Am 05.01.2011 um 13:57 schrieb Hannu Niemi:

> Sorry, can't help, but 100% bugged glider looks (by definition) a (big) 
> bug ;) 

Yepp, but XCSoar only allows you to set a 50% to 100%, so, in real life it 
appears 100% means clean and 50% is what? 

- 50% of LE surface covered with bugs or 
- 50% performance reduction due to bugs? 

I know it's the latter, as per the manual. 
Still, that's hard to estimate. 
I wonder how you guys do that? 
Do you check your sink rate at a given speed? 
I usually don't deal with it at all, I just add an estimate to the arrival 
safety height ... 

Just thinking loud here: 
Could an overall performance degradation be automatically estimated from the 
average flight data over a given time interval? 
Could this be used as a proposal for bug setting? 
Or could we maybe set an estimated bugging rate for the day for XCS to include 
in the calculations and only hit a "Bugwiper" button when we have wiped them 
off? Flying low would increase the bug build up rate, while flying high would 
add less, of course. 

Viele Grüße,
Martin


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