Abstract: Tracer visibility of APFSDS projectiles can be enhanced through a combination of increased steady state spin rate, reduced muzzle obscuration, and optimized airflow over the stabilizing fin geometry of the sub-projectile. The preferred means to increase steady state spin rates of the sub-projectile is to incline or deflect the fin blade tip portion, creating a larger, hotter burning, tracer plume.

Abstract: Tracer visibility of APFSDS projectiles can be enhanced through a combination of increased steady state spin rate, reduced muzzle obscuration, and optimized airflow over the stabilizing fin geometry of the sub-projectile. The preferred means to increase steady state spin rates of the sub-projectile is to incline or deflect the fin blade tip portion, creating a larger, hotter burning, tracer plume.

Abstract: Tracer visibility of APFSDS projectiles can be enhanced through a combination of increased steady state spin rate, reduced muzzle obscuration, and optimized airflow over the stabilizing fin geometry of the sub-projectile. The preferred means to increase steady state spin rates of the sub-projectile is to incline or deflect the fin blade tip portion, creating a larger, hotter burning, tracer plume.

Abstract: An igniter composition, and a method of manufacturing the igniter composin, comprised of an oxidizer dispersed in polyurethane resin using anhydrous acetone as a solvent. The polyurethane resin is cured at room temperature and granulated to form a granulated igniter. The granulated igniter may be blended with powdered magnesium. Preferably, the oxidizer is strontium peroxide and the amount of polyurethane resin is approximately 10 to 14 parts by weight and the amount of strontium peroxide is approximately 90 to 86 parts by weight, the ideal mixture is 12 part by weight polyurethane resin and 88 parts by weight strontium peroxide.

Abstract: A pyrotechnic mixture for use in tracer rounds of projectiles to increase sibility under high speed conditions when viewed through laser hardened optics, comprising, in percentages by weight, an admixture of 20% to 40% magnesium, 10% to 30% strontium nitrate, 3% to 8% sodium nitrate, 3% to 20% barium peroxide and 1% to 5% viton. Additional ingredients that increase the pyrotechnic effectiveness are 0% to 5% aluminum, 0% to 15% potassium perchlorate, 0% to 5% manganese dioxide, 0% to 10% iron oxide as Fe.sub.2 O.sub.3, 0% to 15% potassium nitrate, 0% to 10% Teflon and 0% to 1% ethyl cellulose.

Abstract: A combination percussion-electric primer operable in a percussion mode or an electric mode, which includes the elements of a primer cup, in which an electrically-conducting contact button is disposed at one end thereof, and a booster charge supporting cup is disposed within the other end of the primer cup. A space between the contact button and supporting cup is adapted to receive a supply of priming composition.

Abstract: An incendiary projectile containing incendiary mix in its nose portion and n armor piercing penetrator within the projectile and carrying a spirally wrapped, lead sheathed incendiary mix in its peripheral surface. The lead sheath incendiary mix is in contact with the nose portion incendiary mix. The incendiary means are initiated as the penetrator enters the wall of an armored target and portions of the incendiary means burn on both sides of the penetrated target.

Abstract: A projectile capable of detecting toxic agents in the atmosphere at long ge, particularly halogen containing materials, containing therein a pyrotechnic composition comprising magnesium, calcium resinate and strontium nitrate. The projectile has an orifice therethrough along its longitudinal axis to enable the projectile to sample the atmosphere as it travels therethrough.