CN216671932U

CN216671932U - Low-scattering trailing edge carrier structure

Info

Publication number: CN216671932U
Application number: CN202123444505.1U
Authority: CN
Inventors: 徐荣章; 刘中凯; 马存瑞
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-03
Anticipated expiration: 2031-12-30

Abstract

The application belongs to the field of aircraft stealth structure design, and particularly relates to a low-scattering trailing edge carrier structure. The method comprises the following steps: a trailing edge wave absorbing function; the low-scattering rear edge carrier main body part is of a flat structure and is connected with the first end of the rear edge wave-absorbing functional part; the first low-scattering trailing edge carrier is of a flat structure with a sharp point, is connected with the second end of the main body part of the low-scattering trailing edge carrier to form a first low-scattering trailing edge carrier assembly, and is used for simulating and testing forward incident electromagnetic waves (RCS) of the trailing edge wave absorbing functional part; and the second low-scattering trailing edge carrier is of a flat structure with an elliptical edge, is connected with the second end of the main body part of the low-scattering trailing edge carrier to form a second low-scattering trailing edge carrier assembly, and is used for simulating and testing backward incident electromagnetic waves (RCS) of the trailing edge wave absorbing functional part.

Description

Low-scattering trailing edge carrier structure

Technical Field

The application belongs to the field of aircraft stealth structure design, and particularly relates to a low-scattering trailing edge carrier structure.

Background

In the development of stealth aircraft, RCS (radar scattering cross-sectional area) simulation and test are often required to be performed on stealth structural components such as wing surface functional components such as wing leading edges or wing trailing edges, and low-scattering carriers are generally required to be designed for truly simulating RCS characteristics of the functional components. The low-scattering carrier generally adopts a flat shape, strong scattering such as stronger specular reflection and the like cannot occur in the carrier in an important attention airspace, and whether the design of one low-scattering carrier directly influences the RCS (radar cross section) characteristics of the functional part.

At present, no uniform design standard and universal carrier structure model exist for the low-scattering carrier of the functional part at the rear edge, and particularly, the design of the functional part carrier which is suitable for both forward incident electromagnetic waves and backward incident electromagnetic waves is still blank.

It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to provide a low scattering trailing edge carrier structure to address at least one of the problems of the prior art.

The technical scheme of the application is as follows:

a low scattering trailing edge carrier structure comprising:

a trailing edge wave-absorbing function piece;

the low-scattering rear edge carrier main body part is of a flat structure and is connected with the first end of the rear edge wave-absorbing functional part;

the first low-scattering trailing edge carrier is of a flat structure with a sharp point, is connected with the second end of the main body part of the low-scattering trailing edge carrier to form a first low-scattering trailing edge carrier assembly, and is used for RCS simulation and test of forward incident electromagnetic waves of the trailing edge wave absorbing functional part;

and the second low-scattering trailing edge carrier is of a flat structure with an oval edge, is connected with the second end of the low-scattering trailing edge carrier main body part to form a second low-scattering trailing edge carrier assembly, and is used for simulating and testing backward incident electromagnetic waves (RCS) of the trailing edge wave absorbing functional part.

In at least one embodiment of the present application, the first low-scattering trailing edge carrier and the low-scattering trailing edge carrier body piece are bonded together by a tin foil.

In at least one embodiment of the present application, the second low-scattering trailing edge carrier and the low-scattering trailing edge carrier main body piece are bonded together by a tin foil.

Utility model has the following beneficial technical effects:

the application discloses low scattering trailing edge carrier structure, when perpendicular polarization electromagnetic wave forward incidence, this carrier structure can convert strong mirror scattering into weak cusp scattering, and when horizontal polarization electromagnetic wave backward incidence, this carrier structure can reduce the travelling wave scattering that the edge mutation arouses.

Drawings

FIG. 1 is a schematic view of a low scattering trailing edge carrier body piece according to one embodiment of the present application;

FIG. 2 is a schematic view of a trailing edge wave absorbing function according to an embodiment of the present application;

FIG. 3 is a schematic view of a first low scattering trailing edge carrier according to an embodiment of the present application;

FIG. 4 is a schematic view of a second low scattering trailing edge carrier according to an embodiment of the present application;

FIG. 5 is a schematic illustration of a low scattering trailing edge carrier configuration according to an embodiment of the present application.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are some, but not all embodiments of the disclosure. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.

The present application is described in further detail below with reference to fig. 1 to 5.

The present application provides a low scattering trailing edge carrier structure comprising: the device comprises a trailing edge wave-absorbing functional part B, a low-scattering trailing edge carrier main body part A, a first low-scattering trailing edge carrier C and a second low-scattering trailing edge carrier D.

As shown in FIG. 1, the low-scattering trailing edge carrier main body piece A is of a flat structure and is fixedly connected with the first end of the trailing edge wave-absorbing functional piece B. As shown in fig. 3, the first low-scattering trailing edge carrier C is a flat structure with a sharp point, and the first low-scattering trailing edge carrier C is connected to the second end of the low-scattering trailing edge carrier main body part a to form a first low-scattering trailing edge carrier assembly, and the first low-scattering trailing edge carrier assembly is used for simulating and testing the forward incident electromagnetic wave RCS of the trailing edge wave-absorbing functional part B. As shown in fig. 4, the second low-scattering trailing edge carrier D is a flat structure with an elliptical edge, and is connected to the second end of the low-scattering trailing edge carrier main body part a to form a second low-scattering trailing edge carrier assembly, and the second low-scattering trailing edge carrier assembly is used for simulating and testing backward incident electromagnetic waves RCS of the trailing edge wave-absorbing functional part B.

In the preferred embodiment of the application, the first low-scattering trailing edge carrier C and the low-scattering trailing edge carrier main body part a are bonded together through tin foil to form an electromagnetic wave forward incident low-scattering carrier, so that the trailing edge wave-absorbing functional part B can simulate and test forward incident electromagnetic waves RCS, and the forward electromagnetic wave mirror scattering is converted into sharp point scattering. And forward electromagnetic wave mirror scattering can be converted into sharp point scattering by reasonably adjusting the front edge line of the carrier.

In a preferred embodiment of the application, the second low-scattering trailing edge carrier D and the low-scattering trailing edge carrier main body part a are bonded together through tin foil to form an electromagnetic wave backward incident low-scattering carrier, so that the trailing edge wave-absorbing functional part B can be used for backward incident electromagnetic wave RCS simulation and test to reduce backward electromagnetic wave traveling wave scattering.

The utility model provides a low scattering trailing edge carrier structure, when using, will hang down scattering trailing edge carrier main part A and trailing edge and inhale wave function spare B fixed connection earlier, realize forward and backward low scattering carrier function conversion through changing first low scattering trailing edge carrier C and second low scattering trailing edge carrier D, and in the conversion process, need not dismouting low scattering trailing edge carrier main part A and trailing edge and inhale wave function spare B, the test site of being convenient for uses fast.

The low-scattering trailing edge carrier structure is an airfoil trailing edge carrier structure which is low in RCS (radar cross section) ratio when forward and backward electromagnetic waves enter the carrier structure simultaneously. When the vertically polarized electromagnetic wave is incident in the forward direction, the carrier structure can effectively convert the strong mirror surface scattering into weak cusp scattering; when horizontally polarized electromagnetic waves are incident backwards, the carrier structure can greatly reduce traveling wave scattering caused by edge mutation; through the restructuring of the structural modules, the function conversion of the forward and backward low-scattering carriers is realized quickly, and in the conversion process, the structural functional parts do not need to be disassembled and assembled.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A low scattering trailing edge carrier structure, comprising:

a trailing edge wave absorbing function;

the first low-scattering trailing edge carrier is of a flat structure with a sharp point, is connected with the second end of the main low-scattering trailing edge carrier body part to form a first low-scattering trailing edge carrier assembly, and is used for RCS simulation and test of forward incident electromagnetic waves of the trailing edge wave absorbing functional part;

2. The low-scattering trailing edge carrier structure of claim 1, wherein the first low-scattering trailing edge carrier and the low-scattering trailing edge carrier body piece are bonded together by tin foil.

3. The low-scattering trailing edge carrier structure of claim 1, wherein the second low-scattering trailing edge carrier and the low-scattering trailing edge carrier body piece are bonded together by tin foil.