The difference between static stability and dynamic stability probably. In other words, sitting on the launch pad it is stable. when interacting with the real world it becomes unstable. Without studying the file or getting into real deep, because I'm not on this forum anymore the usual suspect is the wind (tip off upon leaving the launch rod) or causing a shift in the CG CP relationship .

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Bernard J. Herman Ohio RLS

Starport Sagitta Rockets
email bherman@sagittarockets.com

NAR # 97971 SR

What's your idea on the best way to change Washington D.C.?
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We're looking for a few good Catos, please tell us about any you may have had. Survey of Anecdotal Malfunctioning Engines or S.A.M.E.