Darryl Ramm
March 26th 10, 03:04 AM
On Mar 25, 7:47*pm, AK > wrote:
> Does anyone have any inside into how a 302 calculates wind? How good
> is it in regards to wind a straight flight with very little turning?
> How valuable is it on a ridge? What does it need in order to calculate
> probable wind one 360 turn, part of a turn, two turns?
> Any information is appreciated.
The 302 can be very good with wind just with straight straight flight
with changes in direction of +/- 30 degree or so. This requires an
accurate pitot and temperature readings. In some circumstances you
might want to take a circle to get a wind estimate. In all situations
the calculated headwind component will be pretty accurate. The 302 is
an excellent vario/wind calculator. If you are connecting say a PDA
running SeeYou Mobile or other software be aware that the wind
calculation then happens inside that software (but is also usually
very good) using TAS data passed from the 302 or using GPS circle
drift. Also the 302 does the wind calculation not an attached 303--
that's just a display, a common point of confusion.
You can look up the archives, I and others have discussed the 302 wind
calculations in more depth here. You can search the archives on Google
Groups (where you posted this message from). Try searching on "302
wind" as a starting point.
Darryl
> Does anyone have any inside into how a 302 calculates wind? How good
> is it in regards to wind a straight flight with very little turning?
> How valuable is it on a ridge? What does it need in order to calculate
> probable wind one 360 turn, part of a turn, two turns?
> Any information is appreciated.
The 302 can be very good with wind just with straight straight flight
with changes in direction of +/- 30 degree or so. This requires an
accurate pitot and temperature readings. In some circumstances you
might want to take a circle to get a wind estimate. In all situations
the calculated headwind component will be pretty accurate. The 302 is
an excellent vario/wind calculator. If you are connecting say a PDA
running SeeYou Mobile or other software be aware that the wind
calculation then happens inside that software (but is also usually
very good) using TAS data passed from the 302 or using GPS circle
drift. Also the 302 does the wind calculation not an attached 303--
that's just a display, a common point of confusion.
You can look up the archives, I and others have discussed the 302 wind
calculations in more depth here. You can search the archives on Google
Groups (where you posted this message from). Try searching on "302
wind" as a starting point.
Darryl