The test and launch in an aerospace experiment is a complex system project.It is very difficult to get a satisfied result by use of the the classical PERT.

• 航天试验的测试发射是一个复杂的系统工程，因而在测试发射工程的组织指挥及管理中使用经典PERT网络计划技术，往往很难达到满意的效果。