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美航宇局和国防部7月23日透露:从1992年开始,美国航天飞机每年将进行30次飞行。其中为国防部飞行14次,为航宇局飞行12次,为国外用户和商业用户飞行4次。但这种预计很不准确,因为军用飞行每年需要14次,占每年预计飞行的47%。而国防部表示它只占用了每年24次航天飞机飞行的三分之一(8次)。实际上国防部是想在使用航天飞机的同时,续继使用传统的大型运载火箭大力神-34D7及其改进型。
NASA and Department of Defense revealed on July 23 that since 1992, the U.S. space shuttle will fly 30 times a year. Of these, 14 flights were conducted by the Ministry of Defense, 12 for the Aerospace Department and 4 for foreign users and commercial users. However, this estimate is inaccurate because military flights take 14 times a year, accounting for 47% of the estimated annual flight. The Department of Defense said it occupies only one-third (8) flights per space shuttle 24 times a year. In fact, the Defense Department wants to use the space shuttle at the same time, continue to use the traditional large launch vehicle Hercules-34D7 and its improvements.