星际荣耀今日表示，其自主研制的JD-2发动机累计完成6次起动点火试车，包括2次单次起动点火试车，1次二次起动试车和1次二次起动+变推力试车，完成年度研试任务。介绍，用于本轮试车的发动机为第二台JD-2发动机，相比首台发动机，本台发动机在起动关机泵后水击、电控阀门执行机构的防水防潮、点火及起旋气体的多次点火/起旋用量等方面进行了改进和优化。
IT之家查询发现，JD-2发动机是星际荣耀为SQX-3中大型液体火箭配套研制的一款低成本、高性能、大推质比、智能化、深度变推液氧甲烷发动机。官方表示，本轮试验的完成进一步验证了发动机方案的合理性，设计、生产及总装的正确性，奠定了JD-2发动机后续批产化基础。后续JD-2发动机还将开展更加全面、完整、苛刻的考核试验及可靠性试验，并持续优化改进，为SQX-3火箭的早日首飞提供可靠、安全、低廉的动力系统！
新闻翻译：
News Title: Starry Honor Completes 6 Successful Ignition Start-up Tests of JD-2 Engine, Validates Engine Scheme
Keywords: Starry Honor, JD-2 engine, ignition start-up tests, validates engine scheme
News Content:
Starry Honor today announced that its independently developed JD-2 engine has successfully completed six ignition start-up tests, including two single-time ignition start-up tests, one secondary start-up test, and one secondary start-up + vector thrust test, as part of this year’s research and development tasks. The engine used for this test is the second unit of the JD-2 engine, which, compared to the first unit, has made improvements and optimizations in aspects such as water resistance, leakage protection, and ignition / rotation gas multiple ignition / rotation.
IT之家查詢發現，JD-2發動機是星際荣耀為SQX-3中大型液體火箭配套研制的一
【来源】https://www.ithome.com/0/741/971.htm
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