Closed-circuit wind tunnel KKK

aeronauticalmodel support

THE CRYOGENIC WIND TUNNEL (KKK) IN KÖLN IS A CRYOGENIC FACILITY FOR RESEARCH, DEVELOPMENT AND DATA SET MEASUREMENTS Type of wind tunnel Closed circuit, continuous, low-speed wind tunnel with a closed wall test section. Operation either at ambient temperature or cooled down by injection of liquid nitrogen. Main features OPERATING RANGE Re0.1√(S) < 9.5 x 106 Sword with integrated roll support Half-model and surface vehicle support with under-floor balance Half-model support with tangential blowing at synchronized turntables AUXILIARY SYSTEM Integrated optical traversing system Typical tests 2D airfoil tests with high-lift and flow control devices (flaps, slats, vortex generators, trailing edge devices) Wind rotor blades Half-model tests of transport aircraft in high-lift configurations Surface vehicles (trains, trucks) Probe calibration, function and reliability tests