I hadn't heard of this technique before, but it makes sense. It sounds like a simple way to prevent an unfavorable spanwise load distribution and tip stall at really low speed.
Tapered wings tend to push stall initiation out to the tip. To counter this, washout can be used to unload the tip. My 360 has 2 degrees washout. Deflecting an aileron will defeat the effect of washout and will again promote tip stall. Lowering flaps to the same angle as the aileron throw unloads the tip to the point where full aileron deflection won't produce a tip stall.
Chris Zavatson
N91CZ
360std
From: Dico Reijers <dico@internetworks.ca>
To: lml@lancaironline.net
Sent: Saturday, August 10, 2013 8:47 PM
Subject: [LML] Re: Flaps on take-off?
Hi All,
There isn't a particular reason I don't want to use flaps other than I don't like the "sinking feeling"... but I will take a look at Bob's suggestion on how to slow that down. I was also taught the "deflect the ailerons and put the flaps down to that point" which I guessed was about 15 degrees or so. I see here that its actually 20 degrees....
-dr
--
Regards,
Dico Reijers
InternetWorks Ltd.
300 University Avenue
Charlottetown
PE, C1A 4M4
902-892-4671 (T)
888-368-9484 (F)
http://www.internetworks.ca/
http://www.apartmentspei.com/