egg changed the topic of #principia to: Logs: https://esper.irclog.whitequark.org/principia | <scott_manley> anyone that doubts the wisdom of retrograde bop needs to get the hell out | https://xkcd.com/323/ | <egg> calculating the influence of lamont on Pluto is a bit silly…
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<queqiao->
⟨PrinceZola⟩ does the physics of spinning objects still break with principia?
<queqiao->
⟨PrinceZola⟩ honestly im just having that old issue of spin stabilization again
<queqiao->
⟨PrinceZola⟩ the "amplitude of nutation" or whatever it is correctly called, just keeps growing as the rocket goes on
<queqiao->
⟨PrinceZola⟩ does even the smallest nudge during separation completely ruins your spin stabilization? can anyone show me a 3000km downrange RD-100/aerobee rocket that doesnt start spinning madly soon after separation?
<queqiao->
⟨Kirk (He/Him)⟩ ⟪PrinceZola⟫ does the physics of spinning objects […] ⮪ The physics of spinning objects works perfectly with Principia. It’s stock KSP behavior that’s broken
<queqiao->
⟨itsRyan⟩ Since Principia correctly models angular momentum including the intermediate axis (aka tennis racket) effect, it can be more challenging for some designs, but it's actually stock that's "broken"
<queqiao->
⟨egg⟩ I suspect the whole tennis racket/intermediate axis discussion is a distraction here, rather you are merely seeing that if you sufficiently molest a regularly spinning object (either aerodynamically, or by a rough separation), its rotation starts regularly precessing.
<queqiao->
⟨egg⟩ I believe I have said so earlier.
<queqiao->
⟨sichelgaita⟩ It would also be better for my blood pressure if every post on that topic didn't start with "physics break in Principia".
<_whitenotifier-1adf>
[Principia] eggrobin opened pull request #3673: Factor the barycentre calculations between the BarycentricRotating and RotatingPulsating frames - https://github.com/mockingbirdnest/Principia/pull/3673