烟火剂式点火器内弹道性能理论分析

THEORETICAL ANALYSIS OF INTERNAL BALLISTICS FOR PYROGEN-TYPE IGNITERS

关键词:  火箭发动机点火器  固体推进剂点火  点火药  烟火剂  内弹道性能  性能预测

Key words:  Rocket ignitor  Solid propellent ignition  Interior ballistic performance  Ignition powder, Pyrotechnic compound  Performance prediction

摘要:

用固体火箭发动机中常用的瞬态平衡压强法对烟火剂式点火器内弹道性能进行了理论预示，并提出热损失系数的概念。此外，进行了试验验证。计算结果和试验结果吻合较好。

Abstract:

Instantaneous equilibrium pressure method is used in this paper to analysis the internal ballistics of pyrogen-type igniters. A concept of igniter heat loss coefficient is also presented. The relationship among igniter charge mass, nozzle area and igniter chamber pressure is also established. The calculation results are satisfactory with test date. Two important conclusions are drawn from the caculation results. One shows that the ignition acceleration basket is an important and reasonable part in igniter, another shows a kind of optimal igniter charge configuration.