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Recent content by JohnDAR

  1. JohnDAR

    ANC 3 Water loads for float planes.

    Russ, Nigel, I have a copy of the original "Military Handbook No. 5" dated 01 June 1959 ... interestingly, it does not refer to ANC-5. I also have a copy of ANC-18 "Design of Wood Aircraft Structures" dated June 1951 (with an introduction by the Wright brothers ... just...
  2. JohnDAR

    Dents

    Dents may be a problem by themselves but repairing them can introduce more problems. The issue with metallic structure - especially aluminum - is the effect of cold working the dent to 'straighten' it. Cold working can increase the temper and dramatically reduce the toughness. Even very old...
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