The Evaluation Method Of Cruise Missile Flight Test District Safety

The flight test of the Cruise missile is an indispensable step in the process of the missile development. The fault missie is a threat to protected targets in the flight. The main content of this dissertation is to assess the risk of protected targets, in order to determine the feasibility of the program.Understanding this requires us to analyse the safety of the flight test in order to determine the reasonal of the flight test program and the risk of the protected targets.This thesis aims at giving a summary of the definition and properties of the safe assessment.Based on the essential relationship between the overall program and the calculation process,this thesis mainly discusses the key technology,including the safety analysis, evalution and the testing. The main results are as follows:(1) The failure mode effects analysis (FMEA) method,define three kinds of failure patterns of the missile,provide a theoretical basis for the safety assessment of the missile flighting test.(2) The fault tree analysis (FTA) method, give the probability of occurrence of the failure mode, give the failure probability of the missile.(3) Establish a trajectory model for the failure, calculate the impact point dispersion of the missile, distribution type and parameter values.(4) Provide the method of trajectory integral, calculate the probability of the falling missile, verify the reasonableness of the algorithm.Basing on the failure mode effects analysis (FMEA),the fault tree analysis(FTA), and simulation technology of the fault trajectory,the failure mode of missile is analyzed, and FMEA、FTA and fault trajectory simulation technology and probability density integration algorithm are used to calculate the threat to protected targets,in order to determine the security of the test.