The mechanics calculation of parabolicspace rigid frame isv ery complicated, without being dealt with in issued directories, documents and textbooks.
抛物线形空间刚架的力学计算十分复杂 ，在已有的手册、资料、教材中均未叙及。
2
To recreate the weightless experience without going into space, the plane executed parabolic flight maneuvers, climbing sharply and descending several times during the one-hour flight.
为了不上太空而体验失重，飞机进行了“过山车”式的俯冲，在一小时的飞行期间，迅速爬升和下降。
3
To recreate outer-space conditions of micro-gravity, the plane performed 6 parabolic flight 7 maneuvers over the Gulf of Mexico after 8 taking off from north Florida.