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本文通过航天飞机STS-1～STS-5飞行任务获得的数据,评定轨道器有效载荷舱的低频载荷及动态特性。概要地给出了起飞的外部载荷环境和着陆碰撞条件,给出了轨道器各个位置上加速度计的数据,并与分析值进行了比较。STS-2～STS-5任务中测量的起飞加速度数据重复性较好,数值比STS-1低得多,这是因为航天飞机固体火箭助推器的过压载荷降低了。准静态条件的环境低于整个飞行设计要求。STS-3的着陆条件和响应接近极限,但其他几次飞行则比较正常。对分析数据和试验数据的频率含量进行了比较。本综述的主要重点是证明空间运输系统的设计载荷环境充分囊括了飞行响应。
Based on the data obtained from the space shuttle STS-1 ~ STS-5 missions, this paper evaluates the low-frequency loads and dynamic characteristics of orbiter payload bay. The external load environment and landing collision conditions of the take-off are summarized. The data of the accelerometer at each position of the orbiter are given and compared with the analyzed values. The take-off acceleration data measured in the STS-2 to STS-5 missions are more reproducible and significantly lower than the STS-1 due to the reduced overpressure loading of the space shuttle’s solid rocket booster. Quasi-static conditions of the environment is lower than the entire flight design requirements. STS-3’s landing conditions and response are nearing limits, but several other flights are more normal. The frequency content of the analytical and experimental data was compared. The main focus of this review is to demonstrate that the design loading environment of the space transportation system fully embodies the flight response.