在“哥伦比亚号”完成第五次飞行任务之后,第二架航天飞机“挑战者号”将投入使用,第三架航天飞机“发现者号”将于1983年12月交付使用。航宇局决定在1983年安排五次飞行,其中“挑战者号”将进行四次飞行。具体的飞行任务安排如下: 第六次飞行:预定的发射日期为1月20日,“挑战者号”携带的有效载荷为跟踪和数据中继卫星(TDRS),随机乘员4名,飞行时间为 The second space shuttle Challenger will be operational after Columbia completes its fifth mission, and the third space shuttle Discovery will be delivered in December 1983. NASA decided to arrange five flights in 1983, of which “Challenger” will fly four times. The specific mission is as follows: Sixth flight: scheduled launch date is January 20, “Challenger” carry payload for the tracking and data relay satellite (TDRS), four random passengers, the flight time is