Blasting Height Control Method of Millimeter Wave Proximity Fuze for Tank Gun Based on Data Setting

doi:10.12382/bgxb.2023.0028

Abstract

Abstract:

In order to meet the requirements of striking the personnel, armor, covered and other targets, the millimeter wave proximity fuze for tank gun needs to have a variety of blasting heights to maximize the projectile damage efficiency. It is difficult to meet the multiple blasting heights of proximity fuze due to the low ballistic extension of tank gun and the narrow beam of millimeter wave detector. A blasting height control model of millimeter wave proximity fuze for tank gun based on setting delay is established, and the strategy for increasing the ignition delay is analyzed to achieve the blasting height control. The ignition delay is calculated according to the initial firing angle and other attack conditions before launching, and the information crosslink between the weapon platform and the projectile is used to set the firing delay to the proximity fuze, so as to realize the blasting height control of projectile. A mathematical model is established, and the relationships among ignition delay, projectile initial velocity, firing angle, beam width of millimeter wave detector, detection distance and blasting height difference are analyzed by simulation. The calculation formula of ignition delay is summarized. The validity of the proposed method is verified by static test in laboratory and dynamic test in field.

Key words: proximity fuze for tank gun, data setting, millimeter wave detector, blasting height control

CLC Number:

TJ43⁺4.3

CHEN Zhipeng, LI Haojie, YAN Bingqian, ZHANG Chuanhao, QIAO Shixiang, ZHANG He. Blasting Height Control Method of Millimeter Wave Proximity Fuze for Tank Gun Based on Data Setting[J]. Acta Armamentarii, 2024, 45(6): 2034-2043.

Figures/Tables 19

Fig.1 Schematic diagram of millimeter wave proximity fuze with multiple blasting heights

Fig.2 Ballistic rectangular coordinate system

Fig.3 Optimal blasting height of projectile

Fig.4 Detection state of millimeter wave detector

Fig.5 Relationships among initiation delay, initial velocity and firing angle

Fig.6 Curve fitting diagram of initiation delay, initial velocity and firing angle

Fig.7 Curve of projectile falling velocity and muzzle velocity

Table 1 Projectile firing angle and vertical falling velocity

射角/(°)	落速/(m·s^-1)	发火延时增长率/%
10	70.0
20	113.9	62.7
30	147.9	29.9
40	174.0	17.6
50	193.7	11.3
60	208.2	7.5

Table 2 Ballistic parameters

序号	初速/ (m·s^-1)	射角/ (°)	竖直落速/ (m·s^-1)	落角/ (°)
1	700	15	91.3	26.5
2	700	20	112.2	33.5
3	700	25	130.6	38.8
4	1200	15	115	32.7
5	1200	20	137	38.9
6	1200	25	156.5	43.2

Fig.8 Curves of ignition delay and detector beam width

Fig.9 Curves of initiation delay with blasting height and distance difference

Fig.10 Curve of the difference between the height of projectile and the height and distance of explosion

Fig.11 Working flowchart of proximity fuze

Fig.12 Composition diagram of proximity fuze circuit

Fig.13 Physical circuit diagram of proximity fuze control module

Fig.14 Static test equipment in laboratory

Fig.15 Static laboratory test results

Table 3 Firing parameters of projectile

序号	射角/ (°)	初速/ (m·s^-1)	炸高/ m	计算延时/ms	实际延时/ms	延时误差/%
1	15	1000	6.5	28.9	25.6	11.4
2	15	1200	7.2	22	18.4	16.4
3	20	1000	5.3	35.7	30.9	13.4
4	20	1200	6.8	23.1	20.7	10.4

Table 4 Predicted trajectory and actual trajectory errors

序号	θ/(°)		v_y/(m·s^-1)
序号	预测弹道	实际弹道	预测弹道	实际弹道
1	34.5	35.1	108.4	115.1
2	37.3	38.9	116.3	128.4
3	43.9	44.2	130.0	139.6
4	46.6	48.2	138.4	146.8

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