STABILIZING BLOCK ADDITION TO A LAUNCH CHARGE WITH FORCEFUL UNFOLDING OF THE FINS TO BE INCLUDED IN PROJECTILES FOR USE WITH RPG-7B ROCKET PROPELLED GRENADE LAUNCHER

摘要

The invention aims at ensuring a stable flight along the trajectory for the currently used grenade types, reducing probable deviations in their technical characteristics, increasing the distance of the direct shot and the maximum effective distance to the target, increasing the maximum range of the grenades (with or without a jet motor) with fragmentation, high-explosive, shaped charge fragmentation, thermobaric, and other action. It guarantees compatible outer ballistic characteristics for newly-developed grenade types having a higher caliber and a bigger warhead weight in comparison to the ammunition currently used for the RPG-7B. The task has been solved in way which enables a reliable function of the stabilizing block when working in an aggressive medium û momentary temperature up to 3273à3473K (3000à3200?C) and pressure of 85à90 MPa. The design presents a stabilizing block with a cross-shaped part which comprises a set-in mechanism intended for forceful unfolding of the fins of the grenade stabilizer immediately after the grenade has been propelled out of the launcher. The design allows for compensating both the lack of adequately high centrifugal forces due to turbine actionalone and the low initial velocities for grenades having a higher caliber and a bigger warhead weight which possess a high inertia moment and slow rates of rotation. The forceful unfolding of the fins immediately after the grenade has been propelled out of the launcher leads to quick fading of interfering fluctuations resulting from the stabilizer action, thus considerably reducing the flight stabilization time before the jet motor is initiated. A stable flight along the active and passive trajectory of the grenade is attained, probable deviations in grenade technical characteristics are reduced, an increase in the distance of the direct shot and the maximum effective distance to the target is achieved. An increase in the maximum range of the grenades (with or without a jet motor) with fra