Originally Posted by
Ulric
Thanks. The reason for asking about the rhumb line is that I'm looking for any assumption which might narrow down the possible heading. It occurred to me that the South Magnetic Pole might be a testable hypothesis if it could result in plausible tracks.
I have tested this for great circles between waypoints (LNAV mode), between BEBIM (and a shifted version to the east) toward 3 destinations: the south pole, the Wilkins airport and NOBEY
...to compare to the final portion (between the 2 last ping rings) of the varied south legs (corresponding to varied ground speeds from 320 to 520 kts)
https://drive.google.com/file/d/0B3s...it?usp=sharing