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Aviation Glossary :: Airfoil  Aviation Glossary :: Airfoil FAA Written Test Preparation
Aviation Glossary Welcome to the Dauntless Aviation Glossary!

At Dauntless, our editorial staff maintains the web's largest unified glossary of aviation terms. This glossary is built from a combination of official, quasi-official, and proprietary sources (including original material that we develop oursselves). Uniquely, we often provide multiple definitions of a given term so that you can find that which best applies to you. In order to maximize your learning efficiency, this glossary (and similar ones for our international users) is incresingly fully integrated into our aviation learning apps, including our FAA written test prep and FAA practical test prep software and apps. If you like this glossary, you'll love them with their polished learning environments and world's best and clearest content (please do give them a try.).

Airfoil
Airfoil
Any surface designed to be projected through the air in order to produce a useful dynamic reaction.
source: Airship Aerodynamics Technical Manual (1941)
The shape of any flying surface, but principally a wing, as seen in side-view ("cross-section"). Its characteristics are Center of Pressure (CP), DRAG (CD), LIFT (CL), Lift-Drag Ratio (L/D), and Moment (CM).
source: FAA Aerosense Glossary
An airfoil is any surface, such as a wing, propeller, rudder, or even a trim tab, which provides aerodynamic force when it interacts with a moving stream of air.
source: FAA Airplane Flying Handbook (FAA-H-8083-3A)
Any surface designed to obtain a useful reaction, or lift, from air passing over it.
source: FAA Aviation Maintenance Technician Airframe Handbook (FAA-H-8083-31)
Any device that creates a force, or lift, based on Bernoulli’s principles or Newton’s laws, when air is caused to flow over the surface of the device.
source: FAA Aviation Maintenance Technician General Handbook (FAA-H-8083-30)
The surfaces on a glider that produce lift.
source: FAA Glider Flying Handbook (FAA-H-8083-13A)
Any surface designed to obtain a useful reaction of lift, or negative lift, as it moves through the air.
source: FAA Helicopter Flying Handbook (FAA-H-8083-21A)
Any surface, such as a wing or propeller, which provides aerodynamic force when it interacts with a moving stream of air.
source: FAA Weight Shift Control Handbook (FAA-H-8083-5)
The profile of a rotor blade (or wing) that would be present if the blade was sliced from the leading edge to the trailing edge. The term “airfoil” also often used to refer to the actual airfoil or lifting surface itself.
source: Glossary of Gyroplane Terms

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Disclaimer: While this glossary in most cases is likely to be highly accurate and useful, sometimes, for any number of editorial, transcription, technical, and other reasons, it might not be. Additionally, as somtimes you may have found yourself brought to this page through an automated term matching system, you may find definitions here that do not match the cotext or application in which you saw the original term. Please use your good judgement when using this resource.


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