摘要
短的点火延迟或对某些微型固体火箭发动机尤为重要。文中引用固相点火理论，在诸多向推进剂表面供热的方式中，着重分析了起重要作用的对流换热。认为提高点火燃气的流速能明显地提高点火燃气对推进剂表面的热交换率，使推进剂表面很快达到发火温度。在微型固体火箭发动机的短点火延迟时间点火器设计中应用了这一理论，并获得了理想的效果。
he shortened ignitoin delay time is extremely important for some microsolid propellant rocket motors. In this paper, solid-state ignition theory and ignition course of hot gases are used. The study verifies that high flow rate of ignition gases rises heat exchange of gases to the propellants grain surface and the ignition temperature is reached rapidly. The theory is applied to igniter designs to shorten ignition delay time,and to obtain perfect igniter for micro-solid propellants rocket motors.
出处
《推进技术》
EI
CAS
CSCD
北大核心
1995年第3期42-45,共4页
Journal of Propulsion Technology
关键词
火箭发动机
点火延迟
点火器
传热
Microrocket engine, Ignition delay, Igniter, Heat transfer
