The complete starter set includes Subsonic Wind Tunnel, the Basic Lift and Drag Balance and the Three-dimensional Drag Models – all parts needed for experiments in aerodynamic drag. 

Air enters the tunnel through an aerodynamically designed effuse (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. 

This compact wind tunnel provides accurate results and is suitable for undergraduate study and research projects. ShouldShine offers a range of additional and optional models and instrumentation to extend the experiments.

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. They fit upstream and downstream of any models and connect to the manometers of the instrumentation unit (or other optional instruments) to show pressure. The working section of the tunnel is a square section with a clear roof, sides and floor. The sides are removable. Two traversing probes fit on the working section. One is a Pitot-static tube and the other a standard Pitot tube. 

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

The Basic Lift and Drag Balance

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. The balance also works with other optional models. A simple-to-fit balance that mounts on the side of the wind tunnel working section. 

The Three-dimensional Drag Models

The models fit in the wind tunnel working section, held by the balance to allow students to see how shape affects aerodynamic drag. A set of models, each with a different shape featuring the same frontal area for direct comparisons. The models include ‘classic’ aerodynamic test shapes including a smooth sphere, a dimpled sphere and a streamline shape.

Experiments

This Starter Set includes parts for experiments in three dimensional drag due to different body shapes and surface dimples.