Ground Effect Indicated Airspeed Lift 
Chess In the Air
JUNE 24, 2022
There were some patches of moderate lift and sink as would be expected on a normal summer soaring day. Shmulik flew quite fast at ground speeds between 100 and 130 kt, carrying a lot of extra energy. His ground speed had dropped to 75 kt so he also had less kinetic energy reserve.
Air Facts
SEPTEMBER 9, 2024
An incomplete summary description of FASF is whether the airplane made it out of ground effect. To get the extra lift required for the turns, I had to dive to get extra airspeed so that the plane could turn at that same AOA. That phenomenon is best named Failure to Achieve Sustained Flight (FASF).
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