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Accurate Automation Corporation |
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Contact Us 7001 Shallowford Road |
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General Description: AAC operates a supersonic-hypersonic wind tunnel consisting of high-pressure storage bottles, electrical heater, settling chamber, open-jet test section, diffuser and deflector/silencer. High pressure bottles are used to bring high-pressure storage tanks up to the required stagnation pressure,115-150 atm depending on the Mach number (Mach 2, 3, 4, 5, 6, and 7). For Mach 5-7 operation the heater is required to prevent liquefaction of the gas during operation. The heater has a water cooled jacket to prevent damage from prolonged use. A pressure transducer is located inside the settling chamber. The wind tunnel can presently operate in blow-down mode for 2.5 seconds reaching steady state for 1.5 seconds at Mach 2 and the steady state time varies depending on the Mach number. Test models used for the tunnel are normally 200-300 mm long and 20-40 mm wide with zero angle of attack. The deflector/silencer decreases the jet velocity and noise. |
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Capabilities: The facility is designed for aerodynamic evaluations: · pressure distributions · shock visualization using a shadowgraph Practical Use: The tunnel has been used to investigate shock wave modification using plasma on cone models, material performance characterization and hypersonic investigations. Currently the AAC wind tunnel is being used in support of NavalSurfaceWeaponCenter, NASA Marshall, NASA Ames, and NASA Langley.
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