[bongodriver]

Really, think about it, every pilot has to account for it in their flight planning.

Yes...even PPL's, so how does it come a major research institution was unaware of the difference?

We will come back to it and here is a huge hint, if you recognize it.

Tell me, what is the difference between these too formula's?

Both formulat's express the same thing.





I am begining to think the men in the VVS were not so stupid, huh!

You certainly cannot explain it and you are pilot, right?

Yes I am, just like the copies of my commercial pilot's licence showed in the other thread, but I am not an amateur internet aerodynamicist so your graphs and walls of copy/pasted text etc etc hold no interest to me.