How do I change my husbands e mail - all this europa info comes to me and it
should go to Martin Sambrook martin@thesambrooks.net,
Thanks Jan
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of rparigoris
Sent: 13 April 2010 23:22
Subject: Europa-List: Re: Effects of Flaps and Ailerons on Pitch Trim
Another contributing factor to necessary stabilator force required is engine
angle. An easy check would be to trim for normal cruise speed with engine
running, note trim position and measure precise location of stick (string or
ruler). Then kill engine, prefer if you can feather prop, but stopped prop
is sufficient, then with trim in same location and stick brought to precise
location see what speed you achieve. If speed is greater than engine on
cruse speed you don't quite have enough down engine angle (prop end not down
far enough) for most efficiency and vise versa (less speed and too much
down engine angle).
On models and full scale having a slight positive nose up pitching is not a
bad thing.
BTW similar technique can be used to dial in CG on a model, motor off trim
for a few MPH over stall, then dive to maneuvering speed and put stick in
exact position it was to achieve trim a few MPH over stall, if it pitches
wildly up you are too nose heavy for most efficiency. Again a slight nose up
pitching is desirable
Ron Parigoris
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