MindMil/XCSoar — pull request #1 by MindMil (2013-06-29 09:56:09+00:00)
Title: Circle diameter6.7

Created Circle Diameter infobox which shows estimated circle diameter and full circle flight time from smoothed turn rate and true airspeed.
It should be useful to evaluating and training circling techniques when comparing flight with ballast and without.
It incidentally is coincident with #2880 enhancement request.
Please tell me if it makes sense to include in main XCSoar branch.