#1
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An Odd Twist
I got to launch my Daedalus yesterday but did an odd corkscrew I haven't seen before.
I have a diagram of what it did, if it makes any sense. The nose always stayed pointed toward an imaginary apogee but the body (aft end) twirled around. I can only guess it was a borderline stability problem. Or maybe the large twin fins acted like ailerons. The bottom of the rocket was always pointed inward like it was gravitationally locked, like the Moon. |
#2
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Quote:
That's called "coning" or "pitch-roll coupling." It generally happens with long, thin rockets that are "over-stable." But, in your case, I think the cause is more complicated. A more-thorough description of the phenomenon is at: http://www.info-central.org/?article=124 -- Roger |
#3
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Because of the big nacelle/fins I had to put a bunch of weight in the nose. It seems that caused as much trouble as if solved...
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