Item Description

­­­­ Features

• Open wind tunnel for a variety of aerodynamic experiments
• Homogeneous flow through the flow straightener and special nozzle contour
• Transparent measuring section
• Comprehensive selection of optional instrumentation, models and ancillaries
• ‘Sci-Cal’ High Speed Data Acquisition System for computer control of wind tunnel & measurement of parameters like Pressure distribution, Lift & Drag Forces, Velocity & Angle of attack.

A wind tunnel is a duct through which air is either blown or pulled out to simulate air flow over objects. The model of the object to be tested, called the prototype, is placed in the test section of the wind tunnel and the pressures, forces and moments experienced by the model at various wind speeds and in different orientation with reference to the wind are measured using special transducers. The results of wind tunnel measurements can be utilized to generate the design data for the prototype. Wind tunnels are useful research and educational tools for students to study problems related to several areas including fluid mechanics and aerodynamics. Subsonic wind tunnels are employed for teaching and research in aeronautical, mechanical, automobile, civil, architectural, environmental and marine engineering departments of educational institutions.

The Sci-tech Open Wind Tunnel – Subsonic Model AT 003 setup is an open wind tunnel used to demonstrate and measure the aerodynamic properties of various models. For this purpose, air is drawn in from the environment and accelerated. The air flows around a model, such as an aerofoil, in a measuring section. The air is then decelerated in a diffuser and pumped back into the open by a fan. The carefully designed nozzle and a flow straightener ensure a uniform velocity distribution with little turbulence in the closed measuring section. The flow cross section of the measuring section is square. The built-in axial fan and a variable-speed drive is characterised by an energy-efficient operation at high efficiency. Air velocities of up to 30 m/s can be reached in this open wind tunnel. The trainer is equipped with an electronic two-component force sensor. Lift and drag are detected and displayed digitally. The air velocity in the measuring section is displayed on the inclined tube manometer. Extensive accessories allow a variety of experiments, for example lift measurements, pressure distributions, boundary layer analysis or visualization of streamlines.

By using the optional data acquisition system has been developed specifically to support the analysis of experiments with the wind tunnel. Data Acquisition System consists of an interface module for sensors used with Subsonic Wind Tunnel. The system supports experiments such as measurement of lift and drag on drag bodies, pressure distribution on an aerofoil or a cylinder. Therefore, depending on the experiments, pressure sensors, angle sensors and the electronic displacement measurement and the three-component force sensor can be connected to the interface module.
Velocity, pressure, angle of attack or displacement and lift and drag forces are transmitted via USB directly to an integrated PC where they can be analyzed using the ‘Sci-Cal’ software.

Detailed Operation & Maintenance Manual is provided along with the trainer.