Back to results
US 2022/0214149 A1Published application
Penetrating and explosive projectile with stabilizing fin assembly
AssigneeNexter Munitions
InventorJulien PAVIER
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeNexter Munitions
InventorJulien PAVIER
Estimating the term…
The invention relates to a penetrating and explosive projectile (1) provided with a trajectory-stabilizing fin assembly (8) which is secured to a body of the projectile by a mechanical connection. The fin assembly (8) includes a tapped tube (14) which engages on a threaded rear cylindrical shank (10) of a tail (9) connected to the projectile body (2), thereby forming a threaded mechanical connection (13) between the tail unit (8) and the body (2). This projectile (1) is characterized in that it includes means ensuring the fragilization of the threaded connection (13) on impact on a target, the fin assembly then separating from the projectile body.
1- A penetrating and explosive projectile provided with a trajectory-stabilizing fin assembly which is secured to a body of the projectile by a mechanical connection, the fin assembly including a tapped tube which engages on a threaded rear cylindrical shank of a tail connected to the projectile body, thereby said mechanical connection is a threaded mechanical connection between the fin assembly and the body, wherein the projectile includes means ensuring fragilization of the threaded mechanical connection on impact on a target, so that the fin assembly then separates from the projectile body.
2- The penetrating and explosive projectile according to claim 1, wherein the projectile includes a fuze arranged at a rear part of the projectile, and the tail carrying the fin assembly includes a conical portion which connects to the body of the projectile.
3- The penetrating and explosive projectile according to claim 2, wherein the fin assembly also includes fragilization means consisting of breakage initiators arranged on the tapped tube of the tail, between fins of the fin assembly, wherein said breakage initiators are made as longitudinal grooves that ensure a thinning of the thickness of the tapped tube, an inertial advance motion of the fin assembly on the conical portion, upon impact of the projectile on the target, causing the grooves to break.
4- The penetrating and explosive projectile according to claim 3, wherein each fin includes a conical front part cooperating with the conical portion of the tail.
5- The penetrating and explosive projectile according to claim 3, wherein the front part of the tapped tube also includes a conical part in continuation of conical front parts of the fins.