Origami Airplane
The most significant use of paper models in aircraft designs were by the Wright brothers between 1899 and 1903, the date of the first powered flight from Kitty-Hawk by the Wright Flyer. The Wrights used a wind tunnel to gain knowledge of the forces which could be used to control an aircraft in flight. They built numerous paper models, and tested them within their wind tunnel. By observing the forces produced by flexing the heavy paper models within the wind tunnel, the Wrights determined that control through flight surfaces by warping would be most effective, and in action identical to the later hinged aileron and elevator surfaces used today. Their paper models were very important in the process of moving on to progressively larger models, kites, gliders and ultimately on to the powered Flyer (in conjunction with the development of lightweight petrol engines). In this way, the paper model plane remains a very important key in the graduation from model to manned heavier-than-air flight.
Change it in rectangle shape with the cut (if paper is in differ shape)
Fold it in the middle and after unfold full paper as doted line
fold it with the both top corner in triangle shape as showing through doted line
Leave a little bit space below the both triangle shapes and fold it top to bottom middle side
Fold it again in triangle shape as showing in diagram through doted line
fold the small triangle to upper middle side as showing arrow
fold it in middle and after that it will be seen half shape at a time
fold it as showing in doted line and unfold in half
Now your Paper Airplane is ready to Fly !