Study on Safety Evaluation of Coach Helicopter Training System
Xiaobin Li · Zhongguo anquan kexue xuebao · 2012
Seeing that the data of security risk decision-making system for the coach helicopter are less and the system is not clear,in order to guarantee the safety of the coach helicopter,and prevent accidents,a safety evaluation model of the coach helicopter training system based on fuzzy D-S evidence theory was proposed,The evaluation index system of the coach helicopter training system was established from four systems,which were people,aircraft,environment and management.The fuzzy evaluation was applied to assess the factors influencing the coach helicopter system's safety.The recursion algorithm of the D-S evidence theory was used to compose the assessment levels of the different influencing factors.A certain type of the coach helicopter was taken as an example to provide the steps of the evaluation.The results show that this method is suitable for assessment of the safety of the coach helicopter,according to the quantized values,it can quickly rank the systems in order of safety performance.