Actually what I've seen have not been completely symmetrical 2 axis, but however thickest point is quite near at the center. Look how Denisesewa's mast profile has changed to that direction. For my eye your mast hydrofoil looks a bit too blunt at front area. But if you have finished your mast its ok, no doubt it works.NorCalNomad wrote:You must not have seen too many mast as a 2 axis symmetrical foil shape isn't as efficient as say a symmetrical naca shape. I have yet to see a carbon mast with a 2axis symmetrical foil.
I am not sure that Alu vs. carbon stiffness in DIY practice. Some aluminium alloys are very stiff, when heat treated etc., in every direction. Laminating on male mold (wooden core, foam core etc) doesn't add stiffness much, because the surface takes most of the loads. That is why foam core is at all reasonable.NorCalNomad wrote:It's pretty easy to make a laminated structure far stiffer than an alum. one as long as you know some basics of your forces, lamination, and layup processes. Should even be not that hard with a male mold that also adds stiffness to your part.
Let me do a quote.. This way you should get a notificationNorCalNomad wrote:Updated photos and words about putting in my inserts, attaching the fuselage to the mast, and starting to laminate the wings.
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