CN113267092B - Deflection warhead deformation skin structure - Google Patents

Abstract

A deflection warhead deformed skin structure belongs to the technical field of aircraft. The elastic film is sleeved on the outer wall of the deformable cylindrical skeleton, which is used to keep the outer surface of the deflecting warhead smooth, bear the aerodynamic load during the flight of the missile, and transfer the aerodynamic load to the deformable cylindrical skeleton. It is used to withstand the aerodynamic load transmitted by the elastic film and provide the in-plane deformation capability required to deflect the bending deformation of the warhead. The invention can effectively control its in-plane and out-of-plane stiffness to meet the deformation requirements through parameter design, so that it has the characteristics of small driving energy, and can maintain the shape of the warhead under aerodynamic load, thereby maintaining its aerodynamic shape; the deformable cylindrical skeleton The elastic film is laid on the outside to form a deformed skin structure with a smooth surface, good deformation ability in the plane, and a certain bending rigidity outside the plane, while ensuring the air tightness of the deflecting warhead.

Description

Deformation skin structure of a deflection warhead

technical field

The invention relates to a deformed skin structure of a deflecting warhead, and belongs to the technical field of aircraft.

Background technique

Modern warfare puts forward higher and higher requirements for the high efficiency and high precision of weapons, such as the requirements for the maneuverability of projectiles and arrows in the field of supersonic strikes. However, most weapons are still unable to meet the corresponding requirements. The traditional control method of projectile and arrow is mainly controlled by tail and canard, but it has disadvantages such as low control efficiency, long response time and poor maneuverability.

As a new concept of fast-response control method, deflection warhead can deflect the head of the projectile relative to the projectile axis, so as to generate a pressure difference between the windward and leeward sides of the projectile, thereby controlling its flight attitude. Compared with the traditional canard control, the deflection warhead has the advantages of simple missile aerodynamic shape, low resistance and light weight; when the warhead is deflected, the aerodynamic moment generated by the warhead and the hinge moment that deflects the warhead are in the same direction, and the response time is short; The control torque is large, the pitch control efficiency is high, and it still has the characteristics of high control efficiency during supersonic flight.

Deformed skin structures have lower in-plane stiffness and higher out-of-plane bending stiffness. The lower in-plane stiffness allows the skin structure to deform with less driving force, and the higher out-of-plane bending stiffness is used to withstand aerodynamic loads during flight, ensuring the aerodynamic profile of the deflected warhead. The ability to have both bending deformation and load-bearing requirements simultaneously creates conflicting structural requirements. Therefore, inventing a deformable skin structure that meets the deformation and load-bearing requirements is one of the main challenges for deflecting warheads.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the background art, the present invention provides a deformation skin structure of a deflecting warhead. To achieve the above purpose, the present invention adopts the following technical scheme: a deflecting warhead deformed skin structure, comprising a deformable cylindrical skeleton and an elastic adhesive film sleeved on the outer wall of the deformable cylindrical skeleton, the elastic adhesive film is used to keep the The outer surface of the deflecting warhead is smooth, bears the aerodynamic load during the flight of the missile, and transfers the aerodynamic load to the deformable cylindrical skeleton, which is used to bear the aerodynamic load transmitted by the elastic film, and provides The in-plane deformation capability required to deflect the warhead's bending deformation.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention adjusts 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 transverse wall, the thickness of the unit cell, the number of array layers of the unit cell and the number of unit cells in each layer, By changing the deformation capacity and bearing capacity of the deformable cylindrical skeleton, a deformable cylindrical skeleton with a large deformation capacity in the plane and a certain bearing capacity outside the plane can be finally obtained; the in-plane and out-of-plane stiffness can be effectively controlled through parameter design. To meet the deformation requirements, it has the characteristics of small driving energy, and can maintain the shape of the warhead under aerodynamic loads, thereby maintaining its aerodynamic shape;

2. The present invention lays an elastic film on the outside of the deformable cylindrical skeleton to form a deformed skin structure with smooth surface, good deformation ability in the plane, and certain bending rigidity outside the plane, while ensuring the airtightness of the deflecting warhead.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of deformable cylindrical skeleton;

Fig. 3 is the front view of Fig. 2;

Figure 4 is a schematic diagram of the structure of a unit cell.

Detailed ways

The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments, based on the present invention The embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

A deflecting warhead deformed skin structure includes a deformable cylindrical skeleton 1 and an elastic film 2 sleeved on the outer wall of the deformable cylindrical skeleton 1, the elastic film 2 is used to keep the outer surface of the deflecting warhead smooth and withstand the The aerodynamic load during the flight of the missile, and the aerodynamic load is transferred to the deformable cylindrical skeleton 1, which is used to bear the aerodynamic load transmitted by the elastic film 2, and provide the deflection and deformation force of the warhead. The required in-plane deformation capability.

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

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

The present invention first obtains a two-dimensional deformable skeleton by connecting a plurality of unit cells 8 arrays, and then obtains a deformable cylindrical skeleton 1 by bending the two-dimensional deformable skeleton. The structure of the deformable cylindrical skeleton 1 is shown in FIG. 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 includes 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 closed and enclosed. Rectangular structure, the middle part of each said transverse wall 5 is respectively connected with one end of the corresponding first vertical wall 3, and the other end of each said first vertical wall 3 is respectively connected with the corresponding rectangular block 6, each adjacent two The unit cells 8 are all connected by adjacent rectangular blocks 6 , and two adjacent second longitudinal walls 4 are also connected.

The structural deformation parameters of the unit cell 8 include the length and thickness of the first longitudinal wall 3 , the length and thickness of the transverse wall 5 , the number m of array layers of the unit cell 8 , the number n of the unit cells 8 in each layer, and the thickness of the unit cell 8 . Thickness b; the length and thickness of the first longitudinal wall 3 and the length and thickness of the transverse wall 5 are used to adjust the in-plane deformability of the unit cell 8; increase the length of the transverse wall 5, reduce the thickness of the transverse wall 5, increase the first The length of the first vertical wall 3 and the reduction of the thickness of the first vertical wall 3 can increase the in-plane deformation ability of the unit cell 8, thereby increasing the in-plane deformation ability of the deformable cylindrical skeleton 1; the deformation of the deformable cylindrical skeleton It is mainly provided by the tensile deformation of the longitudinal wall and the bending and torsional deformation of the transverse wall. The tensile deformation of the longitudinal wall and the bending deformation of the transverse wall can produce longitudinal deformation, which ensures the in-plane deformation ability of the skin; the array layer of the unit cell 8 The number m is used to adjust the maximum bending deformation angle within the elastic range of the skin; the number n of the unit cells 8 in each layer is used to adjust the gradient of the deformable cylindrical skeleton 1. The number n can be designed as a deformable skin structure with gradient stiffness; the thickness b of the unit cell 8 is used to adjust the bending stiffness of the deformable cylindrical skeleton 1, and increasing the thickness b of the unit cell 8 can effectively increase the The bending rigidity of the deformable cylindrical skeleton 1 is limited, but the width of the deformable cylindrical skeleton 1 cannot be too large due to the limited thickness of the deformable skin.

Among the unit cells 8 connected in the array, the rectangular blocks 6 of the unit cells 8 in the same row are connected with the rectangular blocks 6 of the unit cells 8 in the adjacent row to form a lateral support 7, and the lateral support 7 is used to improve the deformation of the skin. Out-of-plane stiffness.

The deformable cylindrical skeleton 1 is made of domestic nylon white material and is produced by 3D printing technology.

The elastic film 2 is made of rubber.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and range of the equivalents of , are embraced within the invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

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.

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