CN113267092B

CN113267092B - Deflection warhead deformation skin structure

Info

Publication number: CN113267092B
Application number: CN202110613849.6A
Authority: CN
Inventors: 李鹏; 尹维龙; 邹留笑; 王鑫; 李建军; 李宜彬
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-07-15
Anticipated expiration: 2041-06-02
Also published as: CN113267092A

Abstract

A deflection warhead deformation skin structure belongs to the technical field of aircrafts. The elastic adhesive film is sleeved on the outer wall of the deformable cylinder framework and used for keeping the outer surface of the deflection bullet smooth, bearing the pneumatic load in the flying process of the guided missile and transferring the pneumatic load to the deformable cylinder framework, and the deformable cylinder framework is used for bearing the pneumatic load transmitted by the elastic adhesive film and providing the in-plane deformation capability required by the bending deformation of the deflection bullet. The invention can effectively control the in-plane rigidity and the out-plane rigidity to meet the deformation requirement through parameter design, so that the bullet has the characteristic of small driving energy, and can maintain the shape of the bullet under pneumatic load, thereby keeping the pneumatic appearance of the bullet; an elastic adhesive film is laid outside the deformable cylinder framework to form a deformable skin structure with smooth surface, good deformation capacity in the surface and certain bending rigidity outside the surface, and meanwhile, the air tightness of the deflection warhead is guaranteed.

Description

Deflection warhead deformation skin structure

Technical Field

The invention relates to a deflection warhead deformation skin structure, and belongs to the technical field of aircrafts.

Background

Modern wars place ever-increasing demands on the efficiency and accuracy of weapons, such as the maneuverability of projectiles and arrows in the field of supersonic blows. However, most weapons do not meet the corresponding requirements. The traditional rocket control mode mainly adopts a tail wing and canard control mode, but has the defects of low control efficiency, long response time, poor maneuverability and the like.

The deflection warhead is a new concept of quick response control mode, and can deflect the head of a rocket relative to a warshaft, so that the windward side and the leeward side of the rocket generate pressure difference, and the flying attitude of the rocket is controlled. Compared with the traditional canard control, the deflection warhead has the advantages of simple pneumatic appearance, small resistance and light weight of the missile; when the warhead deflects, the pneumatic moment generated by the warhead and the hinge moment for deflecting the warhead are in the same direction, and the response time is short; the control moment generated by the deflection of the warhead is large, the pitching control efficiency is high, and the characteristics of high control efficiency are still achieved during supersonic speed flight.

The morphing skin structure has a lower in-plane stiffness and a higher out-of-plane bending stiffness. The lower in-plane stiffness allows the skin structure to deform under less driving force, and the higher out-of-plane bending stiffness is used for bearing the pneumatic load in the flight process, so that the pneumatic appearance of the deflection warhead is ensured. The ability to simultaneously provide bending deformation and load bearing requirements can create conflicting structural requirements, and therefore, inventing a deformed skin structure that meets the deformation and load bearing requirements is one of the major challenges facing the deflected warhead.

Disclosure of Invention

In order to solve the problems in the background art, the invention provides a deflection warhead deformation skin structure. The invention adopts the following technical scheme: the utility model provides a shell structure is warp to bullet that deflects, includes flexible drum skeleton and the elastic adhesive film of cover at flexible drum skeleton outer wall, the elastic adhesive film is used for keeping the surface fairing of bullet that deflects, bears the pneumatic load of guided missile flight in-process to shift pneumatic load to on the flexible drum skeleton, flexible drum skeleton is used for bearing the pneumatic load that the elastic adhesive film transmitted and comes, and provides the required interior deformability of deflecting bullet bending deformation.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the deformation capability and the bearing capability of the deformable cylinder framework are changed by adjusting parameters such as the length of the first longitudinal wall, the thickness of the first longitudinal wall, the length of the transverse wall, the thickness of the unit cell, the number of the array layers of the unit cell, the number of the unit cells on each layer and the like, and finally the deformable cylinder framework with larger deformation capability in the plane and certain bearing capability outside the plane can be obtained; the in-plane rigidity and the out-plane rigidity of the bullet can be effectively controlled through parameter design to meet the deformation requirement, so that the bullet has the characteristic of small driving energy, and the shape of the bullet can be maintained under pneumatic load, thereby keeping the pneumatic appearance of the bullet;

2. according to the invention, the elastic adhesive film is laid outside the deformable cylinder framework to form the deformable skin structure with smooth surface, good deformation capability in the surface and certain bending rigidity out of the surface, and meanwhile, the air tightness of the deflection warhead is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a deformable cylindrical skeleton;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a schematic diagram of a unit cell.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

The utility model provides a deflection warhead warp skin structure, includes flexible drum skeleton 1 and cover and establishes the elasticity glued membrane 2 at flexible drum skeleton 1 outer wall, elasticity glued membrane 2 is used for keeping the surface smoothness of deflection warhead, bears the aerodynamic load of guided missile flight in-process to shift to on the flexible drum skeleton 1 with aerodynamic load, flexible drum skeleton 1 is used for bearing the aerodynamic load that the transmission of elasticity glued membrane 2 was come, and provides the required in-plane deformability of deflection warhead bending deformation.

The deformable cylindrical framework 1 is formed by bending and enclosing a two-dimensional deformable framework.

The two-dimensional deformable skeleton comprises a plurality of array-connected unit cells 8.

The invention firstly obtains a two-dimensional deformable framework by connecting a plurality of unit cells 8 in an array manner, and then obtains a deformable cylindrical framework 1 by bending the two-dimensional deformable framework, wherein the structure of the deformable cylindrical framework 1 is shown in figure 2. The deformable cylindrical skeleton 1 is composed of an array of unit cell 8 structures as shown in fig. 3.

The unit cell 8 comprises two first longitudinal walls 3, two second longitudinal walls 4, two transverse walls 5 and two rectangular blocks 6; the two second longitudinal walls 4 and the two transverse walls 5 are enclosed to form a rectangular structure, the middle of each transverse wall 5 is connected with one end of the corresponding first longitudinal wall 3, the other end of each first longitudinal wall 3 is connected with the corresponding rectangular block 6, every two adjacent unit cells 8 are connected through the adjacent rectangular blocks 6, and the two adjacent second longitudinal walls 4 are also connected.

The structural deformation parameters of the unit cells 8 comprise the length and the thickness of the first longitudinal wall 3, the length and the thickness of the transverse wall 5, the number m of the array layers of the unit cells 8, the number n of the unit cells 8 in each layer and the thickness b of the unit cells 8; the length and thickness of the first longitudinal wall 3 and the length and thickness of the transverse wall 5 are used for adjusting the in-plane deformability of the unit cell 8; the length of the transverse wall 5 is increased, the thickness of the transverse wall 5 is reduced, the length of the first longitudinal wall 3 is increased, and the thickness of the first longitudinal wall 3 is reduced, so that the in-plane deformability of the unit cell 8 can be increased, and the in-plane deformability of the deformable cylindrical framework 1 is increased; the deformation of the deformable cylinder framework is mainly provided by the stretching deformation of the longitudinal wall and the bending and twisting deformation of the transverse wall, and the longitudinal deformation can be generated by the stretching deformation of the longitudinal wall and the bending deformation of the transverse wall, so that the in-plane deformability of the skin is ensured; the array layer number m of the unit cells 8 is used for adjusting the maximum bending deformation angle in the skin elasticity range; the number n of the single cells 8 on each layer is used for adjusting the gradient of the deformable cylindrical framework 1, and the deformable skin structure with gradient rigidity can be designed by adjusting the number n of the single cells 8 on each layer of the cylindrical framework; the thickness b of the unit cell 8 is used for adjusting the bending rigidity of the deformable cylindrical framework 1, the bending rigidity of the deformable cylindrical framework 1 can be effectively increased by increasing the thickness b of the unit cell 8, but the width of the deformable cylindrical framework 1 cannot be too large due to the fact that the thickness of a deformable skin is limited to a certain extent.

Rectangular blocks 6 of the unit cells 8 in the same row in the unit cells 8 connected in the array are connected with rectangular blocks 6 of the unit cells 8 in the adjacent row to form a transverse support 7, and the transverse support 7 is used for improving the out-of-plane rigidity of the deformation skin.

The deformable cylinder framework 1 is made of a domestic nylon white material and is manufactured through a 3D printing technology.

The elastic adhesive film 2 is made of rubber.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The utility model provides a deflection warhead warp skin structure which characterized in that: the missile based on the two-dimensional deformable frameworks (1) comprises a deformable cylindrical framework (1) and a single cell (8) which is formed by two single cell (8) comprising two first longitudinal walls (3), two second longitudinal walls (4), two transverse walls (5) and two rectangular blocks (6); the two second longitudinal walls (4) and the two transverse walls (5) are enclosed to form a rectangular structure, each transverse wall (5) is connected with one end of the corresponding first longitudinal wall (3), the other end of each first longitudinal wall (3) is connected with the corresponding rectangular block (6), and every two adjacent unit cells (8) are connected through the adjacent rectangular blocks (6).

2. The structure of a deflecting warhead deforming skin, according to claim 1, wherein: the structural deformation parameters of the unit cells (8) comprise the length and the thickness of the first longitudinal wall (3), the length and the thickness of the transverse wall (5), the number of the array layers of the unit cells (8), the number of the unit cells (8) on each layer and the thickness of the unit cells (8); the length and thickness of the first longitudinal wall (3) and the length and thickness of the transverse wall (5) are used for adjusting the in-plane deformability of the unit cell (8); the array layer number of the unit cells (8) is used for adjusting the maximum bending deformation angle in the elastic range of the skin; the number of the unit cells (8) of each layer is used for adjusting the gradient of the deformable cylindrical framework (1); the thickness of the unit cell (8) is used for adjusting the bending rigidity of the deformable cylindrical framework (1).

3. The structure of a deflecting warhead deforming skin of claim 2, wherein: rectangular blocks (6) of the unit cells (8) in the same row in the unit cells (8) connected in the array are connected with rectangular blocks (6) of the unit cells (8) in the adjacent row to form a transverse support (7), and the transverse support (7) is used for improving the out-of-plane rigidity of the deformation skin.

4. The structure of a deflecting warhead deforming skin according to claim 1 or 3, wherein: the deformable cylinder framework (1) is made of nylon.

5. The structure of a deflecting warhead deforming skin according to claim 1 or 3, wherein: the elastic adhesive film (2) is made of rubber.