10-03-2011, 02:05 AM
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Forest Sprite
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Join Date: Dec 2006
Location: Back Up in the Woods
Posts: 3,657
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People who are familiar with RockSim know that it cannot handle either tube fins or ring fins, yet many perfectly stable tube-finned and ring-finned rockets have been designed and built in the past 53 years. RS is a program that applies a set of equations to approximate the static and dynamic stability of a rocket design. Stability equations are approximations, not absolute truths. They have their limitations and problems and are still unable to accurately model the fluid dynamics of certain shapes. Anyone who views simulation results needs to understand that.
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Mark S. Kulka NAR #86134 L1,_ASTRE #471_Adirondack Mountains, NY
Opinions Unfettered by Logic • Advice Unsullied by Erudition • Rocketry Without Pity
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