Marc,

Thanks, I understand now. That would be a step in
the right direction and I think that a new pre-calculated
polar sent to the 302 will probably be used by the
303.

However that is not quite the same as the 302 having
the ability to calculate a new polar for itself from
a bugs setting entered on e.g. a hypothetical new bugs
factor screen which is what I think would be far more
generally useful (essential) in that it could be used
no matter what software is used in the PDA or even
with no PDA for 302/303 users.

In the case of ballast settings, I think that GN11
sends a setting to the 302 (which then calculates the
ballast adjusted polar internally) rather than sending
a newly calculated polar, so the 302 should be able
to do the same for bugs settings sent from the PDA
- IMHO.

Another note to CAI I think.


John Galloway


At 18:42 13 September 2003, Marc Ramsey wrote:
'John Galloway' wrote...
Which software does send a new bugs adjusted polar
to the 302? Will it make the PDA software, the 303
final glide altitudes, and the 302 speed to fly all
use the same polar?

My homebuilt software changes the polar in the 302
when the bug setting is
changed. This affects the 302 STF indications, but
would not, to my knowledge,
change anything in the 303 (I don't have one). The
303 listens for changes in
ballast, MacCready, etc., from the 302, but there probably
isn't any way for it
to know that the polar has changed. The only way to
get bug support in the 303
is to lobby Cambridge to change the firmware.

Marc