Abstract: A fin deployment mechanism for a projectile. The mechanism includes at least one fin and at least one actuator. The fin is arranged in a deployable and retractable manner on the projectile. The fin and at least one balance weight are arranged so that, when the fin is deployed, the weight is displaced towards a center of the projectile and, when the fin is retracted, the weight is displaced from the center of the projectile. A method for deploying and retracting fins on a projectile. At least one fin is arranged in a deployable and retractable manner on the projectile. The fin is fitted to at least one balance weight such that when the fin is displaced from the center of the projectile the weight is displaced towards the center, and when the fin is displaced towards the center of the projectile the weight is displaced from the center.

Abstract: The invention relates to a projectile (6) provided with a slipping rotating band (1) which is designed for firing from a weapon system with a rifled barrel. The rotating band (1) comprises an inner ring (2) and an outer ring (3) that seals against the barrel. The outer ring is fitted on the outer surface of the inner ring and the inner ring is slippably fitted on the projectile. The rotating band (1) is configured to remain fitted on the projectile (6) from launcher to target by virtue of the fact that the inner ring (2) is made of fibre-reinforced polymer composite or particle-reinforced polymer composite, or fibre-reinforced metal matrix composite or particle-reinforced metal matrix composite. The invention also relates to a slipping rotating band (1) and to a method for producing a slipping rotating band (1) in which the outer ring (3) is affixed to the inner ring (2).