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In judging - when should we
use CGT and when should we use ZLA?
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When the aircraft is
flying horizontal lines or curving, rotating or rolling
manoeuvres you should judge the aircraft on CENTRE OF GRAVITY
TRACK (CGT). |
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When we are judging
vertical or 45° lines up or down you should use the aircraft
ZERO LIFT AXIS (ZLA) |
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Note: CGT is
therefore used during the course of any rolls placed on vertical
or 45° lines. |
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For rolls placed on
a curve, the curved flight path must continue accurately during
the roll. |
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Tail piece....
Be aware that aircraft types whose Zero Lift Axis does not pass
centrally through the tail will appear to spiral
during a perfect roll - even though the ZLA is bang-on target.
The Pitts above shows what to expect. |
