Wondering what design considerations there are for noise when making a tail rotor.
I see that speed is a big factor in this article on tail rotor design, but isn't there something with the airfoil or tip shape?
Wondering if / how a pilot can coordinate a turn visually, without a slip ball. I'm thinking you could do it without a slip ball by feel - if you're being pulled left or right in your seat, but I don't understand if / how this could be done visually. I thought I read an article saying it could...
