Abstract: Two types of solid propellants including double-base and nitramine propellants were used to determine the ignition delays under the conditions of plasma ignition constrast to conventional ignition. The experimental facility consisted of a plasma source that injected plasmas to the surface of the solid propellants. The surface temperature of the solid propellants was measured with thermocouples. The results show that the length of ignition delay for solid propellants is apparently short with hot and high-speed plasmas. There is a different ignition delay for two types of solid propellants with the similar plasma energy input, and a different ignition delay for the same solid propellant with the different plasma input.

Key words: Solid propellant;Plasma;Ignition;Ignition delay

摘要： 为了研究等离子体对固体推进剂点火性能的影响,分别对双基药和硝胺药等两种固体推进剂,进行了等离子体点火实验。实验装置包括等离子体源、热电偶丝和动态信号分析仪。通过实验,获得了两种固体推进剂在不同的等离子体能量输入的条件下,其表面温度随时间变化的曲线。与常规点火数据相比,固体推进剂的等离子体点火延迟时间明显缩短。不同类型的固体推进剂,在相同的等离子体能量输入条件下,其点火性能不同;同一种类型的固体推进剂,在不同的等离子体能量输入条件下,其点火性能也不一样。

关键词: 固体推进剂;等离子体;点火;实验;点火延迟