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<DIV><FONT face=Arial size=2>I had one once, but I was able to cough it up after
enough beer.</FONT></DIV>
<DIV><BR>Bob Pastorello<BR>NSRCA 199 AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
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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=johnferrell@earthlink.net
href="mailto:johnferrell@earthlink.net">John Ferrell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 01, 2005 4:40
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Characteristics</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I have noticed my multi-axis autopilot has
developed a divergent <FONT face="Times New Roman" size=3>phugoid
lately.</FONT></FONT></DIV>
<DIV>refer to <A
href="http://www.flightlab.net/pdf/7_LongitudinalDynamicStability.pdf">http://www.flightlab.net/pdf/7_LongitudinalDynamicStability.pdf</A></DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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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=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob
Pastorello</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 01, 2005 2:47
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Characteristics</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Nat, what is the "S" axis?</FONT></DIV>
<DIV><FONT face=Arial size=2> And why should I solve loop
tracking?</FONT></DIV>
<DIV><FONT face=Arial size=2> My multi-axis autopilot does
that for me.</FONT></DIV>
<DIV><BR>Bob Pastorello<BR>NSRCA 199 AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </DIV>
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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=natpenton@centurytel.net
href="mailto:natpenton@centurytel.net">Nat Penton</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, January 01, 2005 1:24
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Characteristics</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Ray your outline of the variables affecting
loops makes sense. To solve the problem we could place a vane sensor ahead
of the fin and have automatic fin adjustment. It would not require a
servo and may eliminate the need for right thrust. Lets assign this
project to Bob Pastorello.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Now we need to address why pattern planes
pitch down in S and L yaw and pitch up when inverted.
Nat</FONT></DIV>
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