hugh-flung-dung
Now that you've got an estimated track it's wise to check it. When you turn onto the new heading (in nil wind) if your estimate is correct, then the line between your start point (180/20) and destination (090/30) will be vertical.
You can also use this method to check your progress. One way is to use the ADF card or the RMI to visualise your destination (090/30) compared to where you are along your new 'track required'. If you are not on this track, then the line between where you are and the destination (090/30) will not be vertical.
Make a correction in the natural sense to your heading to make that line vertical and you will be tracking towards your destination. If you are lucky enough to fly a biplane fitted with an RMI, like BEagle does, then with some practice this procedure is quite easy.
I was taught this years ago and have never used it except in flight tests. However, it makes an interesting cockpit conversation topic and I suppose if someone pulled the plug on the satellites you could save a few track miles. But then I'd be inclined to overfly the azimuth aid.
Cheers!
PITHBLOT
Last edited by pithblot; 6th February 2007 at 13:31.
Reason: Clarify start point & destination