G1000 Data Log WndDr

[GaryRudolph]

Anybody know what the WndDr means in the G1000 data log file?

It appears to go from +180 to -180. What does 0 mean? 100% Headwind or Tailwind? Or a wind from the North? I'm trying to calculate the headwind/tailwind component.

 

[flyingcheesehead]

I just pulled up one of my old data files to have a look at this.

There is a column for WndSpd in kt and WndDr in deg right next to each other. As you noted, it ranges between -180 and +180.

For example, on one line, I have the following:

87.08 kt IAS
82.34 kt GndSpd
89 kt TAS
229.2 deg HDG
232.2 deg TRK
6.64 kt WndSpd
-163.9 deg WndDr

Something about this doesn't make sense to me, but that's probably because I should be in bed. Looking at TAS vs. GS, we should have a headwind, and TRK vs HDG indicates we have a wind from the left. From the left and in front of us would be between 0 and -90 on WndDr, though. Odd. Is that what you're seeing?

BTW, have you seen CirrusReports.com yet? And what kind of aircraft are you logging data in?