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欧洲伏尔甘(Vulcain)大型低温发动机将于1988年开始作全尺寸发动机的部件试验,这种发动机将用作“阿里安”5的芯级,“阿里安”5计划在90年代后半期服役.
A large low-temperature Vulcain engine will be tested in Europe for parts testing of a full-size engine in 1988, which will be used as a core for the “Ariane 5” 5 and “Ariane 5” for service in the second half of the 1990s .