Target function height testing method

Abstract

The invention discloses a target action height testing method, which comprises the following steps that: a storage module is additionally arranged in a fuse of a projectile body, and after the projectile body is launched, the storage module acquires a fuse power-up signal, an overload signal when the projectile body is launched, a projectile body grounding overload signal and a detonation control signal output by a fuse explosion height control module; meanwhile, a trajectory tracking radar obtains trajectory data and speed data in the whole flight process of the projectile body; and finally, after data accuracy verification is carried out, the fuze burst height is calculated through the time difference between the moment of the detonation control signal and the projectile body landing moment and the speed, measured by the trajectory tracking radar, in the vertical direction of the projectile body landing moment. According to the method, real burst height data of the fuze can be obtained, and the error problem existing in an existing method is effectively solved; the testing method can be applied to detection fuse burst height testing, and important data support is provided for development of new fuses.

Description

Technical Field

[0001] The invention relates to the field of fuze testing, and in particular to a target action height testing method. Background Art

[0002] The fuze is an important component of the weapon system and is mainly used in anti-land, anti-air, air-to-air and other weapon systems. The weapon system acts on the target mainly through the warhead to strike and damage the target. The damage effect of the warhead on the target depends on the time when the fuze acts.

[0003] At present, the conventional method for testing the explosion height of radio fuzes is to add a certain amount of propellant and red lead powder and other materials to the projectile body. After the fuze is activated, the propellant is detonated, and the projectile is photographed by high-speed video when it explodes. Afterwards, the explosion height of the fuze is calculated by interpreting the high-speed video. However, since there is a certain dispersion of the landing points of the projectile body, if the dispersion is too large, the high-speed video may not be able to capture the explosion of the projectile body. If the landing point of the projectile body is not at the center of the high-speed video, the error of the calculated explosion height is large. Another method is to calculate the explosion height by sliding the projectile. A towing rope is pulled on a high tower, and the fuze equipped with an indicator light is slid down from a high place along the towing rope. Before the fuze falls to the ground, a camera is used to capture the moment when the indicator light on the fuze is lit to calculate the explosion height. This method cannot truly and effectively simulate the speed and landing angle of the fuze when it is activated, so it cannot truly reflect whether the fuze can work normally at high speed. Summary of the invention

[0004] The purpose of the present invention is to provide a target action height testing method to solve the problem of large testing error in existing testing methods.

[0005] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0006] A method for testing target action height is disclosed. A storage module is added inside the fuze of a projectile. After the projectile is launched, the storage module collects a fuze power-on signal, an overload signal when the projectile is launched, an overload signal when the projectile touches the ground, and a detonation control signal output by a fuze explosion height control module. Meanwhile, a trajectory tracking radar obtains trajectory data and speed data of the projectile throughout its flight. Finally, after data accuracy verification, the fuze explosion height is calculated based on the time difference between the detonation control signal and the projectile landing moment and the vertical speed of the projectile at the landing moment measured by the trajectory tracking radar.

[0007] Furthermore, before the test, a storage module is installed in the fuze of the projectile, and the storage module has a first analog interface, a second analog interface and a digital interface; the first analog interface is connected to the fuze power-on monitoring signal line, and the second analog interface is connected to the overload collection signal line; the signal output line of the fuze explosion height control module of the projectile itself is connected to the digital interface.

[0008] Furthermore, the fuze power-on monitoring signal line is used to collect the fuze power-on signal and store it through the storage module to verify whether the fuze is working normally; the overload collection signal line is used to collect the overload signal when the projectile is fired from the muzzle and the overload signal of the projectile touching the ground and store it through the storage module; the fuze explosion height control module outputs the detonation control signal of the projectile and sends it to the storage module through the digital interface to verify whether the detonation is normal and provide data support for the explosion height calculation.

[0009] Furthermore, the ballistic tracking radar is arranged at the side and rear of the artillery, and the artillery firing test of the projectile is started: the storage module is powered on and data collection begins; during the process from the launch of the projectile to its landing, the ballistic tracking radar is used to track the projectile throughout the entire process to obtain the projectile's ballistic data and speed data; the test ends after the projectile lands, the projectile is recovered, the data in the storage module is read, and the fuze explosion height is calculated in combination with the speed data obtained by the radar.

[0010] Furthermore, the time corresponding to the overload signal when the projectile is fired from the muzzle is T4, the time corresponding to the fuze power-on signal is T1, the time corresponding to the detonation control signal output by the fuze explosion height control module is T2, and the time corresponding to the overload signal of the projectile touching the ground is T5; in the radar test data, the time of projectile launch based on the acquired ballistic data is recorded as T0, and the time of projectile landing is recorded as T3;

[0011] The accuracy of the data is determined based on the following conditions:

[0012] Condition 1: |T4-T5|≥|T0-T3|;

[0013] Condition 2: |T4-T5|≥|T1-T2|&|T0-T3|≥|T1-T2|;

[0014] Condition 3: |T4-T5|≥|T2-T3|&|T0-T3|≥|T2-T3|;

[0015] Condition 4: |T4-T5|≥|T1-T3|&|T0-T3|≥|T1-T3|;

[0016] Condition 5: |T1-T3|≥|T2-T3|;

[0017] If the above conditions 1 to 5 are met at the same time, the next step of blasting height calculation is carried out; otherwise, the obtained data is considered inaccurate and needs to be retested and collected.

[0018] Furthermore, the time corresponding to the detonation control signal output by the fuze explosion height control module is T2, the landing time of the projectile determined by the trajectory tracking radar is T3, and the vertical speed of the projectile at the landing time is recorded as V y , then the calculation formula for the fuze explosion height is:

[0019] H=V y ×|T2-T3|

[0020] Wherein, H represents the explosion height of the fuse, in meters, H≥0.

[0021] A target action height test system comprises a storage module and a trajectory tracking radar in the target action height test method; the storage module and the radar complete the calculation of the fuze explosion height according to the method.

[0022] Compared with the prior art, the present invention has the following technical features:

[0023] The present invention collects the fuze power supply signal, the detonation signal output by the fuze explosion height control module and the fuze ground contact signal through the storage module installed in the fuze body, and calculates the explosion height in combination with the vertical speed data of the projectile body when it hits the ground collected by the ballistic radar, so as to obtain the real explosion height data of the fuze, and effectively overcome the error problem existing in the existing method; the test method can be applied to the explosion height test of detection type fuzes, and provide important data support for the development of new fuzes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the timing diagram for storage acquisition and radar testing. DETAILED DESCRIPTION

[0025] In view of the difficulty of fuze explosion height test, the present invention proposes a target action height test method, which comprises the following steps: installing a storage module inside the fuze of a projectile, and after the projectile is launched, the storage module collects the fuze power-on signal, the overload signal when the projectile is launched, the overload signal when the projectile touches the ground, and the detonation control signal output by the fuze explosion height control module, and at the same time, a ballistic tracking radar obtains the trajectory data and speed data of the projectile throughout the flight; finally, after the data accuracy is verified, the fuze explosion height is calculated according to the time difference between the detonation control signal and the projectile landing moment and the vertical speed of the projectile at the landing moment measured by the radar.

[0026] See attached Figure 1 The present invention provides a method for testing target action height, comprising the following steps:

[0027] Step 1: before the test, a storage module is installed in the fuze of the projectile, and the storage module has a first analog quantity interface, a second analog quantity interface and a digital quantity interface; the first analog quantity interface is connected to the fuze power-on monitoring signal line, and the second analog quantity interface is connected to the overload acquisition signal line; the signal output line of the fuze explosion height control module of the projectile itself is connected to the digital quantity interface;

[0028] The storage module is designed with one digital interface and two analog interfaces, among which: the fuze power-on monitoring signal line is used to collect the fuze power-on signal and store it through the storage module, which is mainly used to verify whether the fuze is working normally; the overload collection signal line is used to collect the overload signal of the projectile when it is fired from the muzzle and the overload signal of the projectile touching the ground and store it through the storage module; the fuze explosion height control module outputs the detonation control signal of the projectile and sends it to the storage module through the digital interface. On the one hand, it can verify whether the detonation is normal, and on the other hand, it can provide data support for the explosion height calculation.

[0029] Step 2: Place the trajectory tracking radar at the side and rear of the artillery, and start the artillery firing test of the projectile; power on the storage module and start data collection; use the trajectory tracking radar to track the projectile from the time the projectile is fired to the time it lands, and obtain the projectile's trajectory data and velocity data; after the projectile lands, the test ends, the projectile is recovered, the data in the storage module is read, and the fuze explosion height is calculated in combination with the velocity data obtained by the radar:

[0030] Storage module and ballistic radar test data timing diagram see Figure 1 The time T4 corresponding to the overload signal when the projectile is fired from the muzzle represents the projectile launch moment, the time corresponding to the fuze power-on signal is T1, the time corresponding to the detonation control signal output by the fuze explosion height control module is T2, and the time corresponding to the projectile's ground-touching overload signal is T5; in the radar test data, the projectile launch moment obtained based on the acquired ballistic data is recorded as T0, and the projectile landing moment is recorded as T3.

[0031] The accuracy of the data is determined based on the following conditions:

[0032] Condition 1: |T4-T5|≥|T0-T3|;

[0033] Condition 2: |T4-T5|≥|T1-T2|&|T0-T3|≥|T1-T2|;

[0034] Condition 3: |T4-T5|≥|T2-T3|&|T0-T3|≥|T2-T3|;

[0035] Condition 4: |T4-T5|≥|T1-T3|&|T0-T3|≥|T1-T3|;

[0036] Condition 5: |T1-T3|≥|T2-T3|;

[0037] If the above conditions 1 to 5 are met at the same time, the next step of blasting height calculation is carried out; otherwise, the obtained data is considered inaccurate and needs to be retested and collected.

[0038] The blast height is calculated as follows:

[0039] The time corresponding to the detonation control signal output by the fuze height control module is T2, the landing time of the projectile determined by the trajectory tracking radar is T3, and the vertical speed of the projectile at the landing time is recorded as V y , then the calculation formula for the fuze explosion height is:

[0040] H=V y ×|T2-T3|

[0041] Where H represents the fuze explosion height in meters, H≥0, V y The unit is meter / second.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A target action height testing method, characterized in that: A storage module is installed inside the fuze of the projectile. After the projectile is launched, the storage module collects the fuze power-on signal, the overload signal when the projectile is launched, the overload signal of the projectile touching the ground, and the detonation control signal output by the fuze explosion height control module. At the same time, the ballistic tracking radar obtains the ballistic data and speed data of the projectile throughout the flight. After the data accuracy is finally verified, the fuze explosion height is calculated based on the time difference between the detonation control signal and the projectile landing moment and the vertical speed of the projectile at the moment of landing measured by the ballistic tracking radar.

2. The target action height testing method according to claim 1, characterized in that: Before the test, a storage module is installed in the fuze of the projectile. The storage module has a first analog interface, a second analog interface and a digital interface. The first analog interface is connected to the fuze power-on monitoring signal line, and the second analog interface is connected to the overload collection signal line. The signal output line of the fuze explosion height control module of the projectile itself is connected to the digital interface.

3. The target action height testing method according to claim 1, characterized in that: The fuze power-on monitoring signal line is used to collect the fuze power-on signal and store it through the storage module to verify whether the fuze is working normally; The overload acquisition signal line is used to collect the overload signal when the projectile is fired from the muzzle and the overload signal of the projectile touching the ground and store them through the storage module; the fuze explosion height control module outputs the detonation control signal of the projectile and sends it to the storage module through the digital interface to verify whether the detonation is normal and provide data support for the explosion height calculation.

4. The target action height testing method according to claim 1, characterized in that: The ballistic tracking radar is arranged at the side and rear of the artillery, and the artillery firing test of the projectile is started: the storage module is powered on and data collection begins; during the process from the launch of the projectile to its landing, the ballistic tracking radar is used to track the projectile throughout the entire process to obtain the projectile's ballistic data and speed data; the test ends after the projectile lands, the projectile is recovered, the data in the storage module is read, and the fuze explosion height is calculated in combination with the speed data obtained by the radar.

5. The target action height testing method according to claim 1, characterized in that: The time corresponding to the overload signal when the projectile is fired from the muzzle is T4, the time corresponding to the fuze power-on signal is T1, the time corresponding to the detonation control signal output by the fuze explosion height control module for the projectile is T2, and the time corresponding to the overload signal of the projectile touching the ground is T5; In the radar test data, the launch time of the projectile based on the acquired trajectory data is recorded as T0, and the landing time of the projectile is recorded as T3; The accuracy of the data is determined based on the following conditions: Condition 1: |T4-T5|≥|T0-T3|; Condition 2: |T4-T5|≥|T1-T2|&|T0-T3|≥|T1-T2|; Condition 3: |T4-T5|≥|T2-T3|&|T0-T3|≥|T2-T3|; Condition 4: |T4-T5|≥|T1-T3|&|T0-T3|≥|T1-T3|; Condition 5: |T1-T3|≥|T2-T3|; If the above conditions 1 to 5 are met at the same time, the next step of blasting height calculation is carried out; otherwise, the acquired data is considered inaccurate and needs to be retested and collected.

6. The target action height testing method according to claim 1, characterized in that: The time corresponding to the detonation control signal output by the fuze height control module is T2, the landing time of the projectile determined by the trajectory tracking radar is T3, and the vertical speed of the projectile at the landing time is recorded as V y , then the calculation formula for the fuze explosion height is: H=V y ×|T2–T3| Wherein, H represents the explosion height of the fuse, in meters, H≥0.

7. A target action height test system, characterized in that: The test system includes a storage module and a trajectory tracking radar in the target action height test method according to any one of claims 1 to 6; the storage module and the radar complete the fuze explosion height calculation according to the method.

Images