Facilities | Wind Tunnel

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