Ground effect

collection of aerodynamic principles that apply when objects move close to a surface

The ground effect is the name given to the effects of being near the ground on Aircraft, especially ones that are heavier than the air around them, such as Helicopters and Airplanes.

In Airplanes

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In Airplanes, there is less drag in ground effect flight. Airplanes also create more lift at a lower angle of attack while near the ground.[1]

References

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  1. Pistolesi, E. (1937-06-01). "Ground Effect - Theory and Practice". National Advisory Committee for Aeronautics.