Culleningus
Well-Known Member
Lets say I use 'angle' instead of tubing for longerons.
How should this section be bent without over-stressing?
Would 'mild steel' be more maleable than something harder, lighter, heat-treated, or hardened?
My other post (Junkers tube-ends) concerned an idea I had to skin a fus. made from angle. And how to lay up a suitably stiff & lightweight grp skin over such with sufficient skin/metal bondage to make this idea legitimate (so that the metal doesn't buckle)? A 45deg lay up would effectively act the same way as cross bracing to help lock the angles at the intersections.
Would a flush rivett tear through the hole at these intersections? Bolted construction might raise the total weight too much.
If welded this is not a problem.
Dave
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