CLICK PICTURE FOR PDF. The Flying Square is a design I came up with for a completely symmetrical aircraft (when viewed from above). It won't win any competitions for its flying abilities, but it is stable and does glide fairly nicely when given a gentle toss.
CLICK PICTURE FOR PDF. I've always loved flying wing model aircraft, and I made this paper airplane to explore this type of design in paper, using what I learned from radio controlled models. This model features a built in geometric twist in the wing, necessary for pitch stability. The swept back leading edge on the tip panels contribute to yaw stability, even without a vertical stabilizer. Gently release the model from head height, and it will glide smoothly and straight out in front of you.
CLICK PICTURE FOR PDF. Here's the second version of my flying wing. This one is a little simpler, flies a little better, and adds control surfaces. The centre panel is flatter increasing lift, and the aspect ratio is a little higher. The glide ratio improved visibly as a result of these minor tweeks. Try increasing the aspect ratio even further by using an 8.5"x14" piece of paper, and watch it really soar!