德尔塔 IV 重型火箭在卡纳维拉尔角最后一次发射美国机密卫星后退役。 Delta IV Heavy rocket retires after final launch of classified US satellite from Cape Canaveral.
德尔塔 IV 重型火箭在最后一次发射美国机密侦察卫星后退役,结束了这种主力运载火箭 60 年的运行。 Delta IV Heavy rockets retired with final launch of a classified US reconnaissance satellite, ending a 60-year run of the workhorse launch vehicle. 这枚由联合发射联盟 (ULA) 拥有的火箭高约 23 层楼,从佛罗里达州卡纳维拉尔角太空军基地发射升空,搭载着美国国家侦察局 (NRO) 的机密有效载荷。 The United Launch Alliance (ULA)-owned rocket, standing approximately 23 stories tall, blasted off from Cape Canaveral Space Force Station in Florida, carrying a classified payload for the National Reconnaissance Office (NRO). 这次发射是德尔塔 IV 重型火箭的最后一次飞行,该火箭已服役数十年,自 1960 年启动以来已执行了近 400 次任务。 This launch marks the final flight for the Delta IV Heavy, which has served for decades, tallying nearly 400 missions since its inception in 1960.