No problem, and actually a good question.Do the wings on the helicopter need to have airfoils like the wing of a wright stuff plane, or simply flat with a twist? I guess I am not sure how it generates its lift . . . . simply by moving the air?
Yeah!! description and specific questions. That we can help.<SNIP>
Not including the propeller/rotter, our helicopter is about 15 cm tall. It is a triangular prism in shape, with each side of the triangle measuring 7 cm. I built some supports in the shape of X's on each side to stabilize it and keep it from breaking. We have a piece of paper covering the upper end, and that is where our rotter is. It has two blades, each 15 cm long, completely flat, and tilted to about 20 degrees. I'm not sure what my partner is planning, but we will attach the rubber band to the bottom of the helicopter, and the other end to the bottom of the rotter, and spin the blades to wind it up. All together, our helicopter weighs about 8 grams (a little heavy, I know).
Any thoughts? Too heavy? More blades? Any input is greatly appreciated. Thanks!
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