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Old 18th Sep 2017, 19:24
  #1150 (permalink)  
Rusty1983
 
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Originally Posted by Alex Whittingham
Terrible, Have just done a rough calculation assuming all Os and Hs are the same and get 300KT. Was that an answer?
i came during the exam due to my good math skills to an answer with weird calculation of unknown factors ended up at 200kts, which was an answer...unfortunately the wrong one.
There were 5 answers, I dont know if 300 was one of them, but Ill check next time, when and if Ill get it again.

But one thing is not logical for me in this calculation. I know that assuming O and H the same the calc would be possible, but what makes a knot in my head is, that O and H cannot be the same, due to PET is after the midpoint, which means I have a headwind in going out and a tailwind in going back. The only thing what I assume now is, that I use now O or H and make out of the two an equation with only one variable and put this then in the big PSR formula....but then I get a few knots in my head...
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