Oerlikon Contraves Pyrotec Ag

Pierre H Freymond

Klaus Muenzel

A method for correcting a pre-programmed time of disaggregation of a spin-stabilized projectile. For this purpose the deviation of the actual muzzle velocity from the theoretical muzzle velocity is taken into consideration. The actual muzzle velocity is determined with the aid of the effects of a magnetic field on the projectile indirectly by means of the actual rotation frequency of the projectile, wherein the actual rotation frequency of the projectile is determined during a time-limited calibration phase directly following the firing of the projectile. The device for executing this method includes means for storing the time of initiation, programmed on the basis of the theoretical rotation frequency of the projectile, means for determining the actual rotation frequency of the projectile, and means for correcting, or respectively updating of the theoretical time of initiation toward the actual time of initiation on the basis of the actual rotation frequency, or respectively muzzle velocity of the projectile. The employment of the device is intended to increase the effectiveness of a weapons system for attacking targets by means of fuse-time-fixed projectiles.

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Zollikon, Switzerland

Pierre H Freymond