----- Original Message -----
From: "Dan Schaefer" <dfs155@adelphia.net>
Sent: Thursday, January 13, 2005 1:30 AM
Subject: Re: Guys, again...


> Well, I waited a couple of days to see whether anyone would respond to
Walt
> Dodson's post recommending that someone develop drooping ailerons for the
> IV-x. I'm surprised that one of our resident aerodynamicists didn't pick
up
> on this one.


Salutti tutti, anche Dan,

..thought about...then thought not.

A) complexity, that is a mixing box to deflect ailerons down with flaps.
More things to go wrong, more weight, more expense.

B) aileron chord is only 0.16C,  very narrow chord, not a huge gain.

C) only 14 degrees of down aileron to begin with. Limited space in the wing
trailing edge cove for extending  down aileron travel, possible to do by
removing aileron balance weights to the 100% unbalanced condition but don't
think that's so desirable!

D)  then a consequent lack of aileron power with reduced aileron deflection
remaining for roll control. When you need it most at slow speeds in wake
turbulence. Ask Jim H.

E) regain aileron roll control power with spoilers?....reducing wing lift
and defeating the original purpose of installing flaperons!

F) See page 43, "M.A.D." Vol I, second para. "the appeal of using flaperons
is very high for the amateur. However, during landing when the flaperons are
deflected for landing the need for lateral control is paramount and you will
find you have run out of aileron control since your ailerons are being used
as flaps. Separate the flaps from the ailerons"  Good enough for Martin H,
good enough for me.

G) Get your own copy of "M.A.D." vols I & II.

H) no I don't get a commission for each copy he sells.

ciao,  Roberto d'Italia.