Missile high-speed water entry head deformation stability augmentation device

Abstract

The invention discloses a missile high-speed water entry head deformation stability augmentation device, and belongs to the field of missile water entry stability augmentation. The device comprises a plurality of sections matched with the head of a guided missile, a lead screw motor, a buckle mechanism, a lead screw ball head, a boss ball head, an elastic sealing sleeve, a motor, a gear and a pulling rack. And the plurality of section bodies are integrally in a streamline shape along the direction of a missile body. The positions where the lead screw motors are installed and the lead screw motors are provided with ball heads, and it is guaranteed that the lead screw motors have enough freedom degree when driving the joint bodies to rotate and deform. The device is installed at the head of a missile, the angle of the bullet is adjusted through the lead screw motor when the missile enters water, and therefore the direction of fluid force borne by the bullet is changed, and it is guaranteed that the posture of the missile is kept stable when the missile enters water; when the missile body of the missile completely enters the water, the elongation of the lead screw is changed to drive the sections to rotate and deform, so that the missile warhead recovers to the original shape, the aerodynamic performance of the missile in the water is improved, and the hitting precision of the missile is improved.

Description

Technical Field

[0001] The invention belongs to the field of missile water entry stabilization, and in particular relates to a missile high-speed water entry head deformation stabilization device. Background Art

[0002] With the advancement of science and technology, various countries have successively developed various anti-ship missiles. Traditional anti-ship missiles are used to attack the part of the hull of surface ships above the waterline after launch, which causes the energy of the missile explosion to act on the ship through the air medium. The new anti-ship missiles change the way they enter the water and attack. After entering the water, they mainly attack the part of the hull below the waterline. This attack method can allow the energy generated by the missile explosion to act directly on the ship through seawater. Compared with traditional anti-ship missiles, the attack effect on ships is more significant and can directly cause the ship to take on water or even sink.

[0003] The head of the new anti-ship missile is a symmetrical shape with the plane where the missile axis is located as the symmetry plane. After the missile is launched, it will tilt into the water in a direction that forms a small angle (acute angle) with the sea level. At this time, the lower side of the missile head will first contact the sea water, which will cause the missile head to be subjected to an asymmetric force from the sea water. This asymmetric force acts on the head of the missile, which will cause the lower side of the missile head to bend upward due to the force, deviate from the original trajectory, and finally drill out of the water, failing to complete the expected strike mission. In addition, after the missile enters the water, the cavitation wrapping distributed around the missile body will prevent the tail or wing (control surface) from completely contacting the sea water, reducing the control ability of the missile, and further causing problems such as unstable attitude after entering the water. Therefore, ensuring the stability of the missile attitude when entering the water at high speed is an important research direction for improving the combat accuracy of the missile. Summary of the invention

[0004] In view of the above problems, the main purpose of the present invention is to provide a missile head deformation stabilization device for high-speed water entry. The device is installed on the missile head. When the missile enters the water, the angle of the warhead is adjusted to change the direction of the fluid force of the seawater on the warhead, thereby ensuring the stability of the missile's posture when entering the water at high speed and preventing trajectory deviation.

[0005] The purpose of the present invention is achieved through the following technical solutions.

[0006] The invention discloses a missile high-speed water entry head deformation stabilization device, comprising a plurality of joints adapted to the missile head, a screw motor, a buckle mechanism, a screw ball head, a boss ball head, an elastic sealing sleeve, a motor, a gear and a pull rack. The plurality of joints are connected by a buckle mechanism, and the plurality of joints are overall streamlined along the missile body direction. The buckle mechanism comprises an upper rack, a torsion spring, an upper plate of the torsion spring, a pin shaft, a spring support and a limit tooth. The elastic sealing sleeve is tightly fitted outside the plurality of joints.

[0007] When the missile enters the water, the elongation of the screw is changed by the screw motor to drive several sections to rotate and deform. When several sections rotate, the upper plates of the torsion springs located on the upper part of the missile warhead move, and under the action of the torsion springs, the upper plates of the torsion springs are re-stuck in the appropriate position of the upper rack. At the same time, when several sections rotate, the upper plates of the torsion springs located at the lower part of the missile warhead remain stationary under the action of the torsion springs, and the upper plates of the torsion springs continue to be stuck on the limit teeth, realizing the change of the direction of the warhead, and then changing the direction of the fluid force of the seawater on the warhead by adjusting the direction of the warhead, thereby ensuring the stability of the missile's posture when entering the water at high speed.

[0008] When the missile body is completely submerged in water, the upper rack in each segment will be driven by the motor, through the meshing between the gear and the pulling rack, so that the pulling rack pulls the upper rack on each segment to rotate a certain angle, thereby achieving misalignment with the upper plate of the torsion spring. The lead screw motor then drives several segments to rotate and deform by changing the elongation of the lead screw, so that the upper plate of the torsion spring is re-engaged in the limit tooth, and the missile warhead returns to its original shape, thereby ensuring that the missile can fly in a straight line in the water, improving the missile's aerodynamic performance in the water, and enhancing the missile's hit accuracy.

[0009] The number, shape and size of the plurality of segments are adapted to the missile head. The shape and structure of the end segment is a conical shell, and the shape and structure of the remaining segments are a truncated cone drum shell.

[0010] Two adjacent segments along the direction from the tail to the head of the missile are defined as the front segment and the rear segment respectively, and the frontmost segment is defined as the first segment and the rearmost segment is defined as the terminal segment.

[0011] A snap mechanism connection method between the front section and the rear section is: the upper rack and the limit tooth are installed on the front section, the limit tooth is connected to the upper rack and installed, there are two spring supports, the two spring supports are installed on the rear section, the torsion spring and the torsion spring upper plate are connected to the spring support through a pin shaft, and the torsion spring upper plate and the pin shaft are rotationally matched, one end of the torsion spring is attached to the rear section, and the other end is attached to the torsion spring upper plate, and the torsion spring upper plate is clamped on the limit tooth.

[0012] The pulling rack is rigidly connected to the upper rack on each node, and limiting bosses are installed on both sides of the pulling rack to limit the freedom of the pulling rack along the axial direction of the motor output shaft through the limiting bosses; the motor is installed on one side of the upper rack, and the gear is installed on the output shaft of the motor, and the gear and the pulling rack are meshed for transmission.

[0013] Preferably, there are four snap-fit ​​mechanisms between the front section and the rear section, arranged at 90° in the circumferential direction.

[0014] There are four screw motors in total, which are arranged at 90° along the circumferential direction, and a spherical concave surface is provided at the bottom of the screw motor.

[0015] The boss ball heads are installed on the boss of the first section, and there are four boss ball heads in total, which are arranged at 90 degrees along the circumferential direction.

[0016] There are four ball heads of the lead screw, which are respectively mounted on the top of the lead screw motor.

[0017] The screw motor is installed on the boss ball head of the first joint body through the spherical concave surface, and the top of the screw motor is installed in the rotary hole of the second end joint body through the screw ball head.

[0018] Beneficial effects:

[0019] 1. The invention discloses a missile high-speed water-entry head deformation stabilization device, which is installed on the head of the missile. When the missile enters the water, the angle of the warhead is adjusted by a lead screw motor, thereby changing the direction of the fluid force on the warhead, preventing the missile head from bending upward, ensuring that the missile maintains a stable posture when entering the water, and does not change the original trajectory of the missile; when the missile body is completely entered into the water, the lead screw motor drives a plurality of segments to rotate and deform by changing the elongation of the lead screw, so that the upper plate of the torsion spring is clamped back to the limit tooth again, so that the missile warhead restores its original shape, thereby ensuring that the missile can fly straight in the water, improving the aerodynamic performance of the missile in the water, and improving the missile's hit accuracy.

[0020] 2. The invention discloses a missile high-speed water-entry head deformation stabilization device, wherein a plurality of segments are overall streamlined in shape along the missile body direction, without generating additional force-bearing surfaces and without generating additional resistance during the missile entering the water.

[0021] 3. The invention discloses a missile high-speed water entry head deformation stabilization device, which has ball heads at the position where the screw motor is installed and on the screw motor, to ensure that the screw motor has sufficient freedom when driving a plurality of sections to rotate and deform, and the screw part will not generate bending moment and torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the installation of the device of the present invention on a missile;

[0023] Figure 2 A schematic diagram of the appearance of the device of the present invention before deformation;

[0024] Figure 3 A schematic diagram of the connection of the device of the present invention before deformation;

[0025] Figure 4 Schematic diagram of the lead screw motor drive of the device of the present invention;

[0026] Figure 5 Schematic diagram of the installation of the lead screw motor of the device of the present invention;

[0027] Figure 6 Schematic diagram of the lead screw motor of the device of the present invention;

[0028] Figure 7 A schematic diagram of the appearance of the device of the present invention after deformation;

[0029] Figure 8 Schematic diagram of the device of the present invention after the lead screw motor is driven and deformed;

[0030] Fig. 9 The connection diagram of the device of the present invention when it returns to its original shape;

[0031] Fig.10 A diagram showing the device of the present invention returning to its original shape after the missile has completely entered the water;

[0032] Among them: 1-first section, 2-second section, 3-third section, 4-fourth section, 5-screw motor, 6-buckle mechanism, 601-upper rack, 602-torsion spring, 603-torsion spring upper plate, 604-pin shaft, 605-spring support, 606-limiting tooth, 7-screw ball head, 8-boss ball head, 9-elastic sealing sleeve, 10-motor, 11-gear, 12-pull rack. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1-Figure 6 As shown, the embodiment discloses a missile high-speed water entry head deformation stabilization device, including a first section 1, a second section 2, a third section 3, a fourth section 4, a screw motor 5, a buckle mechanism 6, a screw ball head 7, a boss ball head 8, an elastic sealing sleeve 9, a motor 10, a gear 11 and a pull rack 12.

[0035] like Figure 1 and Figure 2 As shown, the device of this embodiment is installed in the head of the missile, the first section 1, the second section 2 and the third section 3 are truncated cone drum shells, the fourth section 4 is a conical shell, the first section 1, the second section 2, the third section 3 and the fourth section 4 are sleeved together in sequence, and the overall shape is streamlined along the missile body. The first section 1 is the front section in the invention, and the fourth section 4 is the end section.

[0036] like Figure 3As shown, the first section 1 and the second section 2, the second section 2 and the third section 3, and the third section 3 and the fourth section 4 are all connected via a snap mechanism 6, and the snap mechanism 6 includes an upper rack 601, a torsion spring 602, a torsion spring upper plate 603, a pin 604, a spring support 605 and a limiting tooth 606. The snap mechanism 6 is used to achieve the connection between two adjacent sections before deformation and re-tightening after rotational deformation.

[0037] Take a snap mechanism 6 connection between the second section 2 and the third section 3 as an example: wherein the upper rack 601 and the limit tooth 606 are installed on the second section 2, and the upper rack 601 and the limit tooth 606 are connected and installed; there are two spring supports 605, and the two spring supports 605 are installed on the third section 3; the torsion spring 602 and the torsion spring upper plate 603 are connected to the spring support 605 through a pin 604, and the torsion spring upper plate 603 and the pin 604 are rotationally matched, one end of the torsion spring 602 is attached to the third section 3, and the other end is attached to the torsion spring upper plate 603, and the torsion spring upper plate 603 is stuck on the limit tooth 606.

[0038] There are four buckle mechanisms 6 between the second segment 2 and the third segment 3 , arranged at 90° in the circumferential direction.

[0039] The pulling rack 12 is rigidly connected to the upper rack 601 on each node, and limiting bosses are installed on both sides of the pulling rack 12 to limit the freedom of the pulling rack 12 along the axial direction of the output shaft of the motor 10; the motor 10 is installed on one side of the upper rack 601, and the gear 11 is installed on the output shaft of the motor 10, and meshing transmission can be achieved between the gear 11 and the pulling rack 12.

[0040] like Figure 4 , Figure 5 and Figure 6 As shown, there are four screw motors 5 arranged at 90° along the circumferential direction. A spherical concave surface is provided at the bottom of the screw motor 5. The screw motor 5 is used to provide power for the device of this embodiment during deformation.

[0041] The boss ball heads 8 are mounted on the boss of the first segment 1 . There are four boss ball heads 8 , which are arranged at 90° in the circumferential direction.

[0042] There are four ball heads 7 for the lead screw, which are clearly mounted on the top of the lead screw of the lead screw motor 5 .

[0043] The screw motor 5 is installed on the boss ball head 8 of the first section 1 through the spherical concave surface, and the screw motor 5 rotates by fitting with the spherical concave surface and the boss ball head 8; the top of the screw motor 5 is installed in the rotation hole of the fourth section 4 through the screw ball head 7, and rotates in fit with the rotation hole on the fourth section 4. The boss ball head 8 and the screw ball head 7 ensure that the screw motor 5 has sufficient degrees of freedom when driving the first section 1, the second section 2, the third section 3 and the fourth section 4 to rotate and deform, and the screw will not generate bending moment and torque.

[0044] The elastic sealing sleeve 9 is tightly fitted outside the first section 1, the second section 2, the third section 3 and the fourth section 4, and the elastic sealing sleeve 9 is bonded to the outermost side to play a waterproof role.

[0045] The working method of the missile high-speed water entry head deformation stabilization device disclosed in this embodiment is as follows:

[0046] like Figure 7 and Figure 8 As shown, before the missile head is deformed, the initial position of the torsion spring upper plates 603 of the four joints is stuck on the limit teeth 606. When the missile enters the water, it tilts into the water in a direction that is a certain small angle (acute angle) with the sea level. According to the angle at which the missile enters the water, the lead screw motor 5 drives the first joint 1, the second joint 2, the third joint 3 and the fourth joint 4 to rotate and deform by changing the elongation of the lead screw. When the four joints rotate, the torsion spring upper plates 603 located at the upper part of the missile warhead move, and under the action of the torsion spring 602, the torsion spring upper plates 603 are re-stuck at the appropriate position of the upper rack 601. At the same time, when the four joints rotate, the torsion spring upper plates 603 located at the lower part of the missile warhead remain motionless under the action of the torsion spring 602, and the torsion spring upper plates 603 continue to be stuck on the limit teeth 606, and finally the warhead direction is changed.

[0047] like Fig. 9 , Fig.10 As shown, when the missile body is completely submerged in water, the upper rack 601 in each segment will be pulled by the pulling rack 12 under the action of the motor 10 through the meshing between the gear 11 and the pulling rack 12, so that the pulling rack 12 pulls the upper rack 601 on each segment to rotate a certain angle to achieve misalignment with the torsion spring upper plate 603, and the screw motor 5 then drives the first segment 1, the second segment 2, the third segment 3 and the fourth segment 4 to rotate and deform by changing the elongation of the screw, so that all the torsion spring upper plates 603 located on the upper part of the missile warhead are re-engaged in the limit teeth 606, and finally the missile warhead restores its original shape, thereby ensuring that the missile can fly in a straight line in the water and accurately hit the target.

[0048] The above is only a preferred implementation method of this embodiment, but it is not limited to the above embodiment when it is implemented. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of this embodiment, and these improvements and modifications should also be regarded as the protection scope of this embodiment.

Claims

1. A missile high-speed water entry head deformation stabilization device, characterized by: The invention comprises a plurality of joints adapted to the missile head, a screw motor, a buckle mechanism, a screw ball head, a boss ball head, an elastic sealing sleeve, a motor, a gear and a pull rack; the plurality of joints are connected by the buckle mechanism, and the plurality of joints are overall streamlined along the direction of the missile body; the buckle mechanism comprises an upper rack, a torsion spring, an upper plate of the torsion spring, a pin shaft, a spring support and a limit tooth; the elastic sealing sleeve is tightly fitted outside the plurality of joints; When the missile enters the water, the extension of the lead screw is changed by the lead screw motor to drive several sections to rotate and deform. When several sections rotate, the upper plates of the torsion springs located at the upper part of the missile warhead move. Under the action of the torsion springs, the upper plates of the torsion springs are re-stuck at the appropriate position of the upper rack. At the same time, when several sections rotate, the upper plates of the torsion springs located at the lower part of the missile warhead remain stationary under the action of the torsion springs, and the upper plates of the torsion springs continue to be stuck on the limit teeth, so as to change the direction of the warhead, and then change the direction of the fluid force of the seawater on the warhead by adjusting the direction of the warhead; When the missile body is completely submerged in water, the upper rack in each segment will be pulled by the motor to rotate the upper rack on each segment by a certain angle through the meshing between the gear and the pulling rack, so as to achieve misalignment with the upper plate of the torsion spring. The lead screw motor then drives several segments to rotate and deform by changing the elongation of the lead screw, so that the upper plate of the torsion spring is re-engaged in the limit tooth, so that the missile warhead returns to its original shape, thereby ensuring that the missile can fly straight in the water. The number, shape and size of the several segments are adapted to the missile head; the shape and structure of the end segment is a conical shell, and the shape and structure of the remaining segments are a truncated cone drum shell.

2. A missile high-speed water entry head deformation stabilization device as claimed in claim 1, characterized in that: Two adjacent segments along the direction from the tail to the head of the missile are defined as the front segment and the rear segment respectively, and the frontmost segment is defined as the first segment and the rearmost segment is defined as the terminal segment; A snap mechanism connection method between the front section and the rear section is: the upper rack and the limit tooth are installed on the front section, the limit tooth is connected to the upper rack and installed, there are two spring supports, the two spring supports are installed on the rear section, the torsion spring and the torsion spring upper plate are connected to the spring support through a pin shaft, and the torsion spring upper plate and the pin shaft are rotationally matched, one end of the torsion spring is attached to the rear section, and the other end is attached to the torsion spring upper plate, and the torsion spring upper plate is clamped on the limit tooth.

3. A missile high-speed water entry head deformation stabilization device as claimed in claim 2, characterized in that: The pulling rack is rigidly connected to the upper rack on each node, and limiting bosses are installed on both sides of the pulling rack to limit the freedom of the pulling rack along the axial direction of the motor output shaft through the limiting bosses; the motor is installed on one side of the upper rack, and the gear is installed on the output shaft of the motor, and the gear and the pulling rack are meshed for transmission.

4. A missile high-speed water entry head deformation stabilization device as claimed in claim 3, characterized in that: There are four of the above-mentioned buckle mechanisms between the front segment and the rear segment, arranged at 90° along the circumferential direction; There are four screw motors in total, which are arranged at 90° along the circumferential direction, and a spherical concave surface is provided at the bottom of the screw motor; The boss ball head is mounted on the boss of the first section, and there are four boss ball heads in total, arranged at 90° along the circumferential direction; There are four ball heads of the lead screw, which are respectively mounted on the top of the lead screw motor; The screw motor is installed on the boss ball head of the first joint body through the spherical concave surface, and the top of the screw motor is installed in the rotary hole of the second end joint body through the screw ball head.

Images