Boomerang
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A boomerang is a thrown tool typically constructed with airfoil sections and designed to spin about an axis perpendicular to the direction of its flight, designed to return to the thrower. The origin
Aerodynamic returning boomerang
An Egyptian boomerang; National Archaeological Museum, Athens, Greece.
Australian Aboriginal boomerangs
Various types of boomerangs from Australia, India, and Africa
Airfoil
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An airfoil or aerofoil is a streamlined body that is capable of generating significantly more lift than drag. Wings, sails and propeller blades are examples of airfoils. Foils which work in a similar
Boomerang
…A boomerang () is a thrown tool typically constructed with airfoil sections and designed to spin about an axis perpendicular to the direction of its flight, designed to return to the thrower. The origin of the word is…
Lift and drag curves for a typical airfoil
An airfoil section is displayed at the tip of this Denney Kitfox aircraft, built in 1991.
Airfoil profile of a Kamov Ka-26 helicopter's lower rotor blade