Supersonic nozzle flow visualization procedure for examination of flow separation uses humidification of cold gas exit flow and monitoring cameras

摘要

A supersonic nozzle (10) flow visualization procedure drives (32) a low thermal conductivity cooled (56) nozzle with cold (18) gas so that air entering through the nozzle outlet is below the dew point and freezing point at the walls (60) and exit (40) and monitors (48, 50) ice build up through a transparent wall with contrasting background. An Independent claim is included for equipment using the procedure.