Third method for "LocatingX" page in spreadsheet. The Vms speed can
be found by establishing a partial power glide where the power is somewhat
below what would be needed for level flight. At this power setting, the airspeed
that produces the minimum sink as measured by GPS is the Vms.
Verification can be done as already described.
CAUTION: There is an error in
the older spreadsheets that makes TAS computations wrong above 10,000. I will fix it soon.
Short cut instructions for finding drag: Here