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<DIV><FONT face=Arial size=2>EXCEPT that the manuevers must APPEAR to have 45
deg, or 60, or 90 - whatever - as this is judged by the viewers PERCEPTION of
those angles.</FONT></DIV>
<DIV><BR>Bob Pastorello<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>
<BLOCKQUOTE dir=ltr
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=wgalligan@goodsonacura.com
href="mailto:wgalligan@goodsonacura.com">Wayne Galligan</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, August 21, 2004 9:30
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Some Diagrams</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Exactly Ted...</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Like when doing a 1/2 Cuban eight on the ends in
Intermediate. The 45 degree line will appear to be steep if it is
done at 45 degrees. When done to look right the angle will be shallower
and the plane will also finish the maneuver closer to center depending on how
far out the maneuver was started. </FONT></DIV>
<DIV><FONT face=Arial size=2>OR the figure 8 on center. The new square 8
in Master is going to be an interesting one to judge too.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good points and something that should be
discussed in judging seminars.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wayne Galligan</FONT></DIV>
<BLOCKQUOTE dir=ltr
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=tedsander@comcast.net href="mailto:tedsander@comcast.net">Ted
Sander</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, August 21, 2004 8:26
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> RE: Some Diagrams</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Very interesting
Bob! A few years ago I was messing around with a 3D animation program
(Bryce 3), and tried my hand at making a clip showing a plane tracing out a
basic loop while following a “ribbon in the sky” – ie, the path looked like
those shown in the maneuver descriptions in the AMA rule book. It
allowed for perspective effects, placement of viewpoint and all the other
usual stuff a 3D program can do. So, on to my point: When I
mathematically made the loop perfectly round, it had a distinct egg shape to
it when the view point was moved from the same level as the center of the
radius, to a more typical 5 ft from the ground, looking up. In order
to get a loop that looked round from a typical judge/pilot position, I had
to squish it from the top a fair bit – indicating to me that as we fly our
planes over the top, it’s not enough to keep the radius consistent, we
actually have to pull harder on the top side, to keep everything looking
right – in other words, we don’t actually fly a true constant radius loop,
because of perspective effects. Makes it all so much harder than just
keeping airspeed and angle of attack constant – because we have to vary the
shape to make it look right. While I didn’t go back to look at other
maneuvers in more detail, it has always stuck with me that this effect also
rears it’s head everywhere else too. Kind of the visual version of the
upwind/downwind debates – so much depends on the frame of reference.
Would be interesting to hear others take on this subject……</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Ted
Sander</SPAN></FONT><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"> </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Bob Pastorello<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, August 17, 2004 6:14
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> NSRCA<BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> Some
Diagrams</SPAN></FONT></P>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">After getting some feedback
about geometry, I thought I'd draw out a few of my more problematic
ones. They may help you, too....</SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A
href="http://www.rcaerobats.net/ManueverDiagrams.htm">http://www.rcaerobats.net/ManueverDiagrams.htm</A></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><BR>Bob Pastorello<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></SPAN></FONT></P></DIV>
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