After The Fuse Sit Liquid Damping Insurance Theory Study

The setback force of rocket, mortar and recoilless gun in launch environment is far lower than impact force in drop environment, which increased the difficulty of distinguish between the launch environment and the drop environment. In order to resolve the contradiction between reliability arming in launch and the safety in handling transportation and storage, the theory of damper absorber is used in setback arming device and the dynamic model of setback liquid damper arming device is established according to the theory of fluid mechanics. The movements of the setback liquid damper arming device under rectangular pulse and triangle pluse are analyzed in detail. The calculation formulae of the maximal displacement response on two conditions are deduced.In order to provide a theoretical guidance for the design of fuze setback arming device, the effect factors on the displacement response of setback arming device were analysed. The analytical results indicated that with proper structure parameters this device could distinguish between launch environment and drop environment well. A setback liquid damper arming device is designed basically for 80 g launch overload environment of a rocket. The feasibility of this device is proved with ADAMS emluator. A setback liquid damper arming device is designed basically for 15 g launch overload environment of a missile. The feasibility of this device is proved with ADAMS emluator also.