Hover Over Ground Effect

The high power requirement needed to hover out of ground effect is reduced when operating in ground effect.
Hover over ground effect. There is a significant reduction in the turbulence around the tips and the outer third with a corresponding large increase in efficiency. A helicopter can hover in ground effect at a higher density altitude than it can hover out of ground effect. I have an amimated checkmark flying in from the right on a powerpoint slide indicating the correct answer to a quiz question in a powerpoint presentation. This question and comment is not about hover over effect but i am hoping you can provide an answer.
Basic concepts there are many reasons a helicopter pilot may need to hover out of ground effect. It is due to the interference of the surface with the airflow pattern of the rotor system and it is more pronounced the nearer the ground is approached. When hovering in ground effect the air is forced to move out laterally from under the helicopter which effectively increases the radius of the vortices. Hover out of ground effect oge hovering out of ground effect is the same as hovering in ground effect except that it will generally require more power due to not being in ground effect.
Ground effect is a condition of improved performance encountered when operating near within 1 2 rotor diameter of the ground. In fixed wing aircraft ground effect is the increased lift and decreased aerodynamic drag that an aircraft s wings generate when they are close to a fixed surface. When landing ground effect can give the pilot the feeling that the aircraft is floating. Maximum ground effect is achieved by hovering over a smooth hard surface.
Home made from plans available thru universal hovercraft. Ground effect hovercraft operates over any terrain while cruising at an altitude of 4 to 12 feet. A helicopter hovering at a height that is equal to or less than the span of its rotors. When hovering over grass or sand the downward airflow is interrupted by ground friction and the direction of airflow is not as precise.