A sizable open-circuit suction subsonic wind tunnel with a working section of 450 mm by 450 mm and 1000 mm length. It provides a cost-eff ective balance between being able to carry out advanced aerodynamics study, while being less bulky than the AF1600.
Key Features
• A cost eff ective solution when compared to full-scale wind tunnels or airborne laboratories
• Operates at meaningful Reynolds numbers
• Safe, open-circuit suction design
• Package includes an aerofoil with tappings, a three-component balance, angle feedback, dual diff erential pressure display, a 32-way pressure display unit, 2 x Pitot static traverse, protractor, model holder and data acquisition (VDAS-F)
• High levels of safety
• Controls and instrumentation conveniently mount on a separate, free-standing frame
Description
Air passes into the wind tunnel through a honeycomb fl ow straightener and a grille. It then passes into an aerodynamically designed eff user (cone) that accelerates the air in a linear manner before it moves through the working section. Finally, it passes through a diff user, 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 fl oor. 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 diff erential pressures.
• 32-Way Pressure Display Unit (AFA6)
Measures and displays up to 32 diff erent pressures from models, Pitot-static tubes and other measuring instruments fi tted 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.
