SUBSONIC WIND TUNNEL 305 mm

Air enters the tunnel through an aerodynamically designed effuser (cone) that accelerates the air linearly. It then enters the working section and passes through a grill before moving through a diffuser and then to a variable-speed axial fan. The grill protects the fan from damage by loose objects. The air leaves the fan, passes through a silencer unit and then back out to atmosphere.

A separate control and instrumentation unit controls the speed of the axial fan (and the air velocity in the working section). The control and instrumentation unit also includes manometers and electrical outlets to supply electrical power to other optional instruments.

A metal frame supports the wind tunnel. The frame includes lockable castors for convenient mobility.

Working Section
The working section of the tunnel is a square section with a clear roof, sides and floor. The sides are removable. The floor and each side panel has a special position to support the optional wind tunnel models. Supplied with the wind tunnel are a protractor and a model holder to support and accurately adjust the angle of any models fitted.

Two traversing probes fit on the working section. One is a Pitot-static tube and the other a standard Pitot tube. They fit upstream and downstream of any models and connect to the manometers of the instrumentation unit (or other optional instruments) to show pressure.

Included with the Wind Tunnel
Basic Lift and Drag Balance (AF1300z)
This balance holds the models in the working section and measures the lift and drag forces on the models, created by the air moving past them.

Three-dimensional Drag Models (AF1300j)
A set of models, each with a different shape but the same frontal area for direct comparisons.

Minimum Instruments Required

It is possible to complete all AF1300 experiments without using VDAS®. However there is a minimum additional instrumentation requirement for some experiments.

All TecQuipment electronic instruments e.g. the 32-Way Pressure Display Unit (AFA6) have visual displays from which data can be transcribed.

Other instruments e.g. the Multitube Manometer (AFA1) are read manually and the data transcribed.