Canon EOS 5D Mark II
ƒ/5
27 mm
1/800
400

Because the wind tunnel needs to be smooth on the inside, all the supporting structure in on the outside.

The upper tapered part feeds into the 40×80 Test Section, three stories off the ground. Air enters from the larger chamber on the left.

Entry photos below…

3 responses to “Exoskelton”

  1. The entry…
    IMG_7566
    Due to WWII materiel shortages, this blue building, which houses the test section, is sheathed in a corrugated material made from cardboard, cement, and asbestos.

    Through the door, and the test section looms overhead:
    IMG_7570

    A display and model of the huge fans:
    IMG_7582

    A cross-sectional model of the test section, showing how the roof opens overhead for lowering aircraft for testing:
    IMG_7579

    (short video of the echoes within).

  2. Computer Simulation has made the 40×80 all but extinct, any remaining use cases?

  3. Good question… with CFD, many of these are victims of Moore’s Law. In NASA’s recent celebration around this facility, they emphasize the 80×120 branch much more than the 40×80. I only noticed mention of testing a Wright Bro plane in ’99. Very old skool. =)

    When were were in the staging area we saw the test rig for the most recent project, and it is pretty contemporary – the HIAD inflatable reentry heat shield that was flight tested in 2012.

    By the way, the Google Maps view of this wind-tunnel is remarkably detailed, probably from aircraft imagery.

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