Interstellar
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 Joined
 Feb 28, 2018
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I've been designing a simple one stage rocket with OpenRocket, which allows the user to design and simulate their designs. I was always told that a general rule of thumb for a rockets stability is that the center of gravity should be 12 calibers above the center of pressure. With this rule applied to my model, in the simulation the rocket violently pitches in an oscillating motion, but when the stability margin is less than one but greater than zero the rocket is semistable (still has stability issues but they are reduced). Is this the result of a flaw in the simulation or... ?
model0.png  Contains design of rocket with stability margin of 0.193 cal
graph0.png  Graph containing simulated flight results with stability margin of 0.193 cal
model1.png  Contains design of rocket with stability margin of 1.55 cal
graph1.png  Graph containing simulated flight results with stability margin of 1.55 cal
model0.png  Contains design of rocket with stability margin of 0.193 cal
graph0.png  Graph containing simulated flight results with stability margin of 0.193 cal
model1.png  Contains design of rocket with stability margin of 1.55 cal
graph1.png  Graph containing simulated flight results with stability margin of 1.55 cal
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