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The Physics of Kiteboarding

A presentation regarding the various componenets of kite boarding and how physics can be used to model them.
by

Adam Bozek

on 19 May 2011

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Transcript of The Physics of Kiteboarding

Inflatable Airfoil kite




Control Bar




Waist harness




Board The Physics of Kiteboarding How can physics be used to model kiteboarding? How can these principles acting on the kite be used in order to generate clean energy? Background Information

- Bruno Legaignoux and Dominique Legaignoux developed first kite design in 1984.

-Described as a mixture between wakeboarding and flying a kite.




- The history of kiteboarding dates back to 13thcentury during the Yuan Dynasty, Chinese utilized kites in order to gather energy to propel their canoes over bodies of water Water Element Buoancy
Surface tension of water
Center of Gravity
Controlling direction with the rudder Buoyancy

The upward force which a liquid exerts to oppose an objects weight



Archimedes principle states that any floating object displaces it's own weight
Buoancy= weight displaced The property of a liquid surface which resists external forces.
Based on the cohesion of water molecules Surface Tension of Water Center of Gravity The average location of weight of an object.
Effecting Factors:
- More pressure is applied on the back foot.
- Pulling force on the harness from the harness. Controlling Fins Fins act as rudders by deflecting water flow. Water collides into one side causing that side to possess more pressure than the other.The rudder and the object will move in the direction of the lower pressure. Air Element Aerodynamics
Airfoils
Generation of Lift
-Bernoulli's Principle
-Newtons Law's of Motion
Wind Widow AERODYNAMICS:

Study of propertis of moving air and the interaction of air between solid bodies
> Lift
- Net force pependicular to the flow of air. (up)
Dependent on density of air, velocity sqyared, viscosity and compressibility and surface area

Equation: Lift=Coefficent*((density*velocity^2)/2)*wing area

>Drag
Net force perpendicular to the flow of air (down)
-Also known as air resistance
- Opposes the relative motion of an object through air.
Dependent on velocity of the airfoil.

Equation: Drag= coefficient*((density*veloctiy^2)/2) * wing area Airfoils
Achieves lift by producing an area of lower pressure that is formed above relative to the pressure below the airfoil




Air foil is rougly eliptical with a longer curve on top and shorter on the bottom Bernoulli's Principle








Newton's Laws of Motion
1st: The rider is in a state of no motion, however this external force propels the rider forwards.

2nd:The faster the wind is blowing, the greater it’s acceleration which is in turn inversely proportionate to the weight of the rider

3rd: The action force by the kite is it’s pulling force and tension force. The reaction force is the drag produced resisting the motion. Equipment What physics components have we discussed?
-Archimedes principle
-Young-Laplace equation
-Coulomb's Law
-Aerodynamic
-Bernoulli's principle
-Newton's Laws of motion How can physics be used to model kiteboarding? How can these principles acting on the kite be used in order to generate clean energy?
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