航天飞机着陆重量从95708千克增加到104327千克,这样,到1993年就能把累积重量大于45000千克的额外有效载荷送入轨道。通过结构分析和对着陆前机动飞行期间航天飞机受力进行研究表明,这个额外有效载荷重量增加是可以达到的。这一行动是很意外的,它使Rogers委员会非常担心的着陆安全问题。对航天飞机的轮胎、制动器和前轮操纵系统都已进行了改进。但预计航天飞 The space shuttle landing weight increased from 95,708 kg to 104,327 kg so that by 1993 an additional payload of cumulative weight greater than 45,000 kg could be put into orbit. Through structural analysis and studies of space shuttle forces during pre-landing maneuvering, it has been shown that this additional payload weight gain can be achieved. This move was unexpected, and it made the Rogers Council very worried about landing safety. Space shuttle tires, brakes and front wheel steering systems have been improved. But it is estimated that the space flight