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<DIV><SPAN class=323240221-29122004>After re-reading the post, it occurred to me
I should clarify:</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>I was writing about what I thought a good
standard might be.</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>For right now, the book is it, and as Bob
pointed out, there is no specific track downgrade.</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>Anyone have an IAC judges' guide handy? I'm
curious.</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>By the way, the full scale guys do horrible
things to snaps, including completely unstalling the plane (particularly during
consecutive snaps).</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>That don't make it right!</SPAN></DIV>
<DIV><SPAN class=323240221-29122004>Archie has a good point, not only
does the standard need to be better nailed down, but some people may
never be trained to "see fast". </SPAN></DIV>
<DIV><SPAN class=323240221-29122004>Add in some "tired from 4 hours in the
chair" and you have mush.</SPAN></DIV>
<DIV><SPAN class=323240221-29122004></SPAN> </DIV>
<DIV><SPAN class=323240221-29122004>This is a good discussion!</SPAN></DIV>
<DIV><SPAN class=323240221-29122004><FONT
face="Times New Roman"></FONT></SPAN> </DIV>
<DIV> </DIV>
<DIV>Dean Pappas <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> </DIV>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On Behalf
Of </B>Dean Pappas<BR><B>Sent:</B> Wednesday, December 29, 2004 1:15
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> RE: Displacement
during snap rolls (was Why is it so quiet?)<BR><BR></FONT></DIV>
<DIV><SPAN class=217444617-29122004>Hi All,</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>before I crawl back to the lab ... and see
what's on the slab ...</SPAN></DIV>
<DIV><SPAN class=217444617-29122004></SPAN> </DIV>
<DIV><SPAN class=217444617-29122004>While I agree that some displacement is
inevitable, I wouldn't want to see a rule that says that if you don't see
any, then it's not a snap.</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>The very best high energy snaps will
displace so little that it will be really hard to say that it's
there.</SPAN></DIV>
<DIV><SPAN class=217444617-29122004></SPAN> </DIV>
<DIV><SPAN class=217444617-29122004>1) My guess would be that most really
good snaps probably displace about 1/2 wingspan, both up and to the
side.</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>Gravity will possibly kill any evidence of
the UP part. Try doing an inside snap from inverted, or try a snap from
knife edge. You'll see the UP displacement! </SPAN></DIV>
<DIV><SPAN class=217444617-29122004>2) As the elevator throw is reduced, from
that needed to do a good snap, the airplane displaces worse and worse, as
it takes longer for the plane to stall deeply enough, to make little enough
lift to continue changing the airplane's course appreciably.</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>3) If the elevator throw is further
reduced, the displacement goes away! Hmm.</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>4) Leading the elevator reduces the
necessary amount of throw, for a good snap. </SPAN></DIV>
<DIV><SPAN class=217444617-29122004></SPAN> </DIV>
<DIV><SPAN class=217444617-29122004>Here's the aesthetic question behind the
argument:</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>Do we all agree that when you see a snap
with an "in your face" break that it really is a thing of beauty?</SPAN></DIV>
<DIV><SPAN class=217444617-29122004>Or do some of us think it's untidy, and
not"on a line"? I had a judge ask me (back in '91) "What's with the twitch
before the snap?"</SPAN></DIV>
<DIV><SPAN class=217444617-29122004></SPAN> </DIV>
<DIV><SPAN class=217444617-29122004>I'm as confused as anybody. I guess that's
as good a way to start the new year as any.</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>
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