The technology of hypersonic projectiles is becoming mature from a metal physics perspective but there are still unsolved challenges relating to flight characteristics and aero dynamic stability. These projectiles deform under explosive loads and accelerate to hypersonic speeds in 2x10-6 seconds. In addition, these projectiles operate at sea-level conditions, a high-speed flight regime not commonly studied. The objective of this effort is to study the aerodynamics characteristics of deformable projectiles flying at hypersonic speeds and sea-level conditions. Because aerodynamic stability is critical for proper performance it is important to know what shapes should be avoided and which ones are acceptable. Since this was a short one-year IDP task the effort only focused on static body geometries, no deformable body calculations were attempted.
Hypersonic and Unsteady Flow Science Issues for Explosively Formed Penetrators
2006
22 pages
Report
No indication
English
Aerodynamics , Ammunition, Explosives, & Pyrotechnics , Fluid Mechanics , Aerodynamic stability , Symposia , Loads(Forces) , Explosives , Flight , Unsteady flow , Sea level , Plastic flow , Hypersonic flow , Deformable projectiles , Explosively formed penetrator warheads , Flight characteristics , Flight mechanics , Hypersonic projectiles