火炮膛内多测试装置同步测试方法

Simultaneous test method for multiple test equipment in bore of cannon

目前火炮膛内压力测试都是通过在膛内固定位置安放测试仪器来获得各定点压力数据,由于各测试装置的触发时间不一致,获得的各位置膛压数据相互之间没有统一的时间基准,因此该文开展火炮膛内压力场分布测试方法的研究。对传统的放入式电子测压仪的顶部端盖结构和触发方式进行改进,以火炮发射时产生的光信号为测试装置同步外触发信号,实现火炮膛内多测试装置同步测试。通过ANSYS仿真软件对测试仪端盖进行静态载荷分析和密闭空间内火药燃烧压力场的动态变化进行仿真,为研究火炮膛内压力分布规律及进行多点同步实测试验提供技术支持。

At present, the chamber pressure test aims to obtain the fixed point pressure data by placing test equipment at the fixed position in the chamber. Because the triggering time of each test equipment is inconsistent, the obtained chamber pressure data at all positions have no unified time benchmark, so it is necessary to investigate the test method for pressure field distribution in chamber. Therefore, in this paper, improves the structure and triggering method of the top end cover of the traditional put-in electronic dynamometer is improved and the external trigger signal is synchronized by taking the optical signal generated by the gun firing as test equipment to realize the simultaneous testing of the multiple test equipment in the chamber. The static load analysis for the tester end cover is carried out and the dynamic change of the combustion pressure field of gunpowder in the confined space is simulated via ANSYS simulation software, which also provides technical support for pressure distribution law in chamber and multi-point synchronous measurements and test.