Novel rapid calculation method for high-speed water entry trajectory of projectile

According to the invention, a novel rapid calculation model for the high-speed water entry trajectory of the projectile is provided. Based on the principle of independent cavitation expansion, the memory effect of the cavitation is considered, accurate calculation of the cavitation form and hydrodynamic force in the high-speed water entry process of the projectile is realized by establishing a new cavitation form algorithm and a wetting feature algorithm, and rapid calculation of the motion attitude and track of the rotary body in the high-speed water entry process is realized. The method can effectively calculate the generation, development, closing and other processes of the cavitation form in the high-speed water entry process of the projectile, and can accurately calculate the hydrodynamic force and the motion posture in the projectile operation process. The invention can provide a quick and effective calculation method for researching the high-speed water entry trajectory of the projectile and designing