火箭橇试验加载技术研究

研究火箭橇加载技术对火箭橇试验的开展具有重要意义。采用四阶龙格-库塔法,根据固体火箭发动机的近似推力曲线和平均推力曲线以及空气动力学理论对固体火箭发动机驱动的火箭橇的整个运行过程进行了估算,获得了火箭橇在超音速运行过程的速度历程和位移变化情况,给出了橇车在轨道上运行的最大速度和出轨速度。估算结果与试验测试结果符合较好,说明以近似推力曲线计算的结果能比较准确地反映火箭橇的运行过程。

The Study on Load Technique for Rocket Sled Experiment

The rocket sled loading technique is very important for rocket sled experiment.The rocket sled running process was estimated by fourth-order Runge-Kutta based on rocket's fitting force curve and average force curve applying with the aerodynamics theory.The velocity history and displacement in the supersonic running process were calculated,and the maximum velocity and the derailment velocity were achieved.The estimated results are well in accordant with the experimental results,which indicates that the calcu...