<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.6000.16546" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV>
<DIV><FONT face=Arial size=2>Earl... this is a post I was going to
send yesterday also. Kind of supports what your saying.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Seems if it really was a good snap that the
airplane would naturally be slightly off track at the end of the snap from the
original heading. SO... in theory... if the airplane was right on track
after the snap then it must of been either 1) cheated on the entry or
exit or 2) not really snapped.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wayne Galligan</FONT></DIV></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=ejhaury@comcast.net href="mailto:ejhaury@comcast.net">Earl Haury</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">Discussion List, NSRCA</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, October 23, 2007 7:26
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] Judging Snaps
& spins II</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial>
<DIV><FONT face=Arial>Posted this as a reply yesterday but it got snagged as
too long with the ongoing thread attached - started a new thread.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Jim</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Don't think that'll work very well. Let's take the
analogy of a car moving in a straight line slowly - turn the steering quickly
and the car will turn - changing "track". Do the same thing at high speed and
the car will skid - track stays mostly the same and only attitude changes.
Entering a snap is similar - establish a "skid". In both cases there will be a
minimal departure from the original line until "traction" is lost and the skid
occurs. </FONT><FONT face=Arial>Consider that the faster the pitch input
the less AOA increase will be needed before rudder application. This is where
we get into trouble trying to define a "break" into a snap, some visualize
this as needing to be huge while, in reality, it may only be a few degrees.
</FONT></DIV>
<DIV> </DIV>
<DIV>Also - with regard to the departure from track before the "skid". F3A
rules require a "separation from the flight path" and AMA rules allow it
"track closely maintains the flight path". Numerous things will define the
amount of "separation" including rapidity of pitch / yaw, mass of
airplane, wing loading, etc. The separation may be a few inches to a couple of
feet and is not to be downgraded as long as the aircraft "closely maintains"
track. So - if the snap (skid) progresses more or less parallel to but
slightly offset (maybe in both pitch & yaw) it's not only OK, but a pretty
good indicator that the snap isn't an axial roll.</DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Use the description to think through set-up and control
inputs. Recognize that a properly done snap entry takes only a fraction of a
second (if you have time to see exactly what's going on you'll be getting
downgrades for track changes). With the proper set-up and practice a snap
entry can be perfect almost every time - that just leaves the exit to deal
with. Finish wings level and enjoy the 10!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Earl</FONT></DIV></FONT></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR />
<BR />
<HR />
<BR />
<BR />
<BR />
Internet and Web Mail supplied by Texas Air Net.<BR />
Texas Air Net can be reached at postmaster@texasairnet.com<BR />
or<BR />
http://www.texasairnet.com<BR />
<BR />
</BODY></HTML>