由于人们对航天飞机固体火箭发动机能够承受的工作环境条件认识不足,从而发生了飞行事故。要修改设计以排除故障源和恢复飞行,就需要制定比第一次飞行前更加严格的试验大纲,审定设计构思和设计文件所提的功能和极限要求,保证设计的最终质量。进行了大量新的和更广泛的试验,以充分了解新设计对诱导环境和自然环境的响应;用缩比、全尺寸/短程起动以及全尺寸/全程起动对发动机构件进行试验,以取得结构和热分析模型是必须做到的;在从发生事故到恢复飞行这段时间里要完成扩大试验大纲,弄清很多问题,是一项重大的工程。 Flight accidents have taken place due to a lack of understanding of the conditions under which working conditions of the space shuttle’s solid rocket motors can endure. To modify the design to eliminate the source of the problem and to resume the flight, a more rigorous pilot program than before the first flight needs to be developed to validate the functional and extreme requirements of the design concept and design documents and to ensure the final quality of the design. Numerous new and more extensive trials were conducted to fully understand the response of the new design to the induced environment and the natural environment; experiments were conducted on engine components with reduced-size, full-size / short-range starting and full-size / full starting to obtain structure and The thermal analysis model is a must; it is a major project to complete the expansion of the pilot program and to understand many issues from the time of accident to the time of resumption of flight.