A method to circumvent tank active protection systems and achieve efficient damage.

Abstract

This invention discloses a method for achieving efficient damage to tanks by circumventing their active protection systems. The method includes: after the seeker locks onto the target, a virtual target point is set at a fixed distance along the range direction, using the actual coordinates of the target point as a reference; the missile tracks the virtual target using proportional guidance; after the missile reaches the virtual target point, the yaw channel continues to track the target using proportional guidance, while the pitch channel abandons the execution of guidance commands and switches to constant altitude flight; upon entering the guidance blind zone, the missile flies at maximum speed and constant altitude while the fuze is activated; the fuze detection module identifies vulnerable parts of the tank and calculates the detonation time based on the missile-target rendezvous position; the fuze detonates the main stage warhead with a delay, and the secondary warhead detonates after a predetermined delay, achieving efficient damage to the tank. This method enables efficient damage to main battle tanks, solving the problem of significantly reduced combat effectiveness when anti-tank missiles attack main battle tanks equipped with active protection systems.

Description

Technical Field

[0001] This invention relates to the field of guidance and control technology, specifically to a method for evading tank active protection systems to achieve efficient damage, applicable to attacking main battle tanks equipped with active protection systems. Background Technology

[0002] To further enhance the battlefield survivability of tanks, countries have continuously improved and upgraded their self-protection capabilities. In addition to strengthening the main armor's protection and adding advanced reactive armor and other passive protection, active and passive protection systems have been installed, giving tanks and other armored vehicles multi-layered protection capabilities at different distances and over a wider area, posing a new and significant threat to anti-tank missiles. The new generation of anti-tank missiles is primarily designed to penetrate reactive armor, and is still in the early stages of addressing how to penetrate active protection systems. Therefore, new methods must be adopted to enable anti-tank missiles to counter active protection systems.

[0003] After thoroughly investigating the technical characteristics of main battle tanks equipped with active protection systems, the inventors proposed a method to circumvent the active protection of tanks and achieve efficient damage. Summary of the Invention

[0004] This invention provides a method for circumventing tank active protection systems to achieve efficient damage. This method can achieve efficient damage to main battle tanks and solves the problem that the combat effectiveness of anti-tank missiles is greatly reduced when attacking main battle tanks equipped with active protection systems.

[0005] The present invention adopts the following specific technical solution:

[0006] A method for circumventing tank active protection systems to achieve efficient damage, the method comprising the following steps:

[0007] The first step is to lock onto the target with the seeker head, and then set a fixed distance in the firing direction as a virtual target point, based on the actual coordinates of the target point.

[0008] The second step involves the missile tracking the virtual target using proportional guidance.

[0009] The third step is that after the missile is guided to the virtual target point, the yaw channel still uses proportional guidance to track the target, while the pitch channel abandons the execution of guidance commands and changes to constant altitude level flight. The altitude of the constant altitude level flight is greater than the active protection distance of the tank, thereby avoiding the active protection range of the tank.

[0010] The fourth step is to enter the guidance blind zone, and then fly at a fixed altitude at maximum speed while simultaneously activating the fuse.

[0011] The fifth step involves using the fuse detection module to identify vulnerable parts of the tank and calculating the detonation time t based on the projectile-target intersection position.

[0012] The sixth step involves detonating the main warhead after a ts delay, followed by detonating the secondary warhead after a predetermined delay, thus achieving highly efficient damage to the tank.

[0013] Furthermore, in the first step, the method for determining the virtual target point is as follows:

[0014] x2=x1-x t ;

[0015] y2 = y1;

[0016] z2 = z1;

[0017] Where x1, y1, and z1 are the coordinates of the real target point in the launch coordinate system, and x2, y2, and z2 are the coordinates of the virtual target point in the launch coordinate system. t Set the distance in the range direction in the launch coordinate system and x t ≤2km.

[0018] Furthermore, in the third step, the altitude for level flight is set to H, where H > 20m.

[0019] Furthermore, in the fifth step, the detonation time of the warhead is calculated using the following formula:

[0020] X1 = V D H / V EFP ;

[0021] X = X1 + X2 + X3 + X4;

[0022] t = X / V D ;

[0023] Among them, V D V is the terminal velocity of the missile. EFP X is the initial velocity of the damage element, X is the actual distance between the missile and the target at the time of detonation, X1 is the horizontal distance between the damage element and the tank when the damage element hits the tank under ideal conditions, X2 is the distance deviation caused by missile attitude control error, X3 is the distance deviation caused by fuze detection error, X4 is the distance deviation caused by detonation control error, and t is the warhead detonation time.

[0024] Furthermore, the scheduled time is 6μs.

[0025] Furthermore, in the sixth step, the warhead is a tandem double explosively formed warhead consisting of a primary EFP (explosive formed projectile) warhead and a secondary EFP warhead. The two warheads are detonated alternately to avoid the influence of the primary EFP warhead detonation on the projectile's attitude, thereby ensuring the hit accuracy of the damage element after the secondary EFP warhead detonates.

[0026] Beneficial effects:

[0027] The method for achieving efficient damage by evading tank active protection systems provided by this invention employs a constant-altitude level flight top attack mode, with the altitude of the level flight exceeding the active protection distance of the tank. At the selected constant-altitude level flight altitude, the active protection range of the tank can be avoided. Combined with guided missile attacks and explosively formed projectile warheads, the method attacks the vulnerable top parts of the tank while evading its active protection, achieving efficient damage to the main battle tank. This solves the problem of significantly reduced combat effectiveness when anti-tank missiles attack main battle tanks equipped with active protection systems.

[0028] Meanwhile, the two-stage warheads detonate at intervals, which can avoid the impact of the main stage warhead detonation on the projectile's attitude, thereby ensuring the accuracy of the damage element after the secondary warhead detonates. Attached Figure Description

[0029] Figure 1 This is a flowchart illustrating the method of the present invention for circumventing tank active protection systems to achieve efficient damage. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, this embodiment provides a method for circumventing active tank protection to achieve efficient damage. The method includes the following steps:

[0032] After locking onto the target, the seeker tracks the target using proportional guidance.

[0033] Using the actual coordinates of the target point as a reference, a virtual target point is set at a fixed distance along the firing direction; the method for determining the virtual target point is as follows:

[0034] x2=x1-x t ;

[0035] y2 = y1;

[0036] z2 = z1;

[0037] Where x1, y1, and z1 are the coordinates of the real target point in the launch coordinate system, and x2, y2, and z2 are the coordinates of the virtual target point in the launch coordinate system. t Set the distance in the range direction in the launch coordinate system and x t ≤2km;

[0038] After the missile is guided to the virtual target point, the yaw channel still uses proportional guidance to track the target.

[0039] The pitch channel abandons the execution of guidance commands and switches to constant altitude flight. The constant altitude flight altitude is greater than the active protection distance of the tank. Since the maximum detection range of the current main battle tank is 20m, the constant altitude flight altitude is greater than 20m to avoid the active protection range of the tank. The constant altitude flight altitude can be set to be greater than 20m, such as 30m.

[0040] After entering the guidance blind zone, the missile maintains a fixed altitude and flies at maximum speed while the fuse is activated.

[0041] After the fuse detects the target, the detonation time of the tandem EFP warhead is calculated based on the relative pose of the warhead and the target. The method for calculating the detonation time of the warhead is as follows:

[0042] X1 = V D H / V EFP ;

[0043] X = X1 + X2 + X3 + X4;

[0044] t = X / V D ;

[0045] Among them, V D V is the terminal velocity of the missile. EFP X represents the initial velocity of the damage element, X represents the actual distance between the missile and the target at the time of detonation, X1 represents the horizontal distance between the damage element and the tank when the damage element hits the tank under ideal conditions, X2 represents the distance deviation caused by the missile attitude control error, X3 represents the distance deviation caused by the fuze detection error, X4 represents the distance deviation caused by the detonation control error, and t represents the detonation time of the tandem EFP warhead.

[0046] After a delay calculation of the detonation time, the tandem EFP warhead is detonated on the top of the tank, attacking the weak armor on the top of the tank and achieving efficient damage to the tank. After the main stage EFP warhead is detonated, the secondary EFP warhead is detonated after a predetermined time, which can be 6 μs. That is, the secondary EFP warhead detonates 6 μs after the main stage EFP warhead is detonated. The detonation time of the two stages of warheads is 6 μs. Within this time interval, the detonation of the main stage EFP warhead will not have a significant impact on the projectile attitude, thus ensuring the hit accuracy of the damage element after the secondary warhead is detonated. The dual EFP warheads can improve the hit probability of the damage element.

[0047] The aforementioned method of evading tank active protection to achieve efficient damage employs a constant-altitude level flight top attack mode. The constant-altitude level flight altitude is greater than 20m. Since the maximum active protection distance of mainstream foreign main battle tanks is 20m, the active protection range of the tank can be avoided at the selected constant-altitude level flight altitude. Combined with the guidance and control tactics and the explosively formed projectile warhead, the tank's weak top part is attacked while evading its active protection, thus achieving efficient damage to the main battle tank.

[0048] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A method for circumventing tank active protection systems to achieve efficient damage, characterized in that, Includes the following steps: The first step is that after the seeker locks onto the target, a virtual target point is set at a fixed distance along the firing direction, using the actual coordinates of the target point as a reference. The method for determining the virtual target point is as follows: x 2= x 1- x t ； y 2= y 1； z 2= z 1； in, x 1. y 1. z 1 represents the actual target point coordinates in the launch coordinate system. x 2. y 2. z 2 represents the coordinates of the virtual target point in the launch coordinate system. x t Set the distance in the range direction under the launch coordinate system and x t ≤2km; The second step involves the missile tracking the virtual target using proportional guidance. The third step is that after the missile is guided to the virtual target point, the yaw channel still uses proportional guidance to track the target, while the pitch channel abandons the execution of guidance commands and changes to constant altitude level flight. The altitude of the constant altitude level flight is greater than the active protection distance of the tank, thereby avoiding the active protection range of the tank. The fourth step is to enter the guidance blind zone, and then fly at a fixed altitude at maximum speed while simultaneously activating the fuse. The fifth step involves using a fuse detection module to identify vulnerable parts of the tank and calculating the detonation time based on the projectile's encounter position. t ; Warhead detonation time t The following formula is used for calculation: X 1= V D H / V EFP ； X = X 1+ X 2+ X 3+ X 4； t = X / V D ； in, V D For the missile's terminal velocity, V EFP To destroy the initial velocity, X This represents the actual distance between the missile and the target at the time of detonation. X 1 represents the horizontal distance between the damage element and the tank when the damage element hits the tank under ideal conditions. X 2 represents the range deviation caused by missile attitude control error. X 3 represents the distance deviation caused by fuze detection error. X 4 represents the distance deviation caused by detonation control error. t This refers to the warhead detonation time; Step 6: Delay the fuse t The main warhead detonates after a predetermined time, followed by the secondary warhead, achieving highly efficient damage to the tank.

2. The method as described in claim 1, characterized in that, In the third step, the altitude for level flight is set to... H , H >20m.

3. The method according to any one of claims 1-2, characterized in that, The scheduled time is 6μs.

4. The method as described in claim 3, characterized in that, In the sixth step, the warhead is a tandem double explosively formed warhead consisting of a main EFP warhead and a secondary EFP warhead. The two warheads are detonated alternately to avoid the influence of the main EFP warhead detonation on the projectile attitude, thereby ensuring the hit accuracy of the damage element after the secondary EFP warhead detonates.

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