US2025076013A1PendingUtilityA1

Jacket projectile

Assignee: SWISSP DEFENCE AGPriority: Mar 8, 2023Filed: Mar 8, 2024Published: Mar 6, 2025
Est. expiryMar 8, 2043(~16.6 yrs left)· nominal 20-yr term from priority
F42B 12/06F42B 12/78
34
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A jacket projectile, in particular an armor-piercing projectile, for ammunition, in particular with a caliber of less than 13 mm, may include a core, a jacket, in particular tapering ogive-like and surrounding the core, and a guide shoe arranged between the core and the jacket. The material of the jacket and the guide shoe may be matched to one another in such a way that a quotient of a modulus of elasticity/density ratio(Eguide⁢shoeρguide⁢shoe)of the guide shoe to a modulus of elasticity/density ratio(Ecoreρcore)of the core is greater than 0.5, in particular greater than 0.55 or greater than 0.6.

Claims

exact text as granted — not AI-modified
1 . A jacket projectile for ammunition, the jacket projectile comprising:
 a core;   a jacket surrounding the core; and   a guide shoe arranged between the core and the jacket,   wherein a material of the jacket and the guide shoe are matched to one another to provide a quotient of a modulus of elasticity/density ratio   
       
         
           
             
               ( 
               
                 
                   E 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
                 
                   ρ 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
               
               ) 
             
           
         
       
       of the guide shoe to a modulus of elasticity/density ratio 
       
         
           
             
               ( 
               
                 
                   E 
                   core 
                 
                 
                   ρ 
                   core 
                 
               
               ) 
             
           
         
       
       of the core is greater than 0.5. 
     
     
         2 . The jacket projectile according to  claim 1 , wherein:
 the core is made of metal, and/or has a unitless modulus of elasticity/density ratio of 40 to 45; and/or   the guide shoe is made of steel or aluminum, and/or has a unitless modulus of elasticity/density ratio of 25 to 30.   
     
     
         3 . The jacket projectile according to  claim 1 , wherein the guide show is adapted to dampen vibrations of the core based on a matching of the modulus of elasticity/density ratio 
       
         
           
             
               ( 
               
                 
                   E 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
                 
                   ρ 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
               
               ) 
             
           
         
       
       of the guide shoe and the modulus of elasticity/density ratio 
       
         
           
             
               ( 
               
                 
                   E 
                   core 
                 
                 
                   ρ 
                   core 
                 
               
               ) 
             
           
         
       
       of the core. 
     
     
         4 . A jacket projectile for ammunition, comprising:
 a core;   a jacket and surrounding the core; and   a guide shoe arranged between the core and the jacket, wherein:
 a length of the core in a longitudinal direction of the projectile of 50% to 95% of a total projectile length; and/or 
 a length/diameter ratio of the core is 3 to 7. 
   
     
     
         5 . A jacket projectile for ammunition, comprising:
 a core;   a jacket and surrounding the core; and   a guide shoe arranged between the core and the jacket;   wherein a first minimum wall thickness of the guide shoe in a portion of a cylindrical hull section is 10% to 20% of a maximum core diameter.   
     
     
         6 . The jacket projectile according to  claim 5 , wherein the guide shoe has a rear-sided bottom, wherein a first section of the rear-sided bottom tapers against a direction of flight, a second minimum wall thickness of the first section of the rear-sided bottom being at least 90% of the first minimum wall thickness of the guide shoe. 
     
     
         7 . The jacket projectile according to  claim 5 , wherein a second section of the guide shoe forming one end of the guide shoe has a third wall thickness of at least 100% of the core diameter. 
     
     
         8 . The jacket projectile according to  claim 5 , wherein a length of the guide shoe in a longitudinal direction of the projectile; is at least 100% of a caliber diameter of the jacket projectile, and/or corresponds to at least one length of the core in the longitudinal direction of the projectile. 
     
     
         9 . The jacket projectile according to  claim 5 , wherein bottom faces of the core, jacket, and guide shoe are adapted to lie on top of one another, be oriented transversely to a longitudinal direction of the projectile, and be pressed against one another. 
     
     
         10 . The jacket projectile according to  claim 5 , wherein the core comprises a rear-sided rear section which tapers against a direction of flight and which is arranged at a constant distance from a tail section. 
     
     
         11 . The jacket projectile according to  claim 10 , wherein the constant distance is 0.025 mm to 0.6 mm. 
     
     
         12 . The jacket projectile according to  claim 5 , wherein: the guide shoe and the jacket are made from one piece; or the core and the guide shoe are made from one piece. 
     
     
         13 . The jacket projectile according to  claim 5 , wherein the jacket is formed in two parts and/or has a hull-like. 
     
     
         14 . The jacket projectile according to  claim 5 , wherein the jacket comprises a cylindrical, rear part and a front part connected thereto, the core being encapsulated by the front part and the rear part. 
     
     
         15 . The jacket projectile according to  claim 2 , wherein the guide show is adapted to dampen vibrations of the core based on a matching of the modulus of elasticity/density ratio 
       
         
           
             
               ( 
               
                 
                   E 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
                 
                   ρ 
                   
                     guide 
                     ⁢ 
                        
                     shoe 
                   
                 
               
               ) 
             
           
         
       
       of the guide shoe and the modulus of elasticity/density ratio 
       
         
           
             
               ( 
               
                 
                   E 
                   core 
                 
                 
                   ρ 
                   core 
                 
               
               ) 
             
           
         
       
       of the core to each other. 
     
     
         16 . The jacket projectile according to  claim 1 , wherein:
 a length of the core in a longitudinal direction of the projectile of 50% to 95% of a total projectile length; and/or   a length/diameter ratio of the core is 3 to 7.   
     
     
         17 . The jacket projectile according to  claim 1 , wherein a minimum wall thickness of the guide shoe in a portion of a cylindrical hull section is 10% to 20% of a maximum core diameter.

Join the waitlist — get patent alerts

Track US2025076013A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.