Research on small sample maintainability experimentation and evaluation of weapon system

In order to verify the index of small sample maintainability experimentation reasonably and save experimentation costs, it analyzes deficiency in common maintainability evaluation method, based on small sample maintainability experimentation features of weapon system, from an engineering perspective, and by using Bayesian theory and prior information. It provides a sequential posterior odd test method (SPOT) and a truncated SPOT to verify maintainability index. Taking the maintainability experimentation and evaluation of a torpedo launcher as example, the method's effectiveness and feasibility are proved.