My first quadrotor frame design is simple, sturdy, reliable, and a bit ugly. I have made no attempt to make it cute, flashy, or visually desirable in any way. If and when I determine that the structural design performs well, I’ll use some better tools to make a more flashy design. Until then, I’ll be flying on my raw cut aluminum frame.
My basic design is two 24 inch(610 mm) X 1/2 inch(13 mm) X 1/2 inch(13 mm) square aluminum arms. I knotched both in the center so that they can cross each other. There are two 5 1/4 inch(133 mm) alumimum plates holding everything strong and square. The frame is very strong, rigid, and relatively low weight.