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1994年2月8日下午4时33分,在西昌卫星发射基地,随同我国最新研制的新型运载火箭CZ-3A发射成功,把我国又一颗新型卫星——实践四号送入地球同步转移轨道,使我国卫星家族中又增添了一个新成员。星上所有系统工作正常,通过遥测系统,大量数据正在源源不断地向地面发送。实践四号卫星是国防科工委根据我国新型运载火箭CZ-3A首次飞行试验的需要与可能于1991年年底将研制任务下达给航天工业总公司中国空间技术研究院的,具体研制由中国空间技术研究院空间飞行器总体设计部负责。卫星的有效载荷分系统(6台空间探测仪器)由中国科学院空间应用与研究中心研制,供配电系统中的一次能源及其控制器部份由电子部天津18所研制,其余系统都由空间飞行器总体设计部负责抓总和研制。从整星总体方案设计到总装、电测、大型地面试验、靶场测试、卫星在轨管理等都由空间飞行器总体设计部完成。实践四号卫星是一颗空间环境探测及效应研究和新技术试验型卫星,也是我国进行此类
On February 8, 1994, at 4:33 p.m., Xichang Satellite Launch Base was successfully launched with the launching of the new launch vehicle CZ-3A newly developed in our country. Another new satellite, China’s No.4 Practice, was sent to the geosynchronous transfer orbit , So that China’s satellite family has added a new member. All systems on the planet are working properly, and large amounts of data are being sent to the surface through telemetry. Practice No. 4 satellite is the National Defense Science and Industry Commission in accordance with China’s new launch vehicle CZ-3A first flight test needs and may be the end of 1991 the development mission to the China Aerospace Industry Corporation, China Academy of Space Technology, the specific development of China’s space technology Institute of spacecraft overall design department is responsible for. The satellite’s payload subsystem (six space exploration instruments) was developed by the Center for Space Applications and Research of the Chinese Academy of Sciences. The primary energy supply and its controller in the power distribution system were developed by the Ministry of Electronics, Tianjin 18, and the rest of the systems were made up of space The overall design of the aircraft is responsible for the total research and development. From the overall program design to the overall assembly, electrical test, large-scale ground test, range test, satellite orbital management by spacecraft overall design department completed. Practice No. 4 satellite is a space environment exploration and effects of new technologies and experimental satellite, but also for our country to carry out such