The Cobra
A nice, speedy flyer.
Please Pass the Paper!
Get a piece of A4 paper, and fold it lengthwise in half. Unfold. Fold it widthways in half. Unfold. Fold the top to the last fold, making a quarter length fold. Unfold.
Follow the Images
Fold the top left corner to the middle fold, through the quarter/lengthwise fold. Then fold back from the centre crease. Fold the top right corner to where the top left corner is now. Fold that back from the centre crease, making a diamond on the nose.
Forming the Aerofoil
Fold the corners of the diamond to the tip. Then fold the wing flaps under themselves, as in the pictures.
The Nose
Fold the two loose flaps on the nose down, and then crunch them into quadrilateral shapes like in the picture.
Wing
Fold the wing to roughly the the same shape as in the images, and tape down all loose flaps. Done! Test fly and trim if needed.