本文简要地叙述了产生“失重”和“低g”的方法,通过试验,证实了液体推进剂运载器在发射过程中的严重晃动问題,验证了“低g”流体力学理论分析的正确性和处理导弹工程的等效力学模型的实用性。通过歼教×失重试验机的试飞结果和理论的比较,证明试验数据可靠,有实用价值,已提供导弹工程作为设计依据取得了良好的效果。 In this paper, the methods of producing “weightlessness” and “low g” are briefly described. Through experiments, the severe shaking problem of propellant liquid propellant during launching is confirmed. The correctness of “low g” Practicality of Equivalent Mechanical Model for Missile Engineering. Through the test results and theoretical comparison of the FJL weightlessness testing machine, it is proved that the experimental data are reliable and have practical value. The missile engineering has been provided as a good basis for design.