Six-Degree-of-Freedom Ballistic Simulation of Underwater Anti-Frogman Rocket

As a new type of preset weapon for coastal port defense, underwater rockets have the advantages of high speed, high lethality, and convenient use, which can effectively resist the invasion of the enemy frogman. To deeply explore its underwater ballistic-navigation characteristics, taking a certain type of underwater rocket as the research object, a hydrodynamic ballistic motion model was established, and the six-degree-of-freedom ballistic-navigation characteristics of the underwater rocket were simulated based on VC++ language self-programming, and its navigation stability was verified through of the underwater launch test. The results show that the rocket with an initial velocity of 100 m/s decreases to 65 m/s within 4.3 s and tends to be stable under a certain initial angle of attack, the ballistic horizontal range reaches 660 m, and the rocket height breaks through 37 m, the pitching angle of the rocket changes from 12° to -7° within 4s, the pitching angular velocity fluctuates from 5° to -8° in 3 s, the angle of attack changes from 5° to -6°, the trajectory tilt angle changes from initial -10° to -12°. This study can provide a reference for the ballistic design of a new generation of underwater anti-frogman preset weapons.