional layer 2 are further connected by a plurality of bolt fasteners 3, thereby improving the reliability of the connection of the wave-absorbing functional layer 2 to the outer surface of the aircraft air inlet 1 and preventing the wave-absorbing functional layer 2 from falling off. In addition, each bolt fastener 3 is designed to be made of a low-reflectivity material, and the head thereof is sunk into the wave-absorbing functional layer 2, thereby reducing the vertical reflectivity of each bolt fastener 3, improving the traveling wave suppression coefficient of the overall structure, and ensuring the wave-absorbing performance of the outer surface of the air inlet.

[0033] In some optional embodiments, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, the absorbing functional layer 2 is made of glass fiber, carbon fiber or aramid composite material, and can also be made of other materials with absorbing ability.

[0034] In some optional embodiments, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, the head of each bolt fastener 3 is conical and the surface is smooth and flat.

[0035] In some optional embodiments, in the above-mentioned aircraft air inlet outer surface absorbing coating connection structure, each bolt fastener 3 is made of glass fiber composite material, carbon fiber composite material or aramid composite material, and can also be made of other low reflectivity materials.

[0036] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In the absence of conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0037] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A radar absorbing coating connection structure for the outer surface of an aircraft air inlet, characterized in that: include: Aircraft air intake (1); The wave absorbing functional layer (2) is bonded to the outer surface of the aircraft air inlet (1); A plurality of bolt fasteners (3) connecting the aircraft air inlet (1) and the wave absorbing functional layer (2); Each bolt fastener (3) is made of a low reflectivity material; The head of each bolt fastener (3) is sunk into the wave absorbing functional layer (2).

2. The aircraft air inlet outer surface absorbing coating connection structure according to claim 1, characterized in that: The wave absorbing functional layer (2) is made of glass fiber, carbon fiber or aramid composite material.

3. The aircraft air inlet outer surface absorbing coating connection structure according to claim 1, characterized in that: The head of each bolt fastener (3) is tapered.

4. The aircraft air inlet outer surface absorbing coating connection structure according to claim 1, characterized in that: Each bolt fastener (3) is made of glass fiber composite material.

5. The aircraft air inlet outer surface absorbing coating connection structure according to claim 1, characterized in that: Each bolt fastener (3) is made of carbon fiber composite material.

6. The aircraft air inlet outer surface absorbing coating connection structure according to claim 1, characterized in that: Each bolt fastener (3) is made of aramid composite material.

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