CZ-3运载火箭

CZ-3 Launch Vehicle

本文简要地介绍了CZ—3运载火箭(CZ—3)的研制情况、结构及性能。CZ—3是我国第一次采用液氢和液氧作推进剂的火箭,由于液氢的温度极低而且易爆,所以火箭上采用了绝热结构,对低温密封和防爆也采取了相应的措施。CZ—3第三级是两次启动的火箭,除了其发动机本身要适应两次启动的要求之外,为了保证火箭在滑行段的姿态稳定和火箭的正常启动,箭上增加了滑行段的姿态控制和推进剂管理系统。

In this article, the development, structure and performance of CZ-3 are briefly introduced.CZ-3 is the first launch vehicle of China which employs liquid hydrogen and liquid oxygen propellant. Because of the cryogenic temperature and easy explosion of liquid hydrogen, adiabatic structure is applied on the vehicle; and for cryogenic sealing and explosion-proof, some associated measures are adopted.The third stage of CZ-3 can be restarted oncemore. The engine should meet the requirements of twice ignition, and an attitude control system and propellant management system on board are added on, to assure attitude stabilization of launch vehicle in the coast period and make launch vehicle refilled normally.