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Aeronautical Facilities Assessing the National Plan for Aeronautical Ground Test Facilities (1994) / Chapter Skim
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Pages 65-69

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From page 65...
... . For ground tests, wind tunnel free stream velocity is used to approximate vehicle speed.
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From page 66...
... Some wind tunnels use nitrogen, helium, freon, or sulfur-hexafluoride (SF6) as test gases.
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From page 67...
... The safety precautions needed with test gases that are corrosive or otherwise dangerous also reduce productivity. Because of these factors, gases other than air are not currently a practical alternative for large-scale development wind tunnels.
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Key Terms

  • wind tunnels
  • wind tunnel
  • ground test
  • flight reynolds
  • laminar flow

  • development testing
  • tunnel pressure
  • test data
  • test gas
  • development wind

  • speed regimes
  • tunnel testing
  • development facilities
  • tunnel tests
  • gas density


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