First of all, the concept.

Electric or not, for sure electric sailplanes have many vantages, the main one is freedom.

Has in São Paulo, Brazil we do not have space enough; the electric gliders can fly almost anywhere.

A big negative point is the batteries, Esc and all stuff, including of course the engine.

At windy cities like São Paulo, a thin airfoil is adequate, but here we have a big problem. What airfoil?
Selig family looks nice and MH also. I have made many design using S4083, but for this new model, I am thinking is use MH32, just for kicks.

Wing design platform, the best I ever use it was the Frigate platform, I don’t know way, but this platform inspire me the pure flight sensation.

I consider this platform very complicated to build, mainly because I don’t like balsa sheet covering around the wing. In fact I do prefer false ribs to avoid covering sag, and on a frigate wing this cost lots of work.

Spars, that’s a real problem. I try to made carbon fiber spars, but the black dust, I feel that is pure poison, mainly for a guy like me that was recent cured of a cancer on kidney. Exist a big suspect that carbon fiber can cause cancer, just like asbestos fiber.

So, I got to go back to old spruce, on my model spars.

Ok, I will try a Frigate wing platform, and a MH 32 airfoil.

And about the fuselage?

Again carbon Fiber for the boom?-I think that a rolled balsa tube can do this job very well, and this model is only a prototype, so, the pod...Continue Reading