Design And Analysis Of General Scheme For Underwater Rocket

The underwater rocket is the medium and small caliber ammunition working in water, mainly used by the small underwater "frogman" unit etc. The characteristics of convenient carrying, great power and area destruction make it become a powerful weapon for underwater individual combat. Research and development of underwater rocket Fuze has an important significance for improving the integrated combat effectiveness, such as accuracy and damage etc.According to the working process, external trajectory environment, target missile intersection and the overall design request of Fuze, the overall scheme of the underwater rocket Fuze was designed and analyzed. The followings have been completed:Firstly, the overall scheme of the Fuze (mainly including the safety mechanism, firing mechanism, explosion sequence, control circuit and Fuze power etc) were designed and analyzed. Secondly, a dynamic simulation through LS-DYNA software was carried on to analyze the effects of water environment and the projectile head structure on the process missile hitting target and study on the deformation of Fuze switch and acceleration features of Fuze component during the process missile hitting target with different speed and different angle. Finally, principle prototype was developed and simulation tests were carried out. On the one hand, experiments were conducted in a water tunnel, measuring rotating speed of the built-in turbine under different speed to verify the feasibility of turns-counting for arming. On the other hand, an experimental platform was designed and low-speed collision simulation experiments in water were conducted to verify the feasibility of firing strategy.In this dissertation, theoretical analysis, simulation calculation and simulation experiments are combined to analyze the overall scheme of the Fuze. Results show that the turbine rotating speed has a good linear relationship with the projectile velocity having a small starting speed (about 2m/s). So it’s feasible to use the method of turbine turns-counting for arming. The missile has a significant sustained creep force after it loses power, which can be used as another environmental incentive for arming. And the acceleration signal test and control circuit works stably, and can realize the established function.