Modernisierung des Hochgeschwindigkeits-Windkanals fuer Kaltgastests an Raketenduesenmodellen mit Einfuehrungsmessungen

Moisture condensating from the expanding gas in the wind tunnel makes it impossible to compute the gas-dynamical processes by adiabatic equations. The condensation is avoided using a zeolite of the Fanjasite type as a drying agent. In addition, a new heater had to be installed to realize the temperature required for the regeneration of the drying agent. Pressure distribution measurements along a flat plug model proved the efficiency of the modernization measure. Condensation effects are subdued and the Mach number is increased. (WEN)SIGLEAvailable from TIB Hannover: F97B662+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany); Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA) GmbH, Bonn (Germany)DEGerman