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Old December 13th 09, 06:44 PM posted to rec.aviation.soaring
Brian Whatcott
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Default Optimum CG Range

JJ Sinclair wrote:
CofG may be stated as a distance aft of a given reference station
which may be at (or in front of) the nose
OR
A percentage of MAC behind the wing LE
OR
A distance behind the Wing LE


The middle definition is probably the most fundamental, because there
is a known range of allowable CofG's in terms of %MAC which is

similar across a wide range of airframes

Brian W


Errrrr, not neccessarily so; The wing leading edge will be the zero
MAC point only if the leading edge of the wing is a straight line
JJ


Quite so, leading to the slightly strained specification of definition #2:
A percentage of MAC behind the wing MEAN LE station


What the devil is a mean leading edge? :-)


Brian W