
Ground-effect vehicle
Special vehicle to fly in air just above sea or ground

Special vehicle to fly in air just above sea or ground
A ground-effect vehicle (GEV), ekranoplan (from Russian: экранопла́н "screenglider"), wing-in-ground-effect (WIGE or WIG), ground-effect craft/machine (GEM), wingship, flarecraft, or surface effect vehicle, is a hybrid surface vehicle/aircraft that makes use of wings to generate minimal lift and ground effect, to reduce aerodynamic drag. Ground effect is the interaction between a moving wing and a stationary surface below it. Typically, a GEV will glide just above a relatively level surface. Some vehicles can operate over any flat area such as a lake or flat plains. Technically, GEVs do not include racecars that utilize ground-effect, for increasing downforce, as such vehicles are intended to remain in direct contact with a racetrack.
Read on Wikipedia · Image Ekranoplan_A-90_Orlyonok.jpg: Sergey Rodovnichenko from Moscow, Russia derivative work: F l a n k e r (talk), CC BY-SA 2.0
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