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本文报道了为测量火箭级间分离距离而研制的β射线测距传感器。结构是将β放射源和探测器面对面地分别安装在两级火箭上,把分离过程中探测到的粒子数转换成直流电压,送给遥测系统或磁记录器,便测出瞬时分离距离。当分离速度不超过2.5米/秒、所测分离距离在0～2米范围内,精确度可达10%;若超出此范围,测量精确度将会变差。地面实验和环境模拟试验表明该仪器适用于50公里以上的空间冷分离。
This paper reports a beta ray ranging sensor developed to measure the separation distance between rocket stages. The structure is that the beta radiation source and the detector are respectively mounted on two stages of rocket face to face, and the detected particles in the separation process are converted into DC voltage and sent to a telemetering system or a magnetic recorder to measure the instantaneous separation distance. When the separation speed does not exceed 2.5 m / s, the measured separation distance is within the range of 0 to 2 meters, with an accuracy of up to 10%. If it exceeds this range, the measurement accuracy will be poor. Ground experiments and environmental simulation tests show that the instrument is suitable for cold separation of more than 50 km.