Science+Experiment2

=Airplanes=

What design makes a airplane fly?

 * Backround information-** According to this website http://www.allstar.fiu.edu/aero/fltmidfly.htm For a moment, think of an airplane moving from right to left and the flow of air moving from left to right. The weight or forces do to gravity pulls down on the plane opposing the lift created by air flowing over the wing. Thrustis generated by the propeller and oppose drag caused by air resistance to the airplane. During take off, thrust must be greater than drag and lift must be greater than weight so that the airplane can become airborne. Airplanes fly like when we put are hands out and swing it you feel air but if you put your palms facing down its more easier to swing through the air that is how a airplane is. Long flights come when these four forces drag, gravity, thrust, and lift are balanced.

Bernoulli Principle**-**The principle states that the pressure of a fluid (liquid or gas) decreases as the speed of the fluid increases. Within the same fluid (air in the example of aircraft moving through air) high-speed flow is associated with low pressure and low-speed flow is associated with high pressure . This applies to the lift produced by the wing of an airplane . This difference between the decreased pressure above and the increased pressure below produces lift. Making a wing with more curve on the top surface have greater lift than a wing with flat surfaces.

Diagrams


 * Hypothesis-** I think that the airplane is just flown by the gravity and the pressure and im sure what is found is correct.


 * Procedure-** Im going to make my own little paper airplane and use the four forces that make a real plane fly to my paper one. I will look up different designs and see what are some different designs are better and what makes them better. This wont take long its just the getting the four forces to be balanced and have everything perfect on the paper airplane just like a real plane.


 * Material-** All i really need is some paper, i need the internet, ill need some paper and pencil to write down my data and results, and ill need to have a ruler maybe.