欧洲航天局用失重飞机实验取得丰硕成果利用飞机作抛物线飞行，可以产生２０～３０ｓ的微重力时间，以此进行物理学和生命科学方面的微重力研究，同时还可以对航天器上使用的仪器设备进行飞前检测或鉴定；又可以对航天员进行生理测试和适应性操作训练。因此，失重飞机已经... European Space Agency Achieved Profitable Results with Weightless Aircraft Experiments Using aircraft for parabolic flight can produce microgravity time of 20-30s for microgravity research in physics and life sciences and can also be used for spacecraft instrumentation Equipment for pre-flight detection or identification; astronauts can also conduct physiological tests and adaptive operation training. Therefore, weightless aircraft have been ...