超高速撞击RDX光辐射特征测量试验

Measurements of optical radiation characteristics in tests of impacting RDX at hypervelocity

为探究黑索金(RDX)靶材超高速撞击辐射特征,在超高速碰撞靶上开展了铝球超高速撞击RDX光辐射特征测量试验。获得了2A12铝球以约3 km/s、6 km/s的速度撞击空药盒、盒装RDX、裸装RDX等靶材的紫外、可见光典型波段的光谱辐射强度。试验发现:超高速撞击不同靶材的辐射特性显著不同,撞击空药盒存在1个辐射峰、总辐射时间最短,撞击盒装RDX存在2个辐射峰、总辐射时间次之,撞击裸装RDX存在多个辐射峰、总辐射时间最长;撞击冲击波效应产生的强辐射波段与爆轰产生的强辐射波段显著不同;撞击冲击波效应产生的光谱辐射强度随撞击速度的增大而增强。不同靶材辐射特性的显著差异,可作为目标爆炸程度的判断依据;该试验结果可为理论研究和数值模拟提供参考。

In order to study the radiation characteristics of impacting RDX at hypervelocity,the tests of impacting RDX at hypervelocity have been carried out on the hypervelocity impact range of China Aerodynamics Research and Development Center.In the tests,aluminum ball was fired through two-stage light-gas guns,the trigger was controlled through the velocity measurement and control system,and the spectral radiation intensity was measured through ultraviolet and visible light radiometer.The spectral radiation intensity data of typical ultraviolet and visible light bands,which are generated when the 2A12 aluminum ball impinges on the target materials of empty box,packed RDX and naked RDX at the speed of about 3 km/s and 6 km/s,have been measured in the tests.The experimental results show that there are significantly different radiation characteristics after impacting the different target.There are 1 radiation peak when impacting the empty box,2 radiation peaks when impacting the packed RDX,multiple radiation peaks when impacting the naked RDX.The radiation time to impact the empty box is the shortest,the radiation time to impact the packed RDX is the second,and the radiation time to impact the naked RDX is the longest.The strong radiation bands of impact shock effect and detonation are significantly different.The radiation peak of impact shock effect increases with the increase of the impact velocity.The difference of radiation characteristics can be used as the basis to judge the type of target and whether it explodes.The experimental results can provide important reference for theoretical research and numerical simulation.