Optical lift is different from the aerodynamic lift created by an airfoil.
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Most helicopters have rotating airfoil shaped blades on top of the fuselage.
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They're going to have an airfoil which allows it to return.
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So now we're gonna make this boomerang come back by adding an airfoil.
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Let's say the airfoil was a rotating plastic disk, absolutely transparent.
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The supporting surfaces, consisting of the main plane, or aerofoil, behind, and the elevator in front.
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Aeroplane-A power-driven aerofoil with stabilizing and controlling surfaces.
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Loading-Theweight carried by an aerofoil.
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We now know better; over about 15 thou' you are subject to icing, and your aerofoil and consequently your lift go.
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Mountain Equipment Aerofoil Jacket The Mountain Equipment Aerofoil Jacket.
Ús de wing section en anglès
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Through the glasslike hull Louis saw a conduit as thick as his thigh leading through the hull into the wingsection.
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Our America's Cup correspondent Todd Niall says there were dramatic scenes for Team NZ before the race with a broken wingsection on the boat.
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Strewn along the flight path they first found a wingsection, then the nose, the rest of the wings and the aircraft's tail and engines.
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Even within the 'Left WingSection' itself democratic methods are not used.
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This increase in efficiency was due to careful attention to detail in every part, improved wingsections, clean fuselage-lines, and simplified undercarriages.