Darryl Ramm wrote:
On Jun 2, 5:09 am, "Ken Kochanski (KK)"
wrote:
Good Morning,

How does SeeYou calc wind speed and direction when you are reviewewing
flight logs.

I notice the wind shifts direction and velocity ... even while running
ridges ... so I assume it is not using some measurement of drift while
thermal-ing ...

KK

It depends on the IGC file, there may be TAS data in the file or wind
vectors in the K-record in the IGC file. This has been discussed here
in the past. For a plain IGC file SeeYou can only use circle drift.


Darryl
From the SYM manual:
Wind is calculated using three methods in SeeYou Mobile
.. Position drift when Lat/Lon are the only available data
.. Groundspeed difference when groundspeed and track are received from
the GPS
.. Combination of Groundspeed and straight flight when true air speed is
received from the instrument.
In this case, the wind is updated in straight flight as well.