运载中的航天仪器动力学研究

Research of dynamics of spaceflight apparatus during transportation

分析了不同路面、不同车速条件下运载航天仪器的随机振动响应,对航天仪器进行了随机振动试验.研究了试验的实用技术和控制方式的选择要点,保证了航天仪器在汽车运载中的安全性.分析了低频振动环境与结构振动特性的关系及其对航天仪器结构的影响和危害,研究了低频振动环境的模拟试验方法.只要选择路面状况和材料特性,便可显示汽车和航天仪器采用缓冲材料包装后的响应.实验结果表明航天仪器能够适应安全运载要求.

Based on tests of random vibration of spaceflight apparatus, its random vibration resporse during transportation on different road and at different speed is analyzed. The techniques and control methods are studied to gaurantee the safety of spaceflight apparatus during transportation. After analyzing the relationship between the environment of low frequency vibration and the structural dynamic properties and the effect to spaceflight apparatus structure, the simulation test methods are investigated. With the simulation system, the respanse of automobile and spaceflight apparatus with cushioning packaging are shown on screen, while road condition and package material parameters are input. The experiments results show that the spaceflight apparatus can be transported safely.