Download - Boomerang
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Jagadeesan P
20061241
B O OMERANG
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ORIGIN
• Australian Aborigines
• the language of the Indigenous Australian Turuwal tribe
• Oldest - 30,000 years
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LIFT
WEIGHT
FORCE
DRAG
FORCES ACTING ON BOOMERANG
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• BERNOULLI’S PRINCIPLE (AIR FOIL)• COANDA EFFECT
LIFT GENERATION
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AIR FOIL IN BOOMERANG
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Right handed boomerang Left
handed boomerang
TYPES OF BOOMERANG
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LAUNCHING POSITIONS
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Gyroscopic effect
Why it comes back?
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One of the wings produces more lift compared
to the other which creates a moment about an
axis perpendicular to the axis of rotation of the
boomerang thus creating the gyroscopic
precession.
Gyroscopic effect in boomerang
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Thus with a simple physical phenomenon a toy with a great deal of surprising behavior and fun
is born
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• Weltner, Klaus and Ingelman-Sundberg, Martin - Misinterpretations of Bernaulli’s Law; Physics of Flight
• Saulius Pakalnis - Aerodynamics of Boomerang
• www.researchsupporttechnologies.com• www.grc.nasa.gov
References:
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QUESTIONS???