| http://www.w3.org/ns/prov#value | - When the airfoil or the body is in motion relative to the air, the VG creates a vortex,[1][3] which, by removing some part of the slow-moving boundary layer in contact with the airfoil surface, delays local flow separation and aerodynamic stalling, thereby improving the effectiveness of wings and control surfaces, such as flaps, elevators, ailerons, and rudders.[3]
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