火箭弹道学发动机推力模拟方法

A Simulation Method for Engine Thrust in Rocket Ballistics

发动机工作性能对火箭飞行性能的严重影响已引起众多研究人员的重视,尤其是火箭发动机推力总冲及其工作时间等重要参数。这里提出了一种在静态测定推力时间历程、总冲的基础上,通过实际飞行测试结果确定其扰动量来最终模拟推力时间历程的仿真方法。该方法简洁方便,易于编制程序及模拟仿真,便于工程人员掌握,可用于火箭发射动力学、外弹道学及射表编制等方面研究,具有一定应用价值。

The severe influence of the rocket engine property, especially its total thrust impulse and work time on the rocket flight performance has aroused great attention among technological workers. In the investigation, a new method to simulate the engine thrust course is proposed. It is based on the static testing of engine thrust course, total thrust impulse and their disturbed quantities that can be determined by the actual flight test. The method is concise and convenient for program, simulation and computation. It can be applied in many study fields, such as rocket launch dynamics, external ballistics, firing table.