Initial Analysis on the Key Technologies of Civil Aircraft Load Calibration Test

The load calibration test of civil aircraft is one of the crucial works of the loads verification flight test.The validity of flight test mainly depends on the reliability of calibration test.In order to improve the quality of calibration test,the key technologies of civil aircraft load calibration test is researched and summarized,including the selection of loads station,the typical layout of strain gauge,the determination of the magnitude of calibration loads,principle of load equations establishment,test report preparation and so on.The corresponding practical comments and proposal are raised.The research results can be used to proivide some technical guidance for civil aircaft flight load test.