No Umbrella At The End Separation Of Sensitive Shells With The Anti-collision Technology

The terminal sensing ammunition without parachute is a kind of new conceptual intelligent ammunition which is put forward to increase the overall combat effectiveness of terminal sensing ammunition with parachute. In order to solve the problem of crash between two submunitions, projectile base and pusher plate and the problem of separated distance between two submunitions after the submunitions of 120mm terminal sensing ammunition without parachute is ejected from carrier round, this article does research on the modeling and simulation of carrier round's exterior trajectory equation, the technology of submunition separation and the intensity of submunition in the course of ejection.In the research of the modeling and simulation of carrier round's exterior trajectory equation, through analyzing aerodynamic force and force moment that function on carrier round, the equation of mass center action and motion equation round mass center is created under some basic hypothesis, then, simulates the ballistic of 120mm terminal-sensitive ammunition without parachute so as to provide theoretical data and conclusions for the research on technology of submunition separation.In the research of the technology of submunition separation, first, analyzes and confirms the separated way of projectile base separation, pusher plate separation and submunitions separation. Next, builds the separated model for each other and verifies the correctness and credibility of separated model in theory and trial to get the result that the separated velocity of projectile base can reach 8.25m/s; the separated distance of bullet can reach 131.26m.In the research of bullets' intensity, analyzes the intensity and deformation of submunition and pusher plate in the course of ejection by ANSYS/LS-DYNA. After the analysis, it can be found that the intensity of submunition and pusher plate satisfies the requirement of design, and the deformation has little impact on the normal operation of submunition.The result of the research achieves the expected goal and it is believed to be of great importance and value for the relevant study of terminal sensing ammunition and explosive cluster warhead in future.