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Don:<br>
Very lucid explanation. Anything I can do to help try to correct it,
I'll do. Just let me know. Bill Glaze<br>
<br>
Don Ramsey wrote:<br>
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<div><font size="2">OK, here's my thoughts on heading and track.
They are very different terms. Track is the path of the model over the
ground. Heading is the direction the nose is pointed. With no wind,
heading and track are the same. The downgrades for some turnaround
maneuvers are absolutely incorrect when there is the statement, "Model
heading does not finish exactly opposite direction of entry." </font></div>
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<div><font size="2">Let's take an example:</font></div>
<div><font size="2">Say the course parallel to the flight line is
north-south (360 or 180 degrees). Assume the 180 degree heading is
from left to right. With no wind, if the model is flying parallel to
the flight line the heading and track will be 180 degrees from left to
right. Now assume an in blowing wind that requires a 15 degree
correction to maintain a path parallel to the flightline. Remember the
track of the model must be wind corrected to track parallel to the
judges. The heading is now 165 degrees but the track is 180 degrees.
The model is crabbed into the wind 15 degrees with the wings level as
required by our regs and the nose is pointed away from the pilot. Now
assume you do a half loop as a turnaround. The opposite heading to 165
degrees is 345 degrees. And that heading points the model into the
flightline not away as would be required for wind correction. How many
judges would award a perfect score if the model was pointed into the
flightline when an opposite correction was required? These mis-stated
downgrades in the regulations have been ignored for years (at least I
hope they have). Substitute track for heading and the model is now
required to exit the half loop on an exact opposite track. In other
words, parallel to the flightline entering the maneuver and parallel to
the flightline on exit.</font></div>
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<div><font size="2">Don</font></div>
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<div><font size="2">PS: On all modern jetliners the NAV display has
pointers for both heading and track and they are seldom the same in the
air.</font></div>
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