My tetrahedron

1. My tetrahedron By: Kenneth O’Garra

2. Project Overview The point of this project is to teach us the basics of flight and one mistake can mess up the whole project.

3. What I’d like to learn I’d like to learn how to make different kites so that I’ll be able to show friends and family how to make them too.

4. Basics of flight Thrust-The force of forward movement is called thrust, and it's created by the engine-driven propeller or a jet engine. Lift-As the wing moves forward, the air flowing over the top travels faster than the air flowing beneath, resulting in a lower pressure area above the wing. The relative pressure differential provides the upward force called lift. Lift is basic to flying. Gravity-When gravity is greater than lift, the airplane will descend. Drag-Whenever drag is greater than thrust, the plane slows down. Apparent weight-is a basic force of nature where all objects with mass attract each other Physical effects of G-force- http://www.wingsoverkansas.com/learn/article.asp?id=256

5. The different types of kites The sled-This kite gets its name from the shape which resembles a sled. The diamond-The basic shape of a kite. The barn door-This kite gets its from its large shape. The Rokaku-This is the smallest kite. The sode- it gets name because it resembles a Japanese outfit. The delta-The most common kite of them all.

6. Difference between a kite and a plane Well, a glider has pretty much the forces of lift, drag, and gravity acting on it (similar to the airplane, but with no thrust). It moves forward so many feet per foot lost in elevation, called a glide ratio. The glider will be designed to achieve the best glide ratio at a certain airspeed (speed of air moving past the glider). Just remember that a glider has no thrust to push it through the air. So, in calm wind, the glider will not gain or lose air speed on a consistent glide path. If the glider encounters a headwind while on this same glide path, the speed of the glider over the ground will decrease, but it’s airspeed will increase, and then slowly decrease until it achieves that same glide ratio. A kite, however, has a string attached to it. This string acts like a form of thrust. A kite needs a form of thrust to get it in the air (that’s why you need to run with it at the beginning, unless it’s a really windy day). Once you get it in the air, the string that keeps it tethered to the ground keeps airborne. Its airspeed is equal to the wind speed. If the string were to break, it would blow away with the wind, its airspeed would drop, and it wouldn’t stay airborne. The string is what keeps the kite fighting into the wind, keeping its airspeed up. So, even though the kite isn’t moving forward, it still has airspeed, until the string breaks. In an airplane, it needs to use thrust to achieve a certain airspeed to take off. BUT…If a small plane is sitting on the ground with its nose pointed into the wind blowing at 60 knots, the plane could take off without any use of power, but like a kite without a string, it would just come back down. http://mrpoluk.edublogs.org/2011/11/25/what-is-the-difference-between-a-kite-and-an-airplane/

7. conclusion My kite could have flown better if I had my strings more tighter. Ifthe frame was stronger it would have flew better.

8. Picture OF Kites