Thanx so far guys,
Davies in his book 'Handling the big Jets' also talks about the 15' when wet ... unfortunately without giving specific reasons in terms of aerodynamics and/or performance ...
That was, what I was hoping to learn, the aerodynamic and/or performance related reasons for the differences in screen height ...
I know, V2 is not related to ground effect, but is the speed you (should) reach at 35/50 foot in the engine out case ...
35/50 foot however seems to be based on the consideration of the aircraft leaving ground effect ...
As far as I can remember, Davies also mentions this in his book ...
So, why the differences, which ever nature they are? ... wet=15' ... piston and/or prop (statements differ)=50' ... jets=35' ... ???
Was hoping to get some answers from the guys who develop and build the stuff we have the pleasure to fly ...
Thanx in advance for bringing it on ...
LF
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Let there be cold beers on a hot day !!!