Design and dynamic simulation of rotating-folding retracting mechanism for rubber

In view of the current situation which the existing retracting mechanism for rubber cannot be applied to small intelligent munitions, a rotating-folding retracting mechanism for rubber was designed, in order to satisfy the requirement of small intelligent munitions. The rubber retracting mechanism was designed based on the analysis of the rudder movement. A 3D mode of the rubber retracting mechanism was built by UG-NX6 software, which was imported into ADAMS to get a virtual retracting mechanism for dynamics simulation. The main factors that affect the dynamics of the retracting mechanism were analyzed to obtain optimized design parameters. The simulation results show that the movement of mechanism is reliable, quick and accurate, impact load on projectile body is small, and the total opening time is 375.5 ms after optimization, which satisfy the requirement of designing folding rubber for small intelligent munition. After folding, the overall diameter of rubber is 63 mm, that effective implementation of the smart intelligent munitions is achieved.