Experimental study on arc windshield of fighter subjected to bird impact

The experimental study on arc windshield of fighter subjected to bird impact is presented. In order to understand the influences of boundary conditions and relative parts on dynamic response, the specimens include arc windshields and relative parts of fighters. The dynamic response process is recorded using the high speed video camera. The critical impact velocity for PMMA arc windshield is found. The displacement history and strain history of the dynamic response are obtained. The changing rules of displacement-velocity on key points are analyzed. The relationship between critical velocity and strain is given. Also, the value of the dynamic stress of windshield subjected to bird impact is computed. The valuable data are provided to engineers for designing, researching and producing new windshields with high crashworthiness.