Aerodynamic Design And Ballistic Calculation Of An Individual Rocket Special Projectile

It was showed that, in recent several partial wars, individual weapon system has received more and more attention of the military experts, because of its easy to carry and flexible in use, also can adapt to the complex environment of the war. The development of individual multi-purpose crucial weapon already became the important trend in every country’s individual weapon system. The special projectile in this paper is very belong to this kind of individual multi-purpose crucial weapon, is mainly used to destroy top armor.The main problem in this paper is the aerodynamic configuration of the special projectile:adding a pair of wrap around fins by ordinary projectile at the body. Pre-launch, the wrap around fins are fold in the launch tube. When it launches from the muzzle the wrap around fins will rapidly unfold a certain angle and fix form a stable airfoil. The design of the aerodynamic configuration was on the base of experience formula and engineering experimental curve and compared the numerical simulation results that including:external flow field, resistance coefficient, lift coefficient and the center of pressure. Meanwhile, using the MATLAB simulate projectile’s law of centric motion in ideal situation. Finally through the experiments tracking projectile’s flight attitude, further optimize the overall design.In this paper, effectively using of the modern fluid simulation software has provided theoretical basis for design of the aerodynamic configuration and through the experiment for inspection. This thought has been provided a certain experience and method for the similar design in the future.