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    airfoil

    US /ˈerfɔɪl/

    ・

    UK /ˈeəfɔɪl/

    A1
    n.NounA device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight

    Video subtitles

    How Airplanes Work: A Simple Explanation for Beginners

    04:08How Airplanes Work: A Simple Explanation for Beginners
    • This makes for a cross-sectional shape known as the airfoil.

      This makes for a cross-sectional shape known as the airfoil.

    • As the aircraft moves through the sky at high speeds, the curved airfoil design allows the air above the wings to move faster than the air below them.

      As the aircraft moves through the sky at high speeds, the curved airfoil design allows the air above the wings to move faster than the air below them.

    B1

    Lift: Bernoulli’s Principle (How Things Fly Demonstration)

    02:13Lift: Bernoulli’s Principle (How Things Fly Demonstration)
    • Now I can explain that using this airfoil here.

      Now I can explain that using this airfoil here.

    • An airfoil is like a cutout or a cross section of a wing.

      An airfoil is like a cutout or a cross section of a wing.

    A2

    The Basics of Aerodynamics

    07:21The Basics of Aerodynamics
    • An airfoil is any surface, such as a wing, that provides aerodynamic force when it interacts with a moving stream of air.

      An airfoil is any surface, such as a wing, that provides aerodynamic force when it interacts with a moving stream of air.

    • It is an imaginary straight line drawn through the airfoil and the direction of the relative wind.

      It is an imaginary straight line drawn through the airfoil and the direction of the relative wind.

    B1

    Stephen Colbert Interviews Neil deGrasse Tyson

    24:42Stephen Colbert Interviews Neil deGrasse Tyson
    • But if I say, who wants to be an engineer and design the airfoil that'll fly in the rarefied atmosphere of Mars, I'm going to get the best students in the class.

      But if I say, who wants to be an engineer and design the airfoil that'll fly in the rarefied atmosphere of Mars, I'm going to get the best students in the class.

    • and design an airfoil that will fly in the rarified atmosphere of Mars

      and design an airfoil that will fly in the rarified atmosphere of Mars

    B1

    How do Airplanes fly ?

    06:23How do Airplanes fly ?
    • Their aircraft was a success thanks to an interesting phenomenon of physics: the airfoil technology.

      Their aircraft was a success thanks to an interesting phenomenon of physics: the airfoil technology.

    • The airfoil technology.

      The airfoil technology.

    B2