SUBSONIC WIND TUNNEL 450mm

Air passes into the wind tunnel through a honeycomb flow straightener and a grille. It then passes into an aerodynamically designed effuser (cone) that accelerates the air in a linear manner before it moves through the working section. Finally, it passes through a diffuser, then into the variable speed axial fan. The grille protects the fan from damage by loose objects. The air leaves the fan, passes through a silencer unit and then back out to atmosphere.

The speed of the axial fan (and therefore the air velocity in the working section) is controlled by an electronic drive control in the separate On/Off unit mounted on the tunnel’s associated instrument frame along with other ancillaries.

Working Section:

The working section is of a square section with an acrylic roof and floor. The sides are full length acrylic panels and can be removed. The whole unit is supported in an aluminium framework. Each side panel has a holder to support wind tunnel models. On the top of the working section are two Pitot devices and a wall tapping to measure the static pressure upstream and downstream of the working section.

Included with the wind tunnel:

• Three-Component Balance (AF1450T)
  The Three-Component Balance measures lift, drag and pitching moment exerted on the model.

• Balance angle Feedback Unit (AFA4) (Included with AF1450T)
  Measures the angular position of models mounted on the balance in the wind tunnel.

• NACA 0012 Aerofoil with Tappings (AF1450B)
  A 150 mm chord 450 mm span NACA0012 aerofoil with pressure tappings.

• Dual differential Pressure Display (DP6)
  Measures and displays pressures with respect to the atmosphere or differential pressures.

• 32-Way Pressure Display Unit (AFA6)
  Measures and displays up to 32 different pressures from models, Pitot-static tubes and other measuring instruments fitted to the wind tunnel.

• Pitot Static Traverse x2 (AF1450x)
  Two traversing Pitot-static tube with electronic position measurement for use with TecQuipment’s Subsonic Wind Tunnels.

• Protractor
  For assisting with setting up models and rotating them during experiments.

• Model holder
  To hold models when the three component balance is not used. Also for use with the user’s own models.

• Versatile Data Acquisition System (VDAS-F)
  A frame mounting versatile data acquisition system (VDAS®) to allow computer-based data capture.

Optional Extras include:

• Multi-Tube manometer (AFA1)
  A tilting 36-tube manometer

• Smoke Generator (AFA11)
  To assist with visualising air flow