PROJECTILE WITH LIMITING RANGE Russian patent published in 2003 - IPC

FIELD: production of a new considerable improved training projectile. SUBSTANCE: the projectile middle part (110) has a rotation retardation increasing section (100) passing in the longitudinal direction. Section (100) has a great number of elements in the form of grooves (120) located side by side, or flat shears (220) in the body passing in the longitudinal direction between the nose (20) and rear (30) parts. The elements pass in the outside direction by no more than approximately by the depth of the recess. The height of the elements exceed at least by two times the thickness of the loss of the pulse of the projectile boundary layer. The quantity of groove (120) make up 4 to 12. The rear part (30) may contain may contain a great number of connecting slots (140) determining the angle of inclination β of the mentioned grooves (120), which may pass radially in the outside direction, perpendicularly to the axis (710) of rotation. The elements of the rotation retardation section may be inclined relative to the longitudinal axis (710) in the direction of inflowing air. The quantity of flat shears (220) may make up 4 to 12. The flat shears (220) may be uniformly distributed around the edges of the projectile. EFFECT: considerably reduced range of the training projectile, which results in a decrease of the area of the proving ground. 11 cl, 16 dwg, 2 ex