Dani wrote:I'm relativly new to Condor and gliding, but isn't water a problem in the tanks when you go above 4000, 5000 or even 10 000m high? Doesn't this water freeze, leading to structural damage? As you well know, water will extend by 1/10 of its volume when freezing.
As an airline pilot I know that temps are really low up there, around -25 at 5000 and -50°C at 10 000m.
How do you plan your high altitude trip?
Wiley wrote:Some things I have learned.
In addition to taking on balast I have set the CG to the tail. For full balast I set the CG all the way to the tail. If I only take on half balast I set the CG not quite to the tail.
What this does it allow me to set the trim to neutral in normal flight which helps reduce drag. Also I realized that with the CG set to the tail I don't have to pull the stick back as far when circling nor do I run out of stick when trying to tighten my circles. Again reducing drag.
Even with no balast I think some tail CG bias is helpfull.
The speed and responsiveness of the planes have increased markedly.
Fiddeflygare wrote:I will not comment the part about you getting better handling with the C/G to the tail but i dont see how you would get less drag with the trim in neutral position? On a real life high performance glider and even most older gliders of glass/carbonfiber construction the trim only affects the stick as for example in my clubs LS8. This means that you would get the same drag having trimmed the aircraft to the speed you want as if you have the trim in neutral and push the stick forward in order to maintain your desired speed. Since you don´t have a trim rudder on the elevators.
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