posted 03-24- 02:21 PM
From what I know this true about the WI planes. This makes them more manueverable. I trim my glider like this for thermaling.Don't forget WWI planes don't have trim (the SE5a did), so they are "pre-trimmed" for a certain speed. My guess is that these planes should fly level with neatral stick at slow speeds, and the nose up should be more pronoounced at high speed. This is because the Center of Lift is in front of the Center of Gravity. so in a dive, you need much foward stick, the plane looks like it is in what is called a "tuck" position. This is less effecaint, more drag - the tail is fighting to balance the wing. But in turns, etc. the wing can be used more as a lever to tighten the turn.
The faster you go the more the lift of the wing outweighs the lift from the tail, so the off CG is more noticable.
It is recommended that you set the CG of a glider like this: Trim it for level flight. Now go into a 45 degree dive from alt. Build up speed. Now take you hands off the stick (keep stick neatral). If the glider pulls out, your CG is to far back. If the plane steepens its dive, the CG is too far forward.
Then you can tweek it a bit how you like, I fly with CG set back. This is less stable, but more manueavarable.
I may be wrong about things, as always. I mean I'm not always wrong, but ... well .. you know what I mean! 
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-Sv =FC=
WWI in SDOE!