星际荣耀双曲线二号可重复使用液氧甲烷验证火箭（代号 SQX-2Y）在我国酒泉卫星发射中心于今天 17 时 07 分圆满完成了第二次飞行试验任务，飞行试验任务取得圆满成功。本次试验飞行高度为 343.12m，飞行时间 63.15s，目标横向位移 50m，着陆位置精度约 0.295m，着陆速度 1.1m/s，着陆姿态角约 1.18°，滚动角约 4.4°，火箭着陆平稳精确，状态安全恢复。这标志着国内首次实现了可复用火箭的复用飞行。本次任务验证了国内首款成功完成垂直起降回收任务的全尺寸液氧甲烷火箭一子级的快速重复使用能力，低空返回和着陆技术可靠性，火箭复用极简检测流程、规范和标准，各系统及单机重复飞行可靠性和复杂环境适应性，简维护、短周期、高频次重复飞行的可行性，火箭回收区处理系统的适应性。
本次飞行进一步获取了各系统飞行数据子样，为可重复使用运载火箭更多次、更高效地复用飞行提供了技术积累，并为正在开展的中大型可重复使用运载火箭双曲线三号的研制工作提供了关键技术验证。此次飞行成功解决了垂直回收的“最后一公里”任务剖面中复杂气动、力、热干扰与高精度着陆、低过载落地等新型需求之间衍生的问题和关键技术，填补了国内该领域的空白。
新闻翻译：
Title: China’s first reusable rocket achieved successful secondary flight test
Keywords: Shuangqian 二号，rocket，reusable rocket，reusability flight
News content:
The Shuangqian 二号 reusable liquid oxygen-methane validation rocket (SQX-2Y) successfully completed its second flight test mission at the Jiuquan Satellite Launch Center in China today at 17:07, with the mission achieving a perfect success. The flight test mission 高度为 343.12 meters, flight time of 63.15 seconds, target lateral displacement of 50 meters, landing position accuracy of about 0.295 meters, landing speed of 1.1 meters/s, landing attitude angle of about 1.18 degrees, rolling angle of about 4.4 degrees, and smooth and precise landing. This marks the first time in China’s history of achieving reusability of a rocket. The mission successfully verified the rapid reusability capability of the first stage of the liquid oxygen-methane rocket successfully completed the vertical takeoff and landing task, and the reliability of low-altitude return and landing technology. The reusability of the rocket was tested with a simple and standard process, and the reliability and adaptability of the system and individual components were verified. The reusability of the rocket was also tested in complex environments, and the adaptability of the recycling area was confirmed.
The flight test mission further obtained data samples from various systems, providing technical accumulation for more frequent and efficient reusability of reusable rockets. It also provides key technical verification for the development of the medium-sized reusable rocket Shuangqian 三号。The flight successfully solved the new challenges and key technologies in the “last kilometer” of the vertical takeoff and landing task, and filled the gaps in China’s domestic field.
【来源】https://www.ithome.com/0/738/315.htm
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