Wave-absorbing functional layer and airplane air inlet channel connecting structure

Abstract

The utility model belongs to the technical field of connection design of a wave-absorbing functional layer and an aircraft air inlet channel, and particularly relates to a connection structure of the wave-absorbing functional layer and the aircraft air inlet channel. 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, the heads of the bolt fasteners sink into the wave-absorbing functional layer, the head of each bolt fastener and the polish rod section, located on the wave-absorbing functional layer, of the bolt fastener are coated with wave-absorbing coatings, and the polish rod section, located on the aircraft air inlet channel, of each bolt fastener is coated with an anti-corrosion coating.

Description

Technical Field

[0001] The present application belongs to the technical field of design of connection between a wave-absorbing functional layer and an aircraft air inlet, and specifically relates to a structure for connecting a wave-absorbing functional layer and an 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 structure for connecting a wave-absorbing functional layer to an aircraft air inlet, so as to overcome or alleviate at least one of the technical defects of the known ones.

[0005] The technical solution of this application is:

[0006] A wave absorbing functional layer and an aircraft air inlet connection structure, comprising:

[0007] Aircraft air intake;

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

[0009] A plurality of bolt fasteners connect an aircraft air inlet and a wave-absorbing functional layer, wherein the heads of the bolt fasteners are sunk into the wave-absorbing functional layer, and the heads of the bolt fasteners and the bare rod sections thereof at the wave-absorbing functional layer are coated with a wave-absorbing coating, and the bare rod sections of the bolt fasteners at the aircraft air inlet are coated with an anti-corrosion coating.

[0010] According to at least one embodiment of the present application, in the above-mentioned structure for connecting the wave-absorbing functional layer to the aircraft air inlet, the wave-absorbing functional layer is made of glass fiber, carbon fiber or aramid composite material.

[0011] According to at least one embodiment of the present application, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, the head of each bolt fastener is conical.

[0012] According to at least one embodiment of the present application, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, the heads of each bolt fastener and the light rod section located in the wave-absorbing functional layer are coated with a wave-absorbing coating such as a ferrite wave-absorbing coating, a ceramic wave-absorbing coating or a nano wave-absorbing coating.

[0013] According to at least one embodiment of the present application, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, each bolt fastener is located in the bare rod section of the aircraft air inlet part, and the anti-corrosion coating applied is an epoxy resin anti-corrosion coating or a polyolefin anti-corrosion coating.

[0014] This application has at least the following beneficial technical effects:

[0015] Provided is a wave absorbing functional layer and an aircraft air inlet connection structure. The wave absorbing functional layer is bonded to the outer surface of the aircraft air inlet, and 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. The heads of the bolt fasteners are designed to be sunken into the wave absorbing functional layer, and the heads of the bolt fasteners and the light rod sections thereof located in the wave absorbing functional layer are coated with a wave absorbing coating, thereby reducing the vertical reflectivity of the bolt fasteners, improving the traveling wave suppression coefficient of the overall structure, and ensuring the wave absorbing performance of the outer surface of the air inlet. In addition, the light rod sections of the bolt fasteners located in the aircraft air inlet, i.e., the parts prone to corrosion, are designed to be coated with an anti-corrosion coating, thereby ensuring the corrosion resistance of the bolt fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a connection structure between an absorbing functional layer and an aircraft air inlet provided in an embodiment of the present application;

[0017] in:

[0018] 1-aircraft air inlet; 2-wave absorbing functional layer; 3-bolt fasteners.

[0019] 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

[0020] 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.

[0021] 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.

[0022] 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.

[0023] A structure for connecting a wave absorbing functional layer to an aircraft air inlet, such as Figure 1 As shown, including:

[0024] Aircraft air intake 1;

[0025] The wave absorbing functional layer 2 is bonded to the outer surface of the aircraft air inlet 1;

[0026] A plurality of bolt fasteners 3 connect the aircraft air inlet 1 and the wave-absorbing functional layer 2, and the heads of the bolt fasteners 3 are sunk into the wave-absorbing functional layer 2. The heads of the bolt fasteners 3 and the bare rod sections thereof at the wave-absorbing functional layer 2 are coated with a wave-absorbing coating, and the bare rod sections of the bolt fasteners 3 at the aircraft air inlet 1 are coated with an anti-corrosion coating.

[0027] As for the wave-absorbing functional layer and aircraft air inlet 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, so as to improve the reliability of the connection of the wave-absorbing functional layer 2 to the outer surface of the aircraft air inlet 1 and prevent the wave-absorbing functional layer 2 from falling off, and the head of each bolt fastener 3 is designed to be sunken into the wave-absorbing functional layer 2, and the head of each bolt fastener 3 and the light rod section thereof located in the wave-absorbing functional layer 2 are coated with a wave-absorbing coating, so as to reduce the vertical reflectivity of each bolt fastener 3, improve the traveling wave suppression coefficient of the overall structure, and ensure the wave-absorbing performance of the outer surface of the air inlet, and in addition, the light rod section of each bolt fastener 3 located in the aircraft air inlet 1, i.e., the part prone to corrosion, is designed to be coated with an anti-corrosion coating to ensure the corrosion resistance of the bolt fastener 3.

[0028] In some optional embodiments, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, the wave-absorbing functional layer 2 is made of glass fiber, carbon fiber or aramid composite material, and can also be made of other materials with wave-absorbing ability.

[0029] In some optional embodiments, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, the head of each bolt fastener 3 is conical and has a smooth and flat surface.

[0030] In some optional embodiments, in the above-mentioned wave-absorbing functional layer and aircraft air inlet connection structure, the heads of each bolt fastener 3 and the light rod section located in the wave-absorbing functional layer 2 are coated with a wave-absorbing coating such as a ferrite wave-absorbing coating, a ceramic wave-absorbing coating or a nano wave-absorbing coating, and other coatings with wave-absorbing capabilities may also be selected.

[0031] In some optional embodiments, in the above-mentioned wave-absorbing functional layer and the aircraft air inlet connection structure, each bolt fastener 3 is located in the light rod section of the aircraft air inlet 1, and the anti-corrosion coating applied is an epoxy resin anti-corrosion coating or a polyolefin anti-corrosion coating. Other coatings with anti-corrosion capabilities, such as aluminum coatings and chemical passivation coatings, may also be selected.

[0032] 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.

[0033] 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 structure for connecting a wave absorbing functional layer to 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) are connected to an aircraft air intake (1) and a wave absorbing functional layer (2), the heads of which are sunk into the wave absorbing functional layer (2), and the heads of the bolt fasteners (3) and the bare rod sections located at the wave absorbing functional layer (2) are coated with a wave absorbing coating, and the bare rod sections of the bolt fasteners (3) located at the aircraft air intake (1) are coated with an anti-corrosion coating.

2. The wave absorbing functional layer and aircraft air inlet 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 wave absorbing functional layer and aircraft air inlet connection structure according to claim 1, characterized in that: The head of each bolt fastener (3) is tapered.

4. The wave absorbing functional layer and aircraft air inlet connection structure according to claim 1, characterized in that: The wave absorbing coating coated on the head of each bolt fastener (3) and the light rod section located in the wave absorbing functional layer (2) is a ferrite wave absorbing coating, a ceramic wave absorbing coating or a nano wave absorbing coating.

5. The wave absorbing functional layer and aircraft air inlet connection structure according to claim 1, characterized in that: Each bolt fastener (3) is located at the bare rod section of the aircraft air inlet (1), and the anti-corrosion coating applied is an epoxy resin anti-corrosion coating or a polyolefin anti-corrosion coating.

Images