On Jan 13, 8:23*am, "kirk.stant" wrote:
Is anyone working on or studying using WAAS GPS data to make a stand-
alone vario? *How would TE be implemented in such a device? Ground
speed change during a pullup? *TAS based on circling winds?

Do the current PDA software programs (mSeeYou, Winpilot, etc.) when
used in GPS-only mode provide accurate vario data when hooked up to a
WAAS GPS?

Just curious - seems a 5 hz WAAS GPS could be the basis for a really
nice vario that wouldn't need any pitot-static imputs. *I use mSeeYou
and a Themi, non-WAAS, and the "vario" data seems close, but I use it
more for trend and average than instantaneous data.

Winter can't end soon enough!

Kirk
66

Yes but how does it tell the difference between an increase in wind
and a pull up? How will it handle STF calculations in a strong
headwind/wave where it may be really confused what is going on?

Darryl