The transonic induction driven wind-tunnel T2, with a testing section of 38 x 40 square cm pressurized up to 6 bars was transformed into a cryogenic system in 1981. The airflow cooling is provided by a parietal injection of liquid nitrogen in the wind-tunnel. An internal insulation preserves most of the tunnel elements and works with runs which last until one minute. The method used for the run starting and the automatic control of the airflow parameters is described. A simplified process model allows a mini-computer centralizing all useful data to generate in real time the commands to initate and stabilize the desired temperature and pressure values. The results defining the installation performances and airflow qualities are presented.
Studies on the Cryogenic Induction Driven Wind-Tunnel T2
1982
19 pages
Report
No indication
English
Test Facilities & Equipment , Air flow , Automatic control , Cryogenic wind tunnels , Liquid nitrogen , Minicomputers , Wind tunnel tests , Data acquisition , Flow velocity , Mach number , Performance tests , Pressure distribution , Temperature distribution , Two dimensional flow , Foreign technology
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