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美航宇局已决定暂时选用一次性运载火箭发射它的五个有效载荷。航宇局于5月宣布了它的两阶段的运载火箭订购计划,并粗略地确定了一个发射时间表。正在考虑的第一阶段发射计划为:“ROSAT”,1990财年发射;“CRRES”,1990财年;“EUVET”,1991财年;“TDRS”,1991财年,还有一个行星际的备份卫星也将于1991财年发射。航宇局负责人说,最后的批准及发射日程将取决于可能获得的资金及有效载荷的准备情况。众院空间小组委员会和参院商业、科学和运输委员会同意给航宇局核准的1988财年订购一次性运载火箭的计划提供不需承办申请的资金。航宇局一
The United States Aerospace Agency has decided to temporarily deploy a single-use rocket to launch its five payloads. NASA announced its two-phase launch order plan in May and roughly set a launch schedule. The first phase of the launch plans under consideration are: ROSAT, launched in FY 1990; CRRES, FY1990; EUVET, FY1991; TDRS; there was an interplanetary backup in fiscal year 1991 The satellite will also be launched in fiscal year 1991. The head of the space agency said the final approval and launch schedule will depend on the availability of funds and payload preparation. The House Space Subcommittee and the Senate Commerce, Science and Transportation Commission agreed to provide NASA-approved plans for ordering one-time launch vehicles in FY19 to provide non-contracted funds. NASA one