Closed Circuit Subsonic Wind Tunnels

• The wind-tunnels are equipped with stilling chambers with a honeycomb and grids of varying mesh sizes.


• The contractions are designed to give an optimum velocity distribution in the test section.


• The test sections are generally
  constructed in plexiglas for full flow visualization, and to permit the
  use of laser anemometry systems.


• Models, aerofoils, balances and probes
  can be fitted to the test sections, together with single or multi-axis
  probe traversing systems.


• The tunnel circuit also includes a
  diffuser and round to square transition sections upstream and downstream
  of the axial fan which is connected to the main structure through
  flexible sleeves. The corner sections are fitted with guide vanes to
  avoid separation and to maintain a satisfactory pressure distribution
  irrespective of changes in flow direction.


• The fan is directly coupled to a
  variable speed electric motor with a frequency controller, to give a
  wide range of velocities in the test section. The motor speed can be
  varied by remote control or by an analogue signal.


• The wind-tunnel is dimensioned for a
  plexiglas test section of 300 x 300 mm, and length 700 mm. An
  aerodynamic balance and models can be mounted on a vertical panel of the
  test section. Probes, including pitot tubes and hot wires, can be
  positioned in the air stream through passages in the top panel of the
  test section.
  
  The wind-tunnel is fitted with an air-water heat exchanger, connected to
  a mains water supply, to maintain a constant air temperature during
  prolonged operation of the tunnel To allow easy access to the test
  section and models, a raised floor section and a working surface can be
  supplied as options if required.


• The plexiglas test section dimensions
  are 300 x 200 mm, and the length 600 mm. Aerofoils and other models,
  together with a balance, can be mounted through the top panel. Passages
  for probes (pitot tubes, hot wires,…) are located on the front side
  panel.


• The wind-tunnel can also operate in an
  open jet configuration. The closed circuit test section is removed and
  replaced by a profiled entry section mounted on the diffuser downstream
  flanges. The air speed in the open section is reduced by 5 m/s in this
  configuration.


• The wind-tunnel is of compact design. It can be used for fundamental experiments in aerodynamics.


• The wind-tunnel can be supplied, on
  option, with full instrumentation (pressure transducers, temperature
  probes, etc) and transparent tunnel sections, to investigate wind-tunnel
  operating characteristics.


• An optional intercooler can be supplied to maintain constant air temperature conditions.

Technical specifications

• Overall dimensions: 4420 x 1420 x 2100 mm.


• Test section dimensions: section : 300 x 300 mm, length: 700 mm.


• Contraction ratio: 8.


• Velocity range: 2 to 40 m/s.


• Uniform velocity distribution in the test section.


• Turbulence level: < 0.5 % at 40 m/s.


• Power requirement: 7,5 kW.


• Weight (approx.): 450 kg.


• Overall dimensions: 3000 x 700 x 1500 mm.


• Test section dimensions: section : 300 x 200 mm, length : 600 mm.


• Contraction ratio: 4.


• Velocity range: 2 to 40 m/s.


• Uniform velocity distribution in the test section


• Turbulence level: < 0.8 % at 40 m/s.


• Power requirement: 3 kW.


• Weight (approx.): 250 kg

Essential requirements

• Power supply: 380/440 V 3 phases 50 Hz (other voltages on request).


• Main water supply. Information on flow rates and pressures on request

Shipping & Installation

We dispatch Closed Circuit Subsonic Wind Tunnels from our Ambala Cantt manufacturing facility to destinations across 90+ countries. All shipments include comprehensive documentation, technical manuals, and a Lab Instructor Guide.

• Packaging: Export-grade wooden crate with anti-corrosion lining
• Lead Time: 4-6 weeks for standard orders, customised lead time for bulk tenders
• Installation: On-site installation and commissioning by our certified engineers (optional)
• Training: Hands-on training for instructors and lab technicians provided
• Warranty: 12-month manufacturer warranty against material and workmanship defects