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<DIV><FONT size=2 face=Arial>Bill,</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Boy, I'd love to see those. Can you convert them to
an exportable file that we can download?</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>G.</FONT></DIV>
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<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
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style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=billglaze@bellsouth.net href="mailto:billglaze@bellsouth.net">Bill
Glaze</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">General pattern discussion</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, October 23, 2009 8:13
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Snap
Rolls</DIV>
<DIV><BR></DIV>
<DIV><FONT size=2 face=Arial>I'm sure that most, of not all, of you folks
think this subject has been beaten to death, and it has--almost.
But--</FONT></DIV>
<DIV><FONT size=2 face=Arial>After reading Jerry Budd's posting, and the
endorsement by Ron van Putte, I've been considering Jerry's postulate about
our airplanes not actually stalling the wing, for the factors he
mentioned. While it almost seems like heresy, both of these
aforementioned well-known R/C competitors are quite qualified to speak within
the boundaries of this subject.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Now, having taped many hours at the Nats, I have
been mulling over the subject of Jerry's posting, and I decided to put my
resultant DVD's on my TV, and just take a close look at these snap-rolls,
which I did. The TV is a large-screen (60") diagonal HD set, and when I
replayed these maneuvers, I got a surprising result. Appearances
close-up indicated visually to me that Jerry seemed to be spot-on correct,
probably for just the reasons mentioned by him; the airplanes seemed to be not
even close to a stalled condition. Realize that I had a huge advantage
over the judges; I was using from 20x to 30x (variable) magnification, and
viewing on the large screen with a very sharp picture was a further
advantage. I also had time to play and replay them at different speeds,
which I did ad nauseum. </FONT></DIV>
<DIV><FONT size=2 face=Arial>I was also impressed with how good the snaps
looked when filming; I could hear myself on the sound track saying things like
"impressive", "beautifully precise" and other superlatives, while I was
filming, and before I had a chance to inspect them with
slow-motion. Understand: they still looked good on the
screen, but:</FONT></DIV>
<DIV><FONT size=2 face=Arial>I found upon close inspection in slow motion many
examples of no discernable break, one example of a competitor using just a
small amount of up elevator before beginning rotation, then instantly relaxing
it. Many seemingly used no elevator at all, but used rudder, sometimes
in the roll direction, and at least one in the opposite direction of the
roll. One showed a very small amount of yaw at the end of the snap,
possiblly indicating a slight over-use of rudder; still no sign of
elevator. There was little or no noticeable "coning" as heretofore being
a qualifing factor in a snap. The rotation simply didn't show coning, in
nearly all cases. There were many different techniques used, and
some used seemingly different inputs in snaps for 45 deg. climbs,
descending lines, and level attitudes. Few of those I filmed seemed to
use any elevator at all. As a qualifier, all these contestants were
Master's and F.A.I., and, having a pretty good idea of who the high-risers
were, I generally filmed those who I felt would have a larger impact at the
podium at the end of the day. Not all the actors were the bright stars,
though; I had a good cross-section.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Having spent hours in this analysis, (just ask my
wife) I did come to one conclusion: even though these snaps looked
beautiful, and certainly must have pleased the judges, still and all they
varied from the rule book requirements, as I understand
them.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Now, I could think of a few ways to achieve the
control combinations required: ATV, Flight Conditions, excessively large
control displacements, etc. Just as I was trying to think how it was
handled, I very fortunately read Brian Hebert's interview with Albert and A.C.
Glenn. Apparently, I was a giant step behind what is going on.
(I'm used to that.) I suggest that to complement this essay, you turn to
the interview in the new Model Aviation; it's an eye-opener and ties in
nicely.</FONT></DIV>
<DIV><FONT size=2 face=Arial>I'm beginning to wonder if Lance van Nostrand's
and Dave Ramsey's statements concerning rules and maneuver descriptions
shouldn't be re-visited. Although judgement on that subject rightly will
be resting with other people than me..</FONT></DIV>
<DIV><FONT size=2 face=Arial>Thanks for your patience, both of you out there
who aren't asleep. In case you hadn't noticed, I'm very deeply
interested in Pattern.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bill Glaze</FONT></DIV>
<DIV><FONT size=2 face=Arial>AMA 2221</FONT></DIV>
<DIV><FONT size=2 face=Arial>NSRCA 2388</FONT></DIV>
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