Hi Guido, 

I recently created a polar for a glider that was not available via the usual 
sources. I just downloaded a silmilar polar file, then replaced the values by 
numbers I got from a plotted polar I had. It's easy and takes only ten minutes 
to complete. 
Did the same for an available polar but different wing loading, the ship has no 
water ballast but a heavy pilot and a laaaarge battery to max out the mass 
limit. You can check the polar file by displaying it in XCSoar via the info and 
then analyze button, then go to the polar page. Er ... wait ... I'm sure it 
worked like this last time, though now I try, it appears the polar page does 
not show up. 

Does my memory serve me bad or does XCS no longer show the polar? I try again, 
and only after going to the glide computer page and re-selecting a polar does 
it show in the analysis, then it hangs on the page and does not accept any 
input no more. Now after I reset the HP314, it displays a polar in analysis, 
though under the "wind at altitude" headline. As I type this, about 30 seconds 
later, the headline changes to "glide polar". Strange ... 

Viele Grüße, 
Martin Kopplow

---

Am 16.12.2010 um 16:48 schrieb Max Kellermann <[email protected]>:

> On 2010/12/16 16:39, Guido Hasel <[email protected]> wrote:
>> how can I create a polar-file without using winpilot?
> 
> I am not aware of a free polar editor.
> 
> You can however create a polar file with a text editor such as
> Notepad, the file format is simple, here's an example from our source
> code:
> 
> MassDryGross[kg], MaxWaterBallast[liters], Speed1[km/h], Sink1[m/s],
> Speed2, Sink2, Speed3, Sink3
> 
> 403, 101, 115.03, -0.86, 174.04, -1.76, 212.72,  -3.4
> 
> The file has one line with 8 numbers, separated with commas.
> 
> Max
> 
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