Thank you for your feedback.
a) On what speed the landing performance computation is based on?
On Vref (Vref+5/-0, Vref+20/15 …etc?) or on touchdown speed?
Extra speed (due to wind additives) + residual thrust when closing the thrust levers (due to longer spool down time) + the ground effect ==> increase the chance to float (due to extra lift). In order to reduce the “floating” you have to reduce the extra lift, thereby you have to reduce the speed (lift is proportional to the square of the speed).
b) Why aircraft manufacturers didn’t use/recommend the use of thrust reversers to reduce the “floating”?
c) Is there a risk for aircraft or engine limitation/problem…etc?
d) Is there a risk of “floating” for prop aircraft during the flare? I am assuming they can use the props as thrust reversers to reduce the speed and the lift during the flare.
Feedback appreciated