"Hypersonic characteristics." . . "Materials." . . "AEROSPACE CORP EL SEGUNDO CA." . . "Blunt bodies." . . "Differential equations." . . "Lift." . . "Theory." . . "Instrumentation." . . "Combustion." . . "Reynolds number." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "High mach number and materials research program. phase i. aerophysics research studies"@en . . "Instrumentation, Vacuum systems, Computers, Simulation.) (*Mach number, Reynolds number, Lift, Drag.) Theoretical and experimental investigations of high speed gas dynamics were carried out. The experimental investigations included stagnation point heat transfer measurements in low Reynolds number flows in the existing helium-driven shock tunnel. Electron beam densitometer studies were continued. Modification of the existing hypersonic shock tunnel to incorporate a combustion driver and a six-foot diameter nozzle was initiated. This modification will allow an increased performance up to a Mach number equal to 30 and density altitudes to 300,000 feet. The theoretical investigations included a study of viscous and inviscid non-equilibrium hypersonic flows about blunt and sharp leading edge slender bodies."@en . . . . . . . . . . . . . . . . . . . . . . . "Guided Missile Reentry Vehicles." . . "Hydrogen." . . "Hypersonic nozzles." . . "Numerical analysis." . . "Velocity." . . "Reentry vehicles." . . "Boundary layer." . . "Ceramics, Refractories and Glass." . . "Hypersonic flow." . . "Aerodynamic characteristics." . . "Simulation." . . "Atmosphere entry." . . "Nose cones." . . "Bodies of revolution." . . "Cylindrical bodies." . . "Vacuum apparatus." . . "Hypersonic vehicles." . . "Pressure." . . "Helium." . . "Density." . . "Electron beams." . . "Spheres." . . "Sheets." . . "Shock tubes." . . "Test facilities." . . "Computers." . . "Plasmas(physics)" . . "Partial differential equations." . . "Measurement." . . . . "Heat transfer." . . "Numerical integration." . . "Mach number." . . "Shock waves." . . "Drag." . . "Gas flow." . . "Electron guns." . . "Nozzles." . .