针对小口径高射频串联发射弹丸的内弹道力学特性测试问题，提出了基于弹载存储测试技术的弹底压力、弹前压力同步测试方法。设计了模拟弹和小型PVDF压电式力传感器，将力传感器作为底螺与头螺部件承受并测量弹底压力与弹前压力，在发射过载条件下进行了传感器力学分析并推导了受力与输出的关系方程；分析了传力块的质量、厚度，聚偏二氟乙烯（PVDF）薄膜的厚度、面积对传感器动态特性和温升的影响；进行了力传感器灵敏度理论建模与分析并开展了标定实验，结果表明PVDF薄膜预紧力越大，传感器灵敏度越小；开展了串联发射试验，测试结果和内弹道数值模拟计算结果吻合较好。

Aiming at measuring the projectile’s interior ballistic mechanical properties of small caliber series launch weapon, a simultaneous measurement method based on the storage testing technology was proposed for the bottom pressure and front pressure of the projectile. Simulated projectiles and small Polyvinylidene Difluoride（PVDF） piezoelectric force sensors were designed. Two force sensors were used as the simulated projectile’s bottom screw and head screw component to withstand and measure the projectile’s bottom pressure and front pressure. The system’s measurement equation under high-overload ballistic environment was derived according to the mechanical analysis of the force sensor. The influence of the mass and the thickness of the force transmission block, the thickness and the area of the PVDF film on the dynamic characteristics and temperature rise of the sensor were analyzed. The sensitivity of the force sensor was analyzed and the calibration experiment was carried out. The results shown that the greater the preload of the PVDF film, the lower the sensor’s sensitivity. The calibration results were consistent with the theoretical analysis. A series launch test was carried out based on two simulated projectiles, and the measured interior ballistic mechanical properties of the projectiles were in accordance with the numerical simulation results.