温压炸药弹内爆轰特性试验研究

Detonation characteristic of thermo-baric explosive in warhead

研究温压炸药爆炸初期弹内爆炸波作用过程,可以进一步分析温压炸药分散爆轰的作用机理,为温压炸药武器设计和系统优化提供可靠依据。设计了用测时法研究温压炸药爆轰波传播速度的试验装置,并用探针对相同组分和密度条件下、温压战斗部弹内爆炸初期的爆炸作用过程进行了对比试验,记录了触发时间信号,计算并分析了温压炸药弹内爆炸波的传播特性,得到了波阵面与弹径方向夹角α的变化规律。试验结果表明,温压炸药的爆轰波传播速度为4.632km/s,其弹内爆轰波的传播特性与中心高能分散药的爆轰波有密切联系,通过合理设计弹体结构和比药量,可以实现温压炸药的分散爆轰,提高温压炸药的爆炸威力。

The present article aims to introduce the authors＇ design of the experimental device for investigating the initial process of the detonation of thermo-baric explosives in warhead. As is known, a lo of attention has recently been paid to improving the performance of the thermo-baric explosive both at home and abroad, for they enjoy the advantages of high energy density, dispersing detonation, and so on, which the traditional explosive are short of. Being different from the condensed explosives, such explosive needs oxygen in the air for its reaction to occur. Therefore, its constituents and density depend not only upon its fuel itself, but also on its dispersion as well as the surrounding air condition. For the above reasons, the paper has quantitatively examined the conditions of all the detonation and the advantages to enhance the explosion effect so as to analyze the corresponding parameters governing the initial process in the bomb. The paper has also conducted comparative tests for the initial explosion velocity of single thermo-baric explosive of the same composition and density and analyzed the detonation features of such explosives in the warhead. In addition, it has also recorded the trigger signals with a digital oscillator with its explosion curves depicted. The results show that the detonation velocity of itself is 4.63 kro/s. This characteristic of thermo-baric explosive is strongly related to the central distributing high explosive and the detonation velocity of the former is lower than that of the later. The approach to distributing detonation can thus be likely to be made through optimizing the device.