On 30 mar., 20:26, Tom Nau wrote:
On Mar 30, 12:01*pm, wrote:



Two of the most useful features to me in SeeYou Mobile, (or any other
soaring software) is the ability to display the L/D to any point, and
more importantly, your actual, achieved L/D over the ground in real
time. *If you are flying to maximize your L/D over the ground, the
advantage is that for any combination of wind component or lift/sink,
you can change your speed and see the result without resorting to
calculations, rules of thumb, etc. *The downside is that if the
software calculates the achieved L/D instantly, then every bump or dip
will result in a wildly varying readout. *The L/D achieved must be
damped and averaged over some period of time to be useful. *If this is
too long, then changes in speed will take too long to display a
corresponding change in the current L/D making it less useful to fine
tune your speed into, say, a debilitating headwind. *SeeYou Mobile
appears to either have a pretty long average with a slow response, or
my old Phoebus has the world’s flattest polar. *Does anyone know over
what period of time the achieved L/D is averaged in SeeYou Mobile, or
know of any way to adjust it? * I can’t find anything about it on
their site and wondered if anyone knows before I contact them. *If I
am fundamentally wrong about any of the above, please feel free to
straighten me out. *I just want to learn, not argue.

Thanks… Don

If I recall correctly, I remember reading somewhere that it is a 2
minute average.

Tom

2 minutes it is. We first thought we would make it an option but after
a few flights it became apparent that 2 minutes is the perfect
compromise.

Cheers,
Andrej Kolar
--
glider pilots use
http://www.SeeYou.si