Fold a piece of paper in half lengthways, then unfold it.Fold each edge in so that the end at the front (top) touches the middle crease and the end at the back meets the corner of the paper.Now fold 1 cm of the front end in.Close-up.Repeat six more times, to make a total of seven folds.The folded edge of what will be the wing will ruffle up, but you can keep pushing it under the folds you are making, to stop it getting too bad.Now fold the paper in half …… so it looks like this.Fold one wing down around a line about 1.5 cm up from the main crease …… so it looks like this. Then repeat with the other wing.It should now look something like this.Now fold up the edge of each wing, along a line about 1 cm in at the back end and 0.5 cm in at the front end. The result should be that each wing is a rectangle with diagonal pieces standing vertically along the outside edge. (NOTE: the line I have drawn here is not quite right – it should be closer to the edge at the front.)Your plane should now look like this.Like this.Experiment with the angle of the wings – when they are pointing up like this, they make what is known as a dihedral angle. That makes the plane stable in the air – but too steep and there will not be enough lift, and the plane will fall too quickly.
