In 1969, AC Igniter plugs fire the second and third stage rocket engines that put the first me on the moon.
1969年，人类首次登月，AC火花塞引燃了第二和第三节火箭的引擎。
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In order to improve working reliability, increase grain mass, and achieve ignition and stage separation at the same time, a successful method is to apply an external igniter to solid rocket motor.
According to analyze the structure of survival rocket and identify its vulnerable spots, necessary structural improvements are put on overall lock and the hermeticity of igniter tube.