Open Wind Tunnel - Subsonic Model AT 003
Open Wind Tunnel – Subsonic Model AT 003
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 ‘Sci-Cal’ 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.
| Size: | 450cm x 90cm x 90cm (LxWxH) |
| Weight: | 435 kg |
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.
Technical Specifications
Specifications
- Dimensions (Assembled): L x W x H: 3m x 1 m x1.7 m
- Working section: 300 mm x 300 mm, and 600 mm long.
- Air velocity: 4.5m/s to 65+ m/s
- Turbulence Level: < 0.2%
- Fan: Axial Fan, 2 hp, 1440 / 2800 RPM
- Variable Speed Drive: For Fan Speed Control
- Honeycomb Flow Straightener: Expanded aluminium, more than 4” deep hexagonal cells
- Static Pressure Ring: Non-invasive access to test section static pressure used for air speed indication
- Test Section – integrated yaw table
- Visibility – top and side doors
- Diffuser – more than 6-deg included divergence angle
- Multi-nanometer – 24tubes, 0-35cm of water
- Model storage and display cabinet
- Air Flow Measurement by Pitot Tube & Manometer
- 16 Tube, Inclined Manometer (AF-02.01)
- Three Component Force Balance for Lift, Drag & Pitch Measurement with digital indicator
- Cylinder model for pressure measurement
- NACA 2412 Aerofoil for Drag Measurement
- NACA 0012 Aerofoil with Pressure Tapings
- Three Dimensional Drag Models
- 12 Chanel Electronic Manometer Bank
- Measures up to 12 different pressures from models
- All pressures are measured with respect to atmosphere
- Range 0-300 mm of H2O
- Angle Feedback Unit
- Pitot Traverse Mechanism
- ‘Sci-Cal’ Data Acquisition System and Software:
- USB Based Multi-Functional Data Acquisition Device
- 16 Analog inputs (16-bit, 250 kS/s)
- 2 Analog outputs (16-bit, 250 kS/s);
- 4 digital I/O
- Lab view based customized programmed software and Data processing:
LabVIEW based software with Graphical & Numerical displays for parameters measured by different sensors. The software enables user to control the air speed from computer. Following measured parameters are displayed on screen during experimentation –
- Air Velocity
- Pressure Distribution around different models
- Lift & Drag Forces
- Angle of Attack
- The software analyses experimental data & performs calculations.
- Experimental test results are displayed in tabular format along with relevant graphs.
- The measured parameters, test results can be exported in to Excel format or Printed using any printer connected to computer / laptop.
Standard Accessories Supplied
- 16 Tube, Inclined Manometer
- Two Component Force Balance for Lift and Drag Measurement with Digital Display
- Pitot Tube
- Digital Air Velocity Indicator
Experimental Modules Supplied
- Sting force/balance sensor
- Model positioning system
- Drag model set
- Smoke builder/generator
- Experiment module: a) Scale model of F-16 model b) pressure cylinder c) wing with slat and flaps d) pressure wing e) boundary layer plate and “mouse) f) wake “rake” g) yaw probe h) pilot static probe i) turbulence sphere
Experimental Capabilities
- Determine drag and lift coefficients for different models
- Pressure distribution when flowing around drag bodies
- Boundary layer analysis
- Investigation of flutter
- Wake measurement
- Flow past bluff and streamlined bodies with pressure and velocity observations in the wake
- Investigations into boundary layer development
- Pressure distribution around a cylinder
- Study of characteristics of models involving basic measurement of lift and drag forces
- Study of the characteristics of three-dimensional aerofoils involving measurement of lift & drag
- Data acquisition capable of monitoring: Force/Moment Balance output, pressures, model angle of attack, and temperature. Capable of setting and maintaining wind tunnel airspeed (dynamic pressure) regardless of model orientation.
Optional Accessories
- ‘Sci-Cal’ Data Acquisition System
- Three-Component Balance
- Angle Feedback Unit
- 16 Way Digital Pressure Display Unit
- Smoke Generator
- Drag Body Sphere Module AT003/06
- Drag Body Hemisphere Module AT003/07
- Drag Body Circular Disc Module AT003/08
- Drag Body Circular ring Module AT003/09
- Drag Body Square Plate Module AT003/10
- Drag Body Flag Module AT003/11
- Drag Body Cylinder Module AT003/12
- Drag Body Streamline Body Module AT003/13
- Drag Body Aero foil Module AT003/14
- Drag Body Paraboloid Module AT003/15
- Drag Body Concave Shape Module AT003/16
- Aerofoil spring Mounted Module AT003/1
- Aerofoil with Slat and Slot Flap Module AT003/18
- 150 mm Chord NACA0012 Aerofoils Module AT003/19
- 150 mm chord NACA2412 aerofoil with Variable Flap Module AT003/20
- Pressure Distribution on an Aero foil NACA 0015 Module AT003/21
- Pressure Distribution on a Cylinder Module AT003/22
- Boundary Layer Analysis with Pitot Tube Module AT003/23
- Bernoulli Model Module AT003/24
- 150 mm Chord NACA 0012 Aerofoil with Tappings Module AT003/25
- Pressure Distribution on an Aerofoil NACA 54118 Module AT003/26
- Pressure Distribution on an Aerofoil NACA 4415 Module AT003/27
- Wake Measurement Module AT003/28
- Pitot Tube Module AT003/29
- Pitot Tube Small Module AT003/30
- Pitot static tube Module AT003/31
- Tube for Static Pressure Module AT003/32
- Manometer Module AT003/33
- Fog Generator Module AT003/34
- Pressure distribution on a cylinder Module AT003/36
Model Number
AT 003
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