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  1. chuck1

    Pressure Box Test

    We are looking at replacing a metal fairing with a fiberglass laminate and the FAA wants us to do a "Pressure Box Test." I can't find any literature on it. Is it a static test or fatigue test? I assume that it is associated with the dynamic pressure at altitude but I don't know if it...
  2. chuck1

    Aluminum Bronze

    I need the compressive yield strength for C63020 nickel aluminum bronze bar in order to calculate bushing yield. Does anyone know where I can find this information? MIL-HDBK-5 and any of the websites give only tensile properties. Also, is there any other way to calculate bushing yield strength...
  3. chuck1

    Spin Dimpling

    Hawker Siddeley specifies spin dimpling for their fuselage skins. Does anyone know what this process entails? Also, would hot dimpling be an acceptable substitute? Thanks, Chuck
  4. chuck1

    S154 Steel Die Forging

    Does anyone know if there is a US equivalent for British S154 steel die forgings? All I can find is that it's classified as 57 ton 2-1/2% nickel-chromium-molybdenum steel. What I really need to know is its properties: Ftu and Fsu. Also, is it weldable? Thanks, Chuck

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