Abstract
Currently, the supercavitating projectiles mostly rely on experience or experimental results to test the shape of the projectile; however, the cost of the experiment is relatively high, and there is no specific criterion to judge whether the underwater projectile is stable. To solve the aforementioned problems, we study the motion stability and establish motion equations for supercavitating projectiles. Through theoretical analysis and simulation calculations, the optimal center of mass position is designed to optimize the motion performance of underwater supercavitating projectiles. We think this work can provide theoretical support for the optimal design of underwater supercavitating projectiles.
Highlights
When the vehicle is moving at high speed underwater, supercavitation is formed on the surface of the vehicle
We study the motion stability and establish motion equations for supercavitating projectiles
The energy consumption gap is nearly the same, which makes the range of no obvious difference; the center of mass is only increased by a centimeter order of range
Summary
When the vehicle is moving at high speed underwater, supercavitation is formed on the surface of the vehicle. The literature [12] obtained through theoretical analysis of the force of the projectile: when the projectile has the same shape and other conditions such as the length of the projectile, the forward movement of the center of mass is beneficial to the linear movement of the projectile and is beneficial to Journal of Sensors keep stability of movement of the projectile underwater. Zhao et al [16] studied the influence of the position of the center of mass on the motion of the tail shot and obtained the effect of the tail shot motion on the symmetry of the supercavitation, and the supercavity surface wall at the collision point develops in the direction of the supercavitating projectile rotation. We think this work can provide theoretical support for the design of supercavitating projectiles
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