In answer to Pilot Dar's original question starting this thread.
It obviously isn't.
I've read some rubbish over time, but some of this really takes the biscuit.
All this krap about Mass X V = the square root of an orange to the 10th power of a pile of horse ****e.
There is nothing to it.
An aeroplane flies round in circles in the air.....full stop. FFS.
Edit: Is there a misconception here about the term "downwind"?
As far as the wind or air mass is concerned , there is no "downwind".
Into wind or downwind are referenced from the ground.
Last edited by Crash one; 14th Feb 2017 at 12:07.