Patent ID: 6854394

Claim:
A method of reengineering a configuration of fin-stabilized discarding sabot with tracer projectile for firing from a given barreled weapon of given caliber (C), from an initial configuration to an improved configuration, wherein: when fired from said weapon with a first muzzle velocity of between 1300 and 1700 m/s the projectile achieves a steady state spin rate of less than 200 rps in said initial configuration, the method comprising: reengineering of the configuration of the fin blades of said projectile so that when fired from said weapon with a second muzzle velocity within 5% of said first muzzle velocity, the projectile achieves a steady state spin rate (SSSR) within lower and upper limits respectively defined by the lines: ( SSSR− 340)/( C− 25)=(99− SSSR )/(120− C ); and ( SSSR− 420)/( C− 25)=(122− SSSR )/(120− C ); wherein SSSR is in rps and C is in mm.