Abstract: Due to the lack of available experimental method the trajectory model of SRM is not yet perfect and the injection boundary condition of particles in SRM chamber is assumed arbitrarily.Considering this situation a method based on RTR technique to determine the injection boundary condition of particles is developed.The first step is the experimental study of particles trajectory in SRM chamber during static firing test.By using image process technique the trajectory of particles can be obtained.The second step is the calculation of trajectory of particles in chamber under experimental condition by trajectory model.By reverse deduction method the injection boundary condition of particles can be obtained. +

Key words: Solid propellant rocket engine;Combustion chamber;Partifcle;Trajectory;RTR technique

摘要： 由于缺乏有效的实验手段， 目前的ＳＲＭ 颗粒轨道模型很不完善， 其中粒子的加入边界条件完全是建立在人为假设的基础上。针对这种情况， 发展了一种以实验为基础的确定凝相粒子加入边界条件的方法， 首先利用ＲＴＲ技术对实验发动机热试车条件下凝相粒子的运动进行实验研究， 通过图象处理技术获得粒子的运动轨迹， 然后采用轨道模型法计算实验条件下凝相粒子的运动轨迹， 通过轨迹反推法给出了粒子加入边界条件。

关键词: 固体推进剂火箭发动机;燃烧室;颗粒;轨迹;RTR技术