Poèmes projectiles

Microspoiler Actuation for Guided Projectiles

The goal of this project was to further mature microspoiler technology to the extent that it could be incorporated into current and future smart weapons designs. Several program objectives, including mechanical design and fabrication, trade study analysis, and limited flight experiments were defined as a collaborative effort between the Georgia Institute of Technology (Georgia Tech) and the Arm...

Detonation initiation by hypervelocity projectiles

Abstract: We report experimental studies on the initiation of detonations by hypervelocity projectiles in hydrogen-oxygen-nitrogen mixtures. The experimental facility T5 at Caltech was modified to launch 25-mm diameter projectiles at speeds around 3000 m/s. Flow visualization and pressure measurements are reported for several mixture conditions. A clear transition between shockinduced combustio...

Deceleration of projectiles in sand

Penetration of projectiles was measured for hemispherical and conical nose shapes penetrating granular media. Targets were beds of Ottawa sand and Eglin sand. Projectiles were rigid metals. Experimental parameters that were varied included velocity (from 300 to 600 m/s), nose shape, sand density, and scale (from 5 mm to 20 mm). Strong evidence for scale effects is found: 5 mm diameter projectil...

Aerodynamic Symmetry of Projectiles 1

Isospin Observables in Multifragmentation of Relativistic Projectiles

Multifragmentation is a universal phenomenon occurring when a large amount of energy is deposited in a nucleus. It was observed in high energy nuclear reactions induced by hadrons and heavy ions. It is believed to be a manifestation of the nuclear liquid-gas phase transition which is also expected to occur in crusts of neutron stars and in supernova explosions. This reaction offers a unique pos...