Closed-circuit wind tunnel KRG

aeronauticalmodel support

THE CRYOGENIC ROHR WIND TUNNEL (KRG) IN GÖTTINGEN IS A RESEARCH AND DEVELOPMENT FACILITY FOR AERODYNAMIC EXPERIMENTS. Intermittent, blow-down wind tunnel of the Ludwieg tube concept, pressurized by vaporized liquid nitrogen Main Features TEST SECTION 0.4 m x 0.35 m test section with adaptive upper and lower walls Mach control by adjustable sonic throat valve OPERATING RANGE Re0.1√(S) < 15 x 106 Run time < 1 s Remotely controlled 2D support Remotely controlled y-z traversing system used as model support AUXILIARY SYSTEMS Remotely controlled y-z traversing system for probe positioning (pressure rake) Typical tests Tests with flow control devices (vortex generators, suction, blowing, trailing edge devices) on 2D airfoils, helicopter blades, flat plates Fundamental research of fluid dynamic phenomena and effects influenced by Reynolds number (spheres, cylinders, blunted or slender bodies, etc.) Model deformation measurements Air data system and probe calibration