Re: aerodynamic question

From: John Barker <john.barker783_at_ntlworld.com>
Date: Mon, 5 Nov 2012 22:54:46 -0000

Gary
This is really a trimming dodge I picked up in the 1940s and it was probably well known even then. I had learnt to use some wash-in on the inside wing of the turn to avoid spiral dives. If you found you had not put in enough wash-in you realized that if you skewed the wing then the dihedral gave the effect of wash-in to the wing panel that was skewed forward and wash-out to the wing panel that was skewed back. The wash in of course gives as rolling moment on the model ( with right tip forward a roll to the left.) The roll then will cause a slight left sideslip and therefore, eventually a left turn.

John
Received on Mon Nov 05 2012 - 14:54:55 CET

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