On Tuesday, May 14, 2019 at 10:45:05 AM UTC-4, Rob Shepherd wrote:
Where would be the best place to install an OAT sensor?

At the very beginning of the air vent intake is usually OK.
Absolutely not further back in the vent channel, as the
indicated temperature will be much higher than OAT when
the vent is closed.

OAT is needed for air density, in turn needed for true airspeed.
Without density corrections many calculations like STF and estimated times
will be wrong (as unfortunately in some popular open source software).
True airspeed must be accurate for good wind calculations.

Number one reason folks have poor wind indication on ILEC SN10
is poor OAT installation, usually because they placed the sensor
in vent duct way behind intake.

Hope that helps!
Best Regards, Dave

PS: If you want to better understand the density effects, it's included he
https://edwilliams.org/avform.htm
Doesn't have glider polar calculations (left as an exercise for the reader ;-)