| 摘要 |
A method to increase the penetration of kinetic energy penetrating weapons designed to engage hardened and hardened deeply buried targets. The concept utilizes a projecting nose pin on the front of the penetrator to establish a terradynamic cavity similar to hydrodynamic cavities generated when certain projectiles penetrate water at velocities sufficient to penetrate in a supercavitation mode. The creation of a terradynamic cavity in which only the nose pin is in contact with the material being penetrated significantly reduces the drag of the penetrator enabling it to penetrate deeper into various media than other more conventional designs. The invention uses two modes of penetration. A guided mode is employed where the penetrator, with its projecting nose pin, normally would be unstable and is maintained stable in a straight-line trajectory utilizing an inverse, angle-angle rate guidance law and jet reaction control system. The guided mode also can be used on a normally unstable penetrator penetrating in a cavity penetration mode to change the trajectory and guide the penetrator on a predetermined path using best remaining path guidance concepts. An unguided penetrator mode utilizes a standoff pin which reduces the drag but is tailored so that the penetrator, in the penetration process, is normally stable and penetrates in a straight-line.
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