INCAS Subsonic Wind Tunnel

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Subsonic Wind Tunnel

• Atmospheric pressure, continuous type facility
• Maximum speed : 110 m/s
• 2.5m x 2.0m x 4m test section
• Usual Reynolds number up to 1.5 million.

Equipment:

Traditional closed circuit type
Solid walls test section
External 6 component pyramidal type balance
♦ Maximum normal load : 10.000 N (Lift)
♦ Accuracy : 0.02 % full scale, all axes
♦ Resolution : 0.002 % full scale, all axes
♦ Pitch motion : -25....+45 deg. @ 1...5 deg/sec
♦ Yaw motion : +/- 180 deg. @ 0.5...6 deg/sec
• Standard pressure acquisition systems
♦ Digital scanning system: 256 ports
♦ Dynamic pressure capability: 56 kulites
♦ Boundary layers pressure measurements
• New data acquisition technologies
♦ Hot film/wire measurements
♦ IR camera
♦ PIV system
♦ 3D dynamic deformation – fast cameras
• Laser visualization systems
• CTS system – open/closed loop operation
• Aeroacoustics and airframe noise evaluation
♦ 72 microphone matrix system
♦ Beamforming technology
♦ Cross-corelation with dynamic pressure/kulites
 

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airframe_noise1 airframe_noise2 airframe_noise3
Airframe noise evaluation – side edge fence concept

Instrumentation

Force Measurements

Force and moment measurements (up to six components) are made using the external pyramidal type six - component balance built by the British company TEM .

The capacities of the balance are shown below: