| 摘要 |
The subject of the invention is an anti-friction belt for projectiles of any calibre, fired from a rifled barrel. It consists of a spiral 3 with several turns, made from a plastic alloy and arranged in a housing 2 made on the projectile, the direction of winding of the spiral being identical to that of the rifling 12 of the gun barrel. A pellet 8 is located between the front edge of the housing 2 and the spiral 3. The outer diameter of the spiral 3 is substantially greater than the diameter of the rifling 12 of the gun barrel. Application to projectile firing from highly rifled barrels. <IMAGE>
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