抛物线飞行是指随高性能失重飞机做抛物线飞行。利用高性能失重飞机做连续的开普勒抛物线飞行，可产生重复的失重环境。抛物线飞行并非真正意义上的太空旅游，它只能让游客体验约半分钟的太空失重感觉，宇航员在训练时为了体验失重通常也是采用这种方法。游客如果乘坐俄罗斯宇航员训练用的“伊尔-76”等飞机作抛物线飞行，费用约为5800美元。
测试是在一个抛物线飞行的航空器上，希望年底前能完成。
This will be done on a parabolic aircraft flight hopefully before the end of the year.
当飞机以抛物线飞行并暂时抵消部分重力时，学员将能体验到近似失重的状态。
Participants undergo near-weightlessness as the plane is flown in parabolic maneuvers that create temporary reduced gravity.
婚礼期间，这两位新人心里一定会十五只吊桶打水——七上八下（注1），因为这次航程将有15次过山车式的俯冲，持续时间30秒。这种飞行方式，用航空专业术语说，叫做抛物线弧形俯冲。
The newlyweds are sure to have butterflies in their stomachs because the trip includes 15 rollercoaster-type dives, known as parabolic arcs, which last up to 30 seconds.
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