Shadow photograph of wind tunnel test results, showing air stream from a 30-degree cone head

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  Shadow photograph of wind tunnel test results, showing air stream from a 30-degree cone head model

  Manuscripts

  Shadow photograph of wind tunnel test results, showing air stream off 30 degree cone head model, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "Huntington Library."

  mssHUB 1044 (12)

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  Shadow photograph of wind tunnel test results, showing the air stream from a 30-degree cone head model

  Manuscripts

  Wind tunnel test results, showing air stream off 30 degree cone head model, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "Huntington Library."

  mssHUB 1044 (11)

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  Shadow photograph of wind tunnel test results, showing air stream from a cylindrical model

  Manuscripts

  Shadow photograph of wind tunnel test results, showing air stream off cylindrical model, and determining minimum, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "Huntington Library. APG"

  mssHUB 1044 (14)

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  Shadow photograph of wind tunnel test results, showing air stream from a cylindrical model

  Manuscripts

  Shadow photograph of wind tunnel test results, showing air stream off cylindrical model, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "Huntington Library."

  mssHUB 1044 (13)

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  Shadow photograph of air shock waves off a 37 mm shell, at the U.S. Army Ballistic Laboratory

  Manuscripts

  Shadow photograph of test results, showing air stream off 37 mm shell, Ballistics Research Laboratory. Note in the hand of Edwin Powell Hubble: "Shadow photo by spark (exp. @ 1/1,000,000 second), 37 mm shell velocity about 2500ft/sec. Note shock waves in air skin friction along sides turbulence in wake." Note in the hand of Grace (Burke) Hubble: "EPH Huntington Library."

  mssHUB 1044 (19)

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  Edwin Powell Hubble, Henry Stimson, General Harris, Colonel Eddy, R.W. Kent and 5 other unidentified men viewing the supersonic wind tunnel at the U.S. Army Ballistic Research Laboratory

  Manuscripts

  Edwin Powell Hubble, Henry Stimson, General Harris, Colonel Eddy, R.W. Kent and five (5) other unidentified men witnessing a test at the supersonic wind tunnel in the Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Henry Stimson, --at right, Gen. Harris, Col. Eddy, R.W. Kent. APG [Aberdeen Proving Grounds] --Supersonic Wind Tunnel. Huntington Library." Hubble is standing at the far left, with his back to the camera.

  mssHUB 1043 (7)