I have been watching this thread for a while now.

The term "rough air" seems somewhat subjective. Review of the various
aerodynamic manuals in my personal library does not give me a clue to what
gust load is used in rough air limit calculations or its' relationship to
the V-n diagram.

I am sure there is a precise definition which is used in to determine
performance limits. Could anyone provide the gust load definition of "rough
air?"

Respectfully,

Wayne
http://www.soaridaho.com/Schreder