Cryogenic Wind Tunnel/Quiet Nozzle

In the current transonic or supersonic wind tunnels, their Reynolds numbers and turbulence intensity are different from those in actual conditions. Therefore, there are problems such that turbulence transition and separation points are inconsistent between wind tunnel test results and actual test results. To solve these problems, we research and develop cryogenic wind tunnels where cooled airflows bring the Reynolds number in the measurement cone nearer to actual one, and supersonic quiet nozzles which can generate less turbulent airflows.