With all due respect to Mr. Wurts, on some full scale competition
planes, the ASW-27 for example, it is not available to have full span
camber, but thermal flaps only, cruise, and full trailing edge reflex
(ailerons and flaps deflecting the same amount up). In the ASW-27 in
addition to thermal flaps you have a two position landing flap setting.
Also on unlimited class sailplanes it is often the practice to have tip
ailerons, (tiperons) coordinate with rudder, not aileron deflection
which will often put them in opposite direction deflections from the
rest of the wings trailing edge. Model R/C planes should not then have
their performance degraded by any perceivable amount by having
differential throws in flaps and aileron. I often couple ailerons and
flaps 30-40% as is also an option on several full scale ships.

Launch mode as described by Wurts may have different dynamics at play.


JD
Endless Mountain Models
http://www.scalesoaring.com
email: [EMAIL PROTECTED]
 

> -----Original Message-----
> From: George Voss [mailto:[EMAIL PROTECTED]
> Sent: Friday, March 25, 2005 6:24 PM
> To: 'Michael Lachowski'; [email protected]
> Subject: RE: [RCSE] Re: Programming tricks help
> 
> I was privy to a discussion between Joe Wurts and Jim Frickie a few
years
> ago.  The discussion concerned the position of flaps and ailerons
during
> launch.  Joe stated the flaps and ailerons should droop the same
amount to
> reduce the drag between the interfering surfaces.  It seems the same
would
> hold true for the thermal mode.  Shouldn't the flap and ailerons move
the
> same amount to keep drag to a minimum where the flap and aileron meet?
> George
> 
> -----Original Message-----
> From: Michael Lachowski [mailto:[EMAIL PROTECTED]
>  Re: Programming tricks help
> 
> 
> The other mix I often find missing is using the flaps as ailerons. The
> flaps should be moving with the ailerons at 30-50% of the aileron
travel.
> 
> If you get the ailerons and flaps moving together and put in elevator
to
> camber mixing, you will be amazed at how much nicer your model flies.
> 
> 
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