Structural analysis and design of airplanes (1920)
United States. Army. Air Corps · [Washington] · leaf 154
/?-/? … n sd 3-3Fig. 88. Built-up Spar of Box Type 135 Miscellaneous Design Art. 103 box construction. It is believed that greatest strength will be secured bvhaving the grain of the face plies run parallel to one set of diagonals, andthat of the core, parallel to the other diagonals. As this type of…
Airplanes
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