联合技术系统公司对美国导弹防御火箭发动机进行试验据联合技术系统公司９月２９日报道，该公司对陆基拦截机可移动喷管固体火箭发动机成功地进行了点火试验，这是美国陆军国家导弹防御技术准备计划的关键部件。发动机和多枢轴柔性密封，即喷管控制中的一种新概念，由联合... United Technologies Systems tests missile defense rocket engine in the United States According to a joint technology system company reported on September 29, the company successfully conducted a fire test on ground-based interceptor portable nozzle solid rocket engine, which is the United States Army National Missile The key component of a defensive technology readiness plan. Engine and multi-pivot flexible seal, a new concept in the control of the nozzle by the joint ...