THE HIGH TEMPERATURE HEATER AND EVAPORATIVE FILM COOLING OF NOZZLE THROAT SECTIONS OF THE ROSEMOUNT AERONAUTICAL LABORATORIES’HYPERSONIC FACILITY

摘要

A gasfired storage heater to heat the supply air for the 12 inch x 12 inch hypersonic wind tunnel at Rosemount Aeronautical Laboratories was designed, manufactured, and installed. Preliminary, firing tests have been conducted with this heater.nAn experimental investigation on evaporative film cooling of hyper¬sonic nozzle throat sections was conducted in the 12 inch x 12 inch hypersonic wind tunnel of the Rosemount Aeronautical Laboratories. Cool¬ant (water) was injected through a thin strip pf porous metal located upstream of the throat where the average Mach number was 0.08. The ob¬ject of this investigation was to determine the influence of evaporative film cooling on the nozzle flow. Two configurations have been investi¬gated with 15° and 30° expansion angle.