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7月24日15时8分,我国在研长征五号运载火箭成功完成芯二级首次动力系统试车。此次试车是我国目前开展的最长时间的系统级火箭动力试车,也是长征五号运载火箭转入发射场合练阶段的重要前提。用于此次试验的长征五号运载火箭芯二级产品直径5m,总长约
At 15:08 on July 24, China successfully completed the test for the first time of its power system at the core of Long March 5 launch vehicle. The trial is the longest system-level rocket power trial run in our country and an important prerequisite for the launch of the Long March V launch vehicle into the launch site. Used for the test of the Long March V launch vehicle core product diameter 5m, total length of about