Liquid Compressibility For High-speed Projectile Penetration Distance

The problem of non-destructive recovery of underwater projectiles has been a technical problem that restricts the further enhancement of underwater weapon systems.At this stage,the lack of sound underwater communication technology makes the non-destructive recovery of underwater high-speed projectiles in a wide range of areas will certainly face a huge investment in engineering costs.In this paper,we analyze the impact of liquid compressibility on the process and study the factors of liquid compressibility on the penetration distance of underwater high-speed projectiles for the purpose of nondestructive recovery.A recovery chamber device is designed to determine the size of the penetration distance during the motion of the underwater projectile,and a set of relevant equations is proposed to calculate the size of this penetration distance based on the existing theory.The type of projectile and the recovery medium are analyzed with reference to the available data of the underwater high-speed projectile in the multiphase flow process.Using the error-reducing SST k-ω model,the maximum values of the intrusion distance of the underwater high-speed projectile in different wrapping states of the bubble are simulated and used as the basis to verify the correctness of the equation for calculating the intrusion distance proposed in this paper,and then guide the design of the length of the recovery device.At the same time,the composition of the bubble medium is analyzed,and an innovative approach to optimize the penetration distance(reduction)is proposed from the projectile itself.The paper is guided by the existing theory to design and determine the length of the recovery chamber that can adapt to the underwater special head type projectile.At the same time,the results are verified and analyzed by combining the reference experiments and the AUTODYN used in the paper to verify the feasibility and universal significance of the relevant equations proposed in the paper.By compiling and applying the existing relevant scientific research results,an optimization method is proposed for the underwater high-speed projectile during the super-air bubble navigation phase,in order to achieve the purpose of shortening the full process invasion distance and reducing the engineering cost.