LX9000 has instantaneous HW/TW box called Cwind. But to get it to work right you need to turn off units and label and ignore the number in the right. The left number is instantaneous HW/TW Calculated from HS-TAS. As important as the Hawk wind, yet free, very simple reliable calculation, and very well hidden feature. Go figure.

Ramy

On Sunday, May 2, 2021 at 9:39:57 PM UTC-7, 2G wrote:
On Sunday, May 2, 2021 at 3:59:20 PM UTC-7, waremark wrote:
On Sunday, 2 May 2021 at 06:58:35 UTC+1, Matthew Scutter wrote:
Would you expect it to function meaningfully differently in the flatlands? Circling wind should work just fine in a homogenous atmosphere, so functioning the same would be ideal.
Similarly I would be surprised if there was improvement in variometer function from an existing well-compensated setup. All I would wish for additionally from my existing variometer is that it would read accurately in the first second of the pullup into a thermal.
Some Butterfly users reported that as you circle in a thermal you can see the wind indicators pointing in from all directions to the centre of the thermal. As to the vario, as someone else has mentioned the key aspiration is for a system which differentiates vertical gusts from horizontal gusts better than a TE vario. Again, the Butterfly was supposed to achieve this.
The best wind indicator I have used in over 40 years of soaring is watching how my circles drift while thermaling - no special sensors, sensor fusion or Kalman filtering required. Second to that is comparing true airspeed to GPS ground speed. I would like to see LXNAV implement a Nav box that differences those two values, however (again, no additional sensors or filtering required).

Tom