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Jagadeesan P
20061241
B O OMERANG
ORIGIN
• Australian Aborigines
• the language of the Indigenous Australian Turuwal tribe
• Oldest - 30,000 years
LIFT
WEIGHT
FORCE
DRAG
FORCES ACTING ON BOOMERANG
• BERNOULLI’S PRINCIPLE (AIR FOIL)• COANDA EFFECT
LIFT GENERATION
AIR FOIL IN BOOMERANG
Right handed boomerang Left
handed boomerang
TYPES OF BOOMERANG
LAUNCHING POSITIONS
Gyroscopic effect
Why it comes back?
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
Thus with a simple physical phenomenon a toy with a great deal of surprising behavior and fun
is born
• 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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