Gen Nav question, Heeeeelp?
Hi all, anyone figure this one out for me?
A route is being plotted on a Lamberts Chart using a grid aligned with the Greenwich meridian. The aircraft is at 49 S 100 E tracking 100 G. The convergence factor for the chart is 0.75, variation is 10 E, deviation is 4 E and drift is 7 right. The aircraft s true track is:
(a) 011
(b) 008
(c) 018
(d) 025
Ans is 25, but is my working out of it correct.
If the convergence factor is .75 and the chlong between datum and 100E is 100dgs, then the convergency between datum and 100E is 75dgs.
Diff between grid and true track is the convergency between the datum meridian and that point, ie 75dgs, therefore 100 -75 is 25?
So all the deviation, drift and variation is to confuse you?
Be nice to have this clarified, thanks for any comments
Powdermonkey
My exams are next week....... and this one I simply can't get.
Would be thankfull if someone could show me how to approach this one.
Cheers