Chip

[Karl G. Mueller]

Dean,

Regarding as much fin below as above the thrust line: have a look at "Leo'
secret plane" at Zivko Aviation's website.

Karl G. Mueller
kgamueller at rogers.com

----- Original Message ----- 
From: "Dean Pappas" <d.pappas at kodeos.com>
To: <discussion at nsrca.org>
Sent: Friday, March 04, 2005 9:43 AM
Subject: RE: Chip


Hi Jay,
Funny you should ask. Hey Nat, got any pictures of the old UM2?
The answer, short of showing you a picture of one of Nat's old designs is to
build a plane that is symmeterical around the thrustline. It's gonna look
fuunny but, "chins are bad, Hmmkay".
You want to center the fin and ruder area heightwise on the thrustline, too.
If you can design a plane with nose area above the spinner and almost none
below, you might get there.
Some EU1-As trimmed with almost no right thrust, mine was one of those.
Brown had a Phoenix 6 or 7 that had a tiny fraction of a degree of left
thrust, as I recall.
Even if you don't entirely eliminate the need for side thrust, if you get it
under a degree and a half, the compromise and unwanted dog-tracking gets
much much better.

Of course, electrics don't need chins! That's probably where the funky
anti-Kirk Douglas chin on the Onyx comes from.

Dean Pappas
Sr. Design Engineer
Kodeos Communications
111 Corporate Blvd.
South Plainfield, N.J. 07080
(908) 222-7817 phone
(908) 222-2392 fax
d.pappas at kodeos.com


-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Jason
Sent: Thursday, March 03, 2005 9:52 PM
To: discussion at nsrca.org
Subject: RE: Chip


Dean,

What's this cure look like?

Jason

-----Original Message-----
From: Dean Pappas [mailto:discussion-request at nsrca.org]On Behalf Of Dean
Pappas
Sent: Thursday, March 03, 2005 7:40 PM
To: discussion at nsrca.org
Subject: RE: Chip


Hi Nat,
It's the push to level inverted from a down line: left rudder is required to
go straight.
It's worse there than anywhere else, but the same effect can  be felt in
many places.

The cure is to design planes that don't need right thrust.
Dean


-----Original Message----- 
From: discussion-request at nsrca.org on behalf of Nat Penton
Sent: Thu 3/3/2005 6:25 PM
To: discussion at nsrca.org
Cc:
Subject: Chip


When Chip was talking about throt/rudder mix he was also talking about a
problem with inverted exit from a vertical downline. Could somebody please
explain the problem ?
                                       Nat
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