Wind Tunnel
Dimensions of the facility
Test Section
- Plenum Length = 13.30 m
- Jet Length = 8.00 m
- Width B = 9.60 m
- Height H = 4.20 m
- Balance reference center X/L = 0.46
Nozzle
- Jet frontal area An = 11 m2 (Semi-circular shape)
- Width Wn = 4.84 m
- Height Hn = 2.82 m
- Contraction ratio = 6.9:1
Drive system
-
Main Fan:
- DC Motor Power = 1.1 MW
- Fan Diameter = 4.88 m
- Number of Blades = 29
13 Fans:
- DC Motor Power (tot) = 2 MW
- Fan Diameter = 1.8 m
- Number of Blades = 13
Aerodynamic characteristics
- Max Wind Speed Vw = 70 m/s (250 Km/h)
- Velocity uniformity dV / Vw < ± 0.5 %
- Turbulence level = 0.3%
Mean flow angles:
- vertically a = 0.0°
- horizontally a = 0.0°
Max local flow angles:
- vertically a = ± 0.5°
- horizontally a = ± 0.5°
Boundary layer displacement thickness, at the balance center and V=140 Km/h:
- static floor d* = 11.2 mm
- moving floor d* = -0.1 mm
Aeroacoustic characteristics
Noise Level measured in the Test Section Plenum, out of the jet, at x=balance center:
- SPL (Aw) = 68 dB(A) at V = 100 Km/h
- SPL (Aw) = 78 dB(A) at V = 140 Km/h