"Ballistics." . . "Projectiles." . . "Guns." . . "Computerized simulation." . . "Military history." . . "Range(extremes)" . . . . "ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD." . . "Propulsion systems." . . "Ammunition and Explosives." . . . . . . . "A Brief Journey Through the History of Gun Propulsion"@en . . "While the use of guns and gun-like devices extends back in history for more than a millennium the past century has been marked by significant advances in the technology of guns the projectiles they launch and the propulsion systems employed to launch these projectiles to ever-increasing velocities. This report chronicles a sampling of theoretical and experimental advances in the science of gun propulsion and its application to a wide range of practical gun propulsion concepts."@en . . . . . . . .