欧洲的阿里安5运载火箭的首次发射时间推迟,这是由于重型大推力运载火箭的第一枚固体火箭助推器的推进剂浇铸遇到了问题。这个问题是11月份在圭亚那航天中心当地一个新建厂浇铸阿里安5助推器的下面推进剂壳段时所遇到的。欧空局负责阿里安5计划的经理Jacques Durand说。向运载火箭壳段注入一批推进剂后,未能使其坚固。由于浇铸问题使整个壳段不能使用。因此,不得不重新制造一个壳段。为此,阿里安5助推器的全尺寸静态试车将从原计划1992年3月往后推迟大约6个月。根据法国国家航天研究中心(CNES)法国空间局阿里安 The first launch of the Ariane 5 launch vehicle in Europe was postponed due to problems with the propellant casting of the first solid rocket booster for heavy heavy-lift launch vehicles. The problem was encountered in November following the casting of the lower propellant shell segment of the Allian 5 booster at a new construction site in Guyana’s space center. Jacques Durand, ESA’s manager for the Arian 5 plan, said. Injecting a number of propellant into the rocket shell segment failed to make it strong. Due to casting problems the entire shell segment can not be used. Therefore, a shell segment has to be remanufactured. To this end, Ariane 5 booster full-size static test will be delayed from the original plan in March 1992 about 6 months. According to the French National Space Research Center (CNES) French Space Agency Arian