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<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>Hi
Ken,</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>You're
right, it will.</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>The
subfin or strake should run from well forward of the stab, to the back of the
stab. Okay, right up to the tailwheel mount! While you are at it, add a ton of
side area!</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>By
making it more difficult for air to flow toward and then around the bottom
of the plane, the stab will see less airflow from the "top" that causes a
positive pitch.</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>This
only happens when the side of the plane is presented to the wind: let go of the
rudder, and the spillage around the fuse disappears. (At least it
changes)</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff size=2>That's
why Nat has fixed so many belly pitches, over the years, with a dorsal
(backside) strake, filling in the "hole" in the side area, in front of the
fin. </FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=375435321-30012006><FONT face=Arial color=#0000ff
size=2>Science experiment, anyone?</FONT></SPAN></DIV>
<DIV><SPAN class=375435321-30012006>
<FONT face=Arial color=#0000ff size=2>Dean</FONT></SPAN></DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Ken
Thompson<BR><B>Sent:</B> Monday, January 30, 2006 4:36 PM<BR><B>To:</B> NSRCA
Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] Trimming
question<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Hello Dean,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This is why I read all of the list's posts...I
like to learn new things. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The sub-fin would go where, under the stab or
closer to the nose? I would think the placement would make a huge
difference in the effect.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ken</FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=d.pappas@kodeos.com href="mailto:d.pappas@kodeos.com">Dean
Pappas</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, January 30, 2006 1:53
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Trimming question</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff size=2>Hi
Gang, Hi Ken,</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>The enswer probably lies in a combo of what Lance and Ron
offered.</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>How much is your buddy willingg to cut or add to fix the
problem.</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff size=2>A
ventral strake/subfin will be a great experiment, and I am sure that a bunch
of us would like to hear the results.</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>Raising the stab would be terribly invasive, and also
interesting.</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>Make sure the ship flies with a styraight elevator
first.</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>later,</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2>Dean</FONT></SPAN></DIV>
<DIV><SPAN class=312584818-30012006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of
</B>patterndude@comcast.net<BR><B>Sent:</B> Monday, January 30, 2006 1:44
PM<BR><B>To:</B> NSRCA Mailing List<BR><B>Subject:</B> Re:
[NSRCA-discussion] Trimming question<BR><BR></FONT></DIV>
<DIV>Ken,</DIV>
<DIV>Not always. In level flight the neg incidence will require up trim.
In KE flight, the tail has an increased weighting in the balance of forces
and this uptrim can be more than needed.</DIV>
<DIV>--Lance</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV class=signature id=signature>--<BR>District 6 AVP
<BR>www.aeroslave.com</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: "Ken Thompson"
<mrandmrst@comcast.net> <BR><BR>> Wouldn't negative incidence
cause it to push to the gear, not the canopy? <BR>> <BR>> Ken
<BR>> ----- Original Message ----- <BR>> From: "Lance Van
Nostrand" <PATTERNDUDE@COMCAST.NET><BR>> To: "NSRCA Mailing List"
<NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> Sent: Monday, January 30,
2006 12:40 AM <BR>> Subject: Re: [NSRCA-discussion] Trimming question
<BR>> <BR>> <BR>> > Not many responses to this one, but
here's my thought. The wing incidence <BR>> > is way negative and
the CG is aft. I got myself into that situation once <BR>> > and
didn't catch it for a while. Inverted flight was fine but the plane
<BR>> > was <BR>> > squirrely and the up elv trim was more
effective in knife edge than level <BR>> > flight, resultin! g in
canopy pull. <BR>> > --Lance <BR>> > <BR>> > -----
Original Message ----- <BR>> > From: "John Pavlick"
<JPAVLICK@IDSENG.COM><BR>> > To: "NSRCA Discussion"
<NSRCA-DISCUSSION@LISTS.NSRCA.ORG><BR>> > Sent: Friday, January
27, 2006 10:31 PM <BR>> > Subject: [NSRCA-discussion] Trimming
question <BR>> > <BR>> > <BR>> >> Ok here's a good
one. The owner of the L.H.S. asked me what I thought <BR>> >>
about <BR>> >> this and I couldn't come up with a good answer.
He has a Hangar 9 Ugly <BR>> >> Stik - the real big one. I
can't remember exactly what it's called. Guess <BR>> >> it
<BR>> >> has a gas motor in it. It's big. He says he has it
trimmed so it will fly <BR>> >> inverted with just a very
slight bit of down elevator (almost none). Ok, <BR>> >> so
<BR>> >> it's not nose heavy, maybe even a little tail heavy.
Now, when he flies <BR>> >&! gt; it <BR>> >> knife
edge (either side) it pulls severely to the canopy. I mean like it
<BR>> >> will fly a complete circle. It needs almost 3/4 down
elevator to fly <BR>> >> straight. It's beyond a mix - fix. He
also says that it has a bit of roll <BR>> >> couple when flying
level (not knife edge) but it doesn't pitch severely <BR>> >>
up <BR>> >> or down under these conditions. Any thoughts? I
guess you can rule out <BR>> >> C.G. <BR>> >> because
if anything it should pull to the belly considering how it's <BR>>
>> trimmed <BR>> >> to fly level upright and inverted. I
haven't flown it so I can't add too <BR>> >> much more. He
builds OK so I don't think there's anything way out of <BR>> >>
alignment, but again I haven't seen it yet so maybe there is. What
should <BR>> >> I <BR>> >> look for if I get my hands
on it to try and help him? <BR>> >> <BR>> >> John
Pavlick <BR>> >> http://www.idseng! .com <BR>> >>
<BR>> >> -- <BR>> >> No virus found in this outgoing
message. <BR>> >> Checked by AVG Free Edition. <BR>>
>> Version: 7.1.375 / Virus Database: 267.14.23/243 - Release
Date: 1/27/06 <BR>> >> <BR>> >>
_______________________________________________ <BR>> >>
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