Subsonic Wind Tunnel

TECHNICAL SPECIFICATION:
Test section: 30cm*30cm* 80cm
Material of construction: m.s powder coated or teak wood.
Air flow velocity: 3 – 30 m/sec
Entry section: rectangle section setting chamber 0.9m*0.9m of 0.9m length width 1.2m*1.2m*0.15m bell mouth entry and honey comb structure followed by three (3) numbers of nylon mesh
Contraction: 9:1
Diffuser transition: 0.5m length and having a transition duct from square:
0.3m*0.3m to 0.7m circular diameter. The included angle of the diffuser will be such that it
prevents flow separation.
Fan: axial fan 0.7m dia (aluminum casting)
Motor: ac motor capacity 5hp @1440 rpm and VFD controller
Support frame: steel channel section and angle fabricated
Ambient temperature: 25 degree Celsius
Size @ bell mouth entry: 1.2m* 1.2m square
Control voltage: 230v, 50 Hz
Weight: 1100kgs approx.
TUNNEL LENGTH: 6m approx
MODELS: Circular Cylinder, Aero foil model, Flat plate held normal to the flow with sufficient
tapings to suit pressure distribution and supplied along with a protractor (0 – 380 deg.)
STRAIN GAUGE BALANCE: Precision one component balances for foot mounted / side wall
mounted system for wind tunnel studies. Drag, Lift force and Pitch.
Instrument comprises 3 independent calibrated digital display units to display forces directly
using the one component strain gauge balance.
MULTI TUBE MANOMETER: A 45 deg. adjustable infliation consisting of 11 tubes with
accuracy ± 5% minimum. The multi tube manometer provided will be housed neatly covered
frame suitably mounted on iron stand with tilting arrangement.
U Tube Manometer: 0.6 mtr length scale with glass tube
Pitot Static Tube: PROVIDED.
RPM INDICATOR: DIGITAL INDICATOR AND SENSOR