"Heat transfer." . . "TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF." . . "Shock tubes." . . . . "Hypersonic nozzles." . . "Boundary layer." . . "Calibration." . . "Diaphragms(mechanics)" . . "Electrodes." . . "Density." . . "Velocity." . . "Test facilities." . . "Hypersonic wind tunnels." . . "High mach number and materials research program"@en . . . . . . . . . . . . . . . . . . . . "During the period 1 January 1959 to 30 June 1959, the development and testing of equipment was continued. A double diaphragm system was developed for the hypersonic shock tunnel. Experiments with the arc-heated driver were continued to obtain information concerning driver temperatures and pressures. Arc tunnel tests were continued. Primary emphasis was placed on the development of flow calibration techniques. The design of a largescale arc unit (1.5 megawatts) was completed. (Author)."@en . "Instrumentation." . . "Shock(mechanics)" . . "Reentry vehicles." . . "Enthalpy." . .