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Old 11-01-2009 | 12:54 AM
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BMatthews
 
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From: Chilliwack, BC, CANADA
Default RE: Stab twist: one side. Effect?


ORIGINAL: dick Hanson

Here is another trim which is fun to play with

IF on puts a small plate at the top TE of the rudder
What is the effect on pitch?

You mean sort of like a Gurney flap but on both sides? So it's flat to the airflow?

If it's at the top of the rudder's trailing edge it's going to act like up trim and lift the nose..... unless the trailing edge is strongly swept back or forward in which case it'll cause some up trim for a swept back TE and a down trim for a swept forward TE. But that'll fight the drag induced up trim so it would take a really strongly swept forward TE to see any nose down tendency from the plate.

So... what do I win?