Tried to implement the 20% rule for a fai-triangle. The starting point '@' can be different from the first turnpoint. The angle of the circle-segment is defined by the value entered in the textbox in the upper-right window. The circle-segment is aligned to a line from starting point '@' to the turnpoint '3'. For discussion about the 20% rule feature please refer to this thread in the DHV-Forum.

0.0km
Open distance1.0)
0.0 points

Route: gpx

Turnpoints:

Instructions:
Go to your flying area by typing the name of the nearest town above and clicking Go! Choose the type of flight you want to plan using the drop-down menu. Drag the markers around to choose your turnpoints. Press the "Put turnpoints here" button to put the turnpoints on the area of the map that you are looking at.

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Copyright © Tom Payne, twpayne@gmail.com, 2009

Source code is GPL-3 here, contributions welcome! Thanks to Alex Graf for the FAI sectors and to Jonty Lawson for the GPX download.

20% Rule fastMode