Page 30 - How It Works - Book of Amazing Answers To Curious Questions, 12

AMAZIG ANSWERS TO CURIOUS QUESTIONS -------------------

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Why do boomerangs come bacl<?

Learn the principles that make this flying stick return to sender

boomerang is basically a travel quicker in order to reach
single-winged aircraft the other edge of the wing.
Apropelled through the air Because the two sides of a
by hand. Boomerangs have two boomerang have different air
'wings' joined in a V-shape. Both speeds flowing over them, as it
wings have an airfoil-shaped spins the aerodynamic forces
cross-section just like an aircraft acting upon it are uneven. This
wing. An airfoil is flat on one side causes the section of the
but curved on the other with one boomerang moving in the same
edge thicker than the other- this direction as the direction of
helps the boomerang stay in the forward motion to move faster
air due to lift. through the air than the section
Lift is generated as the air moving in the opposite
flowing up over the curved side direction. These uneven forces
of the wing has further to travel make the boomerang start to
than the air flowing past the flat turn in and follow a circular
side. The air moving over the route, eventually heading back
curved surface must therefore to the thrower.

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