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<DIV><FONT face=Arial size=2>The anhedral stab tips should be done like most
trainer wing tips, slaunched
<G>.
Nat</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=jnhiller@earthlink.net href="mailto:jnhiller@earthlink.net">J N
Hiller</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, April 21, 2008 3:45
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Annhedral
Stab</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN class=EmailStyle23><FONT face=Arial color=#993366
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Can
you tell me more about "stab tip treatment" and
why?<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle23><FONT face=Arial color=#993366
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Thanks.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle23><FONT face=Arial color=#993366
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Jim<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal><SPAN class=EmailStyle23><FONT face=Arial color=#993366
size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><![if !supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> <A
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">nsrca-discussion-bounces@lists.nsrca.org</A>
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Nat Penton<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, April 20, 2008 11:34
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> NSRCA Mailing
List<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re:
[NSRCA-discussion] Annhedral Stab</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN
style="FONT-SIZE: 12pt"><![if !supportEmptyParas]><![endif]> <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Anhedral creates
problems only for high yaw rate manuevers. It is difficult to do an inverted
spin - you can't get the nose up. Proper treatment of the stab tips solves
this problem,
however.
Nat</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<DIV
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<P class=MsoNormal
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face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">----- Original
Message ----- </SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
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face=Arial color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">
<DIV style="font-color: black">From:</SPAN></FONT></B><FONT face=Arial
color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> <A
title=jnhiller@earthlink.net href="mailto:jnhiller@earthlink.net">J N
Hiller</A> </SPAN></FONT></DIV><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT>
<P></P>
<P class=MsoNormal
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face=Arial color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">To:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><B><FONT
face=Arial color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Sent:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> Sunday, April 20,
2008 6:20 PM</SPAN></FONT><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><B><FONT
face=Arial color=black size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Subject:</SPAN></FONT></B><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> Re:
[NSRCA-discussion] Annhedral Stab</SPAN></FONT><FONT face=Arial color=black
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"><![if !supportEmptyParas]><![endif]> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><SPAN
class=EmailStyle21><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Thanks
Matt, as with any other design change it needs to be tried to understand the
effect. I always felt that the bottom running stab in knife-edge or the outer
stab when the fuselage is yawed is more effective than the other side and
dominate. In the old days I was able to balance knife-edge pitch by adjusting
one elevator up and the other down. When an annhedral stab is yawed it becomes
unbalanced resulting in a pitch force change towards the top of the fuselage.
If this were true it should also produce a slight roll with yaw. I will
probably never understand as much about pattern plane design as I would like,
I just try things. It either gets better or it gets worse and this is only one
of many design considerations.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><SPAN
class=EmailStyle21><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">OH
that rolling circle stuff makes my head hurt. An analog processor would
probably help or one about thirty years
younger.<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 39.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><SPAN
class=EmailStyle21><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">Jim
<o:p></o:p></SPAN></FONT></SPAN></P>
<P class=MsoNormal
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class=EmailStyle21><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"> <o:p></o:p></SPAN></FONT></SPAN></P></DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: black 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none">
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face=Tahoma color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of
</SPAN></B>rcmaster199@aol.com<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, April 20, 2008 12:43
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
nsrca-discussion@lists.nsrca.org<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [NSRCA-discussion] Annhedral
Stab</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Jim,</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Most would say that anhedral stabs are
hype......</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">I prefer to call them a viable
option for pattern models and here're my thoughts on the subject. First off,
fundamentally, they don't change how the wing is stabilized in pitch compared
to a flat stab...same physics apply. Anhedral area however is the resultant
of two component areas, horizontal which dominates and a vertical which
adds to the already eixsting vertical stabilizer area. It may be thought as
area added to the ventral side of the fuse without adding a subfin. This often
helps settle some unwanted thrust vector forces namely the much cussed and
discussed dredded pitch to belly with top rudder. Does it always work as
prescribed? Does anything in our sport ever always work as
prescribed?</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Rolling circles may be helped with
anhedral in the stab. When the anhedral angle is "just right", there is no
region during rotation (X degrees from horizontal) that completely blanks
out the stab as can happen with flat stabs. Does is do wonders? I don't think
so but it certainly does not hurt.</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">My new design will have anhedral in its
stab (7-8 degrees)</SPAN></FONT><FONT color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">Cheers,</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
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face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">MattK</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black"> </SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; MARGIN-BOTTOM: 12pt; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; MARGIN-RIGHT: 0in; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-margin-top-alt: 0in; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT
face="Times New Roman" color=black size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: black">-----Original Message-----<BR>From: J N
Hiller <jnhiller@earthlink.net><BR>To: NSRCA Mailing List
<nsrca-discussion@lists.nsrca.org><BR>Sent: Sun, 20 Apr 2008 2:01
pm<BR>Subject: [NSRCA-discussion] Annhedral Stab</SPAN></FONT><FONT
color=black><SPAN
style="COLOR: black; mso-color-alt: windowtext"><o:p></o:p></SPAN></FONT></P><PRE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: white; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><TT><FONT face="Courier New" color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></TT></PRE><PRE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: white; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><TT><FONT face="Courier New" color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black"><![if !supportEmptyParas]> <![endif]><o:p></o:p></SPAN></FONT></TT></PRE><PRE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; PADDING-LEFT: 0in; BACKGROUND: white; PADDING-BOTTOM: 0in; MARGIN-LEFT: 75.75pt; BORDER-LEFT: medium none; PADDING-TOP: 0in; BORDER-BOTTOM: medium none; mso-border-left-alt: solid black 1.5pt; mso-padding-alt: 0in 0in 0in 4.0pt"><FONT face="Courier New" color=black size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black">
<DIV id=AOLMsgPart_0_7ded5693-f244-4f19-bc40-e243e69250d4>Can I open a discussion on why some designs have an annhedral stab?<SPAN style="mso-spacerun: yes"> </SPAN>Was it to lower the effective flying height of the stab to reduce the wing<SPAN style="mso-spacerun: yes"> </SPAN>to stab vertical offset and knife edge belly pitch, or is there some other<SPAN style="mso-spacerun: yes"> </SPAN>reason?<SPAN style="mso-spacerun: yes"> </SPAN>Jim Hiller<SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>_______________________________________________<SPAN style="mso-spacerun: yes"> </SPAN>NSRCA-discussion mailing list<SPAN style="mso-spacerun: yes"> </SPAN><A href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</A><SPAN style="mso-spacerun: yes"> </SPAN><A href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target=_blank>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</A><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></FONT><FONT color=black size=1><SPAN style="FONT-SIZE: 9pt; COLOR: black"><o:p></o:p></SPAN></FONT></DIV></PRE></DIV>
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style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">
<DIV id=u8CA7135D40DB55A-17A0-487F>Get the <A
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style="FONT-SIZE: 12pt; COLOR: black">_______________________________________________<BR>NSRCA-discussion
mailing
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