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The 9 X 7 SWT is a closed-return, variable-density tunnel with an asymmetric, sliding-block nozzle. It is one of two separate test sections powered by a common drive system. Interchangeability of models among the Unitary test sections allows testing across a wide range of conditions. Airflow is generated by an 11-stage, axial-flow compressor powered by four variable-speed, wound-rotor, induction motors.
9×7 SWT Characteristics
Speed: Mach 1.5 to 2.5
Reynolds Number: 0.90 – 5.6 x 106 per foot
Pressure: 4.4 to 27.0 lbs. per square inch
Temperature: 110 ± 20°F
Test Gas: Ambient atmosphere
Test Section Size: 7 feet high by 9 feet wide
Length: 14 feet
Circuit Length: 63 square feet
9-by 7-Foot Supersonic Wind Tunnel Fact Sheet
NASA Ames Windtunnels
Get further information about the 9’x7′ SWT and 11’x11′ TWT facilities at NASA Ames.
