On Feb 22, 2:35 pm, "Ken S. Tucker" wrote:
FWIW, I definitely agree, I'm talking about hitting pavement.
It's the ground-effect that can keep the plane floating, that
is a mysterious effect (not really well understood) that does
happen at landings, but can be used to advantage, if you're
not a *fraidy cat*.
Once the rolling air from ground effect is achieved, a new
dynamic is effective. Of course that "rolling air" needs AoA
to be maintained, so nudging forward kills the "ground effect"
and you're very near a 3 point landing.
Maybe you guys want to analyse "ground effect lift".
Ken

Ground effect is not a mystery to those who have taken
groundschools and have licenses. It's mystery to simulated "pilots."
Ground effect was well understood by aerodynamicists a long time ago,
and it's been explained in the textbooks since then.
Lowering the nose just before touchdown just reduces AOA so
that the airplane thumps onto the runway. It's not going to squeak on.
It's sloppy and stupid and damages things.

Dan