Supersonic Wind Tunnel (Intermittent)
Categories: Industrial Process LaboratoryDescriptionAn intermittent operation, induction-type supersonic wind tunnel for investigations into subsonic and supersonic flow. This includes tests on the flow around two-dimensional models at subso...
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Description
Description
An intermittent operation, induction-type supersonic wind tunnel for investigations into subsonic and supersonic flow. This includes tests on the flow around two-dimensional models at subsonic and supersonic air speeds. A compressed air supply (available separately) induces a flow in the working section of the wind tunnel. This gives a less turbulent and more stable flow for accurate results and comparison with theory. The essential compressed air supply includes filters and air dryers to give the dust-free and dry air source needed for good results. Students use a delivery valve to allow compressed air to enter the wind tunnel. The wind tunnel includes two analogue pressure gauges. One measures the compressed air pressure available from the supply (for reference); the other measures the pressure delivered to the wind tunnel and includes an electronic transducer that connects to optional Versatile Data Acquisition System (VDAS®) to record the pressure. The working section of the wind tunnel is a convergent divergent nozzle with a removable top part (‘liner’). The shape of the liner controls the maximum air velocity at the divergent part of the working section. Included are three different liners. High optical-quality glass windows (‘portals’) are at each side of the divergent part of the working section. The portals allow students to use the optional Schlieren Apparatus (available separately). This allows display and recording of images of pressure waves around two-dimensional models. Included is a set of two-dimensional models. These mount between the portals inside the working section. Students can adjust the angle of the models. An encoder electronically measures the model angle. Spaced at precise intervals along the working section of the wind tunnel are pressure tappings. Two extra tappings connect to one of the models when in use. A 32-way pressure display (included) connects to all the pressure tappings. It displays the pressures and transmits them to VDAS® for instant recording and calculations of pressure ratios and Mach numbers. Included is a bench-mounting instrument frame that holds and provides power for the electronic instruments and the VDAS® interface unit. The instrument frame connects to a suitable electrical supply. VDAS® allows accurate real-time data capture, monitoring, display, calculation and charting of all the important readings on a suitable computer (computer not included).
Learning Outcomes
Pressure distribution along a convergent/ divergent (Laval) nozzle with subsonic and supersonic air flow
Comparison of theoretical and actual pressure distributions
Comparison of actual and theoretical area ratios of a nozzle at supersonic air velocities (Mach numbers)
Pressures around a two-dimensional model in subsonic and supersonic flow conditions, at different angles of incidence
Lift coefficients for aerodynamic models in supersonic flow
Shock waves and expansion patterns around a two dimensional model in supersonic fl ow conditions (when used with the optional Schlieren. Apparatus)
Specifications
ATICO is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Dimensions and weight (wind tunnel):
Nett: 2000 mm high x 3150 mm long x 805 mm wide and
236 kg
Packed: Approximately 5.9 m3 and 300 kg
Dimension and weight ( instrument frame without instruments):
Nett: 1260 mm long x 840 mm high x 510 mm wide and
22 kg
Packed: Approximately 0.78 m3 and 30 kg
Nominal nett dimensions :
2120 mm high x 4500 mm x 1000 mm
Working Section
Full Section:
25.4mm wide, 101.6mm high and 647mm long
Viewing Window:
106.1mm high and 106.1mm wide
Air speeds:
Interchangeable liners are provided to give nominal working section airspeeds of:
• Mach 1.8
• Mach 1.4
• Subsonic
Models:
• 5-degree single wedge
• 7-degree double wedge
• 10-degree double wedge
• 10-degree double wedge with two pressure tappings.
Operating Conditions
Operating Enviroment:
Laboratory
Storage Temprature Range :
–25°C to +55°C (when packed for transport)
Operating Temprature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
quick overview :
Description
An intermittent operation, induction-type supersonic wind tunnel for investigations into subsonic and supersonic flow. This includes tests on the flow around two-dimensional models at subsonic and supersonic air speeds. A compressed air supply (available separately) induces a flow in the working section of the wind tunnel. This gives a less turbulent and more stable flow for accurate results and comparison with theory. The essential compressed air supply includes filters and air dryers to give the dust-free and dry air source needed for good results. Students use a delivery valve to allow compressed air to enter the wind tunnel. The wind tunnel includes two analogue pressure gauges. One measures the compressed air pressure available from the supply (for reference); the other measures the pressure delivered to the wind tunnel and includes an electronic transducer that connects to optional Versatile Data Acquisition System (VDAS®) to record the pressure. The working section of the wind tunnel is a convergent divergent nozzle with a removable top part (‘liner’). The shape of the liner controls the maximum air velocity at the divergent part of the working section. Included are three different liners. High optical-quality glass windows (‘portals’) are at each side of the divergent part of the working section. The portals allow students to use the optional Schlieren Apparatus (available separately). This allows display and recording of images of pressure waves around two-dimensional models. Included is a set of two-dimensional models. These mount between the portals inside the working section. Students can adjust the angle of the models. An encoder electronically measures the model angle. Spaced at precise intervals along the working section of the wind tunnel are pressure tappings. Two extra tappings connect to one of the models when in use. A 32-way pressure display (included) connects to all the pressure tappings. It displays the pressures and transmits them to VDAS® for instant recording and calculations of pressure ratios and Mach numbers. Included is a bench-mounting instrument frame that holds and provides power for the electronic instruments and the VDAS® interface unit. The instrument frame connects to a suitable electrical supply. VDAS® allows accurate real-time data capture, monitoring, display, calculation and charting of all the important readings on a suitable computer (computer not included).
Learning Outcomes
Pressure distribution along a convergent/ divergent (Laval) nozzle with subsonic and supersonic air flow
Comparison of theoretical and actual pressure distributions
Comparison of actual and theoretical area ratios of a nozzle at supersonic air velocities (Mach numbers)
Pressures around a two-dimensional model in subsonic and supersonic flow conditions, at different angles of incidence
Lift coefficients for aerodynamic models in supersonic flow
Shock waves and expansion patterns around a two dimensional model in supersonic fl ow conditions (when used with the optional Schlieren. Apparatus)
Specifications
ATICO is committed to a programme of continuous improvement; hence we reserve the right to alter the design and product specification without prior notice.
Dimensions and weight (wind tunnel):
Nett: 2000 mm high x 3150 mm long x 805 mm wide and
236 kg
Packed: Approximately 5.9 m3 and 300 kg
Dimension and weight ( instrument frame without instruments):
Nett: 1260 mm long x 840 mm high x 510 mm wide and
22 kg
Packed: Approximately 0.78 m3 and 30 kg
Nominal nett dimensions :
2120 mm high x 4500 mm x 1000 mm
Working Section
Full Section:
25.4mm wide, 101.6mm high and 647mm long
Viewing Window:
106.1mm high and 106.1mm wide
Air speeds:
Interchangeable liners are provided to give nominal working section airspeeds of:
• Mach 1.8
• Mach 1.4
• Subsonic
Models:
• 5-degree single wedge
• 7-degree double wedge
• 10-degree double wedge
• 10-degree double wedge with two pressure tappings.
Operating Conditions
Operating Enviroment:
Laboratory
Storage Temprature Range :
–25°C to +55°C (when packed for transport)
Operating Temprature range:
+5°C to +40°C
Operating relative humidity range:
80% at temperatures < 31°C decreasing linearly to 50% at 40°C
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