2 秒内将逃生塔送至安全地带。密封件可耐290℃温

湖北日报讯（记者周盛雷、通讯刘谦、西岭）10月31日23时44分，神舟二十一号载人飞船成功发射升空。中国航天科技集团公司第四研究院四十二所（简称航天四院四十二所）研发了逃逸火箭发动机推进剂配方、神舟载人飞船密封件等多项“襄阳制造”关键技术，保障了航天飞船的成功发射。逃生系统是航天器发射阶段宇航员安全的“最后一道防线”。它需要在2秒内将逃生塔高速传送到安全的地方，技术门槛非常高。尽管相关产品已达到“再次验证并批量生产”的成熟状态，但航空工程四十二所推进剂组逃生组rospace Science and Technology took the initiative to expand the scope of the test, set aside enough verification time with advanced risk awareness, and completed more than ten batches of raw material stability verification at the same time, and systematically checked for the potential to ensure that the potential repetition is the repetition of the potential -repetition of potential repetitions of repetition of potential repetitions of repetitions of potential repetitions of repetitions of potential repetitions of repetitions of potential repetitions formula.密封系统是航天器舱内与外太空之间的“屏障分隔”，直接关系到舱内环境的稳定性和飞行票。航天科技四院四十二所为神舟二十一号定制了数十种密封产品，从几毫米的仪器设备密封到直径两米多的舱门密封rs，构筑严密的密封防护网。自1998年中标神舟一号（试验船）密封项目以来，该所持续为“神舟”飞船提供返回舱和轨道舱密封。产品经过9万次土壤疲劳测试和避免-90℃至200℃高低温交替等恶劣环境测试。它们完美满足必要的在轨要求，可以全力为载人航天任务保驾护航。