Approach Ground Effect Knot 
Pilot Institute
MARCH 28, 2025
Vortex size is also affected by proximity to the ground. If youre flying low enough to be in ground effect, the vortex isnt able to fully develop. As the swirling air strikes the ground, the vortex is pushed laterally along the surface. This lateral movement takes place at a speed of about two or three knots.
Flight Training Central
SEPTEMBER 9, 2024
What is ground effect? What is the headwind component for a landing on Runway 18 if the tower reports the wind as 215° at 30 knots? Ground effect is most likely to result in which problem? 187 knots 162 knots 165 knots Correct! It reduces climb performance. a higher-than-normal angle of attack.
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Fear of Landing
MAY 3, 2024
The prototype lifted off, hovered and flew at a speed of 40 knots before landing. Once stable in ground effect, the pilot shut down EPU1 (left-side outboard) to simulate the performance in the case of an engine failure. The pilot then increased acceleration with a target of seven knots ground speed.
Air Facts
MARCH 26, 2025
The airspeed indicator registered 55 knots, close to the Cessna 172s stall speed. But as I banked into my final approach, my heart sank. I did the worst thing possible and tried to lose altitude by steepening my approach. Time seemed to freeze as I floated in ground effect.
Pilot Institute
MARCH 26, 2024
As you approach the airport, monitor UNICOM for landing or departing traffic. Another performance factor is the approach speed. The slower the approach, the shorter the landing distance. Many aircraft have specific recommended normal and short-field approach speeds. It will allow you to fine-tune your approach.
Pilot Institute
MARCH 29, 2024
The stall warning horn sounds at least 5 knots above the actual stall speed. Since you need to fly without triggering the warning, select a target airspeed of about 2 to 5 knots more. As the aircraft approaches the target airspeed, add power to ensure you don’t slow down past it. Trim the aircraft to relieve control pressure.
Chess In the Air
JUNE 24, 2022
Approaching Rifle The last six minutes of Shmulik’s flight are plotted on the following map. For each data point you can see the time stamp, the altitude MSL, the Ground Speed in kt, and the Vertical Velocity in feet per minute (fpm). Shmulik flew quite fast at ground speeds between 100 and 130 kt, carrying a lot of extra energy.
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