麦克唐纳·道格拉斯公司的德尔他运载火箭现在已有了第一批商业订货单。这些订单中,有传统的德尔他运载火箭,也有1986年底决定生产的德尔他-2型火箭。根据该公司7月15曰、30日和8月11日宣布的情况看,固定订货或者选择订货的德尔他-2型火箭有21枚,其中20枚是由美国空军订购,用以发射其实用型导航卫星—Navstar;1枚为休斯公司订购,用以发射英国广播卫星公司的UK-DBS-2卫星,这是一颗 The McDonnell Douglas Delta launch vehicle now has the first commercial orders. Among these orders are the traditional delta launchers and the Delta-2 rockets that were decided at the end of 1986. According to the company’s announcement on July 15th, 30th and August 11th, there are 21 delta-2 rockets with fixed or selective orders, 20 of which were ordered by the U.S. Air Force to launch its utility. Navigation satellites - Navstar; one ordered for Hughes to launch British Broadcast Satellite’s UK-DBS-2 satellite