On Tuesday, January 21, 2014 2:04:40 PM UTC-5, Lucas Pirolla wrote:
If manufacturers stopped providing polars for their new gliders,
how are the computer manufacturers supposed to calculate data
for those gliders, like STF ?

Some of us work with the glider manufacturers and are not allowed
to release the raw data we use to generate the polars. In some
cases we take the published polars and adjust out the marketing
factor (which can be quite large). Other cases we adjust based
on results we observe during extended competition flights...

Probably not the answer you wanted !
Hope this helps,
Best Regards, Dave