云爆子引信与云团高速交会的云雾浓度探测试验方法

The large-area detonation of the second-detonation fuel-air-explosive (FAE) warhead is related to the initiation control under the condition of optimal fuel cloud concentration when FAE cloud intersects with fuze at high speed. Based on the attenuation characteristics of the reflection coefficient of pulsed ultrasound in the cloud, a prototype of a FAE sub-fuze was developed, and a rocket sled test platform was built for detecting the intersection concentration of FAE cloud with the sub-fuze with rocket sled speeds of 75 m/s and 100 m/s. The curve of the sub-fuze dynamic recognition cloud concentration under high-speed environment and the gradient characteristics of pulse ultrasonic attenuation at different concentrations were obtained through test. The test results show that the proposed method can be used to obtain the high-speed intersection concentration identification of FAE cloud at the different speeds. The calculated error is not more than 15% at the nominal concentrations of 75 g/m³, 150 g/m³ and 225 g/m³.