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<DIV>Great description Earl. (The car skid analogy works nicely)</DIV>
<DIV>All of this is also in basic agreement with current judging seminar information,</DIV>
<DIV>the rule book, and the essence of the old NSRCA VHS Judging tape.</DIV>
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<DIV>Ron Lockhart</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "Earl Haury" <ejhaury@comcast.net> <BR>
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<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>
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<DIV><FONT face=Arial>Jim</FONT></DIV>
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<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>
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<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>
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<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>
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<DIV><FONT face=Arial>Earl</FONT></DIV></FONT></DIV></BLOCKQUOTE></body></html>