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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<_whitenotifier-1adf> [Principia] pleroy opened pull request #3643: Remove the coverage analyzer from the solution as it doesn't compile anymore - https://github.com/mockingbirdnest/Principia/pull/3643
<_whitenotifier-1adf> [Principia] pleroy closed pull request #3643: Remove the coverage analyzer from the solution as it doesn't compile anymore - https://github.com/mockingbirdnest/Principia/pull/3643
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<queqiao-> ⟨Benji⟩ Neighbor's cat starting to get used to our veranda.
<queqiao-> ⟨siimav⟩ _Our_, as in belonging to the cat as well.
<queqiao-> ⟨patrikcath⟩ pet him
<queqiao-> ⟨Vlood⟩ ⟪siimav⟫ *Our*, as in belonging to the cat as […] ⮪ i think it's the cat's veranda first, now
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<queqiao-> ⟨Clayel⟩ this channel should be renamed to #principia/cats
<queqiao-> ⟨Clayel⟩ * #principia-and-cats
<paculino> #cat's_principia
<queqiao-> ⟨Starmincer⟩ Princatia
<raptop> n-cat gravity
<raptop> alternatively, Principinya
<_whitenotifier-1adf> [Principia] eggrobin closed pull request #3641: Use the radius of the secondary system when there are multiple secondaries - https://github.com/mockingbirdnest/Principia/pull/3641
<queqiao-> ⟨PrinceZola⟩ does principia changes the dynamics of spin stabilization?
<raptop> Principia correctly implements the Джанибеков effect, anyway
<queqiao-> ⟨PrinceZola⟩ it feels like my rocket designs are suffering from a lot of precession even when spin stabilizing, feels weird
<queqiao-> ⟨PrinceZola⟩ ⟪raptop⟫ Principia correctly implements the […] ⮪ then how one would go about to spin stabilize their kick stage? how to design it?
<queqiao-> ⟨PrinceZola⟩ do i need a deep understanding in analytical mechanics? xP
<raptop> I don't think so, just make sure to avoid imparting spin on the intermediate axis?
<queqiao-> ⟨PrinceZola⟩ what is the intermediate axis?
<queqiao-> ⟨PrinceZola⟩ if its the single different from the other axis... then im screwed because thats the one pointing towards the desired angle
<queqiao-> ⟨PrinceZola⟩ perhaps having 4 instead of 2 spin motors would remove the intermediate axis?
<queqiao-> ⟨test_account⟩ Yes, this will help
<queqiao-> ⟨PrinceZola⟩ now its even worse lol
<queqiao-> ⟨test_account⟩ Then its not dzhanibekov effect but something else
<queqiao-> ⟨test_account⟩ Dzhanibekov is easy to recognize, it flips back and forward (given time)
<queqiao-> ⟨PrinceZola⟩ im at around 75km up when i activate the stage, there is like 0.1kPa of dynamic pressure so i really dont think its an aero issue
<queqiao-> ⟨test_account⟩ It may be that your spin motors simply have variance which leafs to wobbling
<queqiao-> ⟨test_account⟩ * leads
<queqiao-> ⟨PrinceZola⟩ probably
<queqiao-> ⟨PrinceZola⟩ i will try spinning the whole rocket then maybe its heavier weight will "absorb" the variance or something lol
<queqiao-> ⟨test_account⟩ If this is the kick stage, i would suggest to spin the previous stage before detaching the kick stage
<queqiao-> ⟨test_account⟩ Yes, exactly
<queqiao-> ⟨test_account⟩ This also improves dv of the kick stage
<queqiao-> ⟨test_account⟩ Spin motors are horribly heavy for what they do
<queqiao-> ⟨PrinceZola⟩ still nope xP
<queqiao-> ⟨PrinceZola⟩ i think it is the dzabhenikov effect...
<queqiao-> ⟨PrinceZola⟩ like
<queqiao-> ⟨PrinceZola⟩ its spin very off axis then it gets kinda centered and then off it goes again
<queqiao-> ⟨PrinceZola⟩ +is
<queqiao-> ⟨PrinceZola⟩ like it cycles between those two states basically
<queqiao-> ⟨PrinceZola⟩ if this is true then what? should i just make it like super stubby?
<queqiao-> ⟨egg⟩ Those screenshots are quite useless, since we do know what the angular velocity is.
<queqiao-> ⟨PrinceZola⟩ angular velocity is a like... 120 rpm~
<queqiao-> ⟨egg⟩ _velocity_. The vector (or bivector, rather). The axis, if you will.
<queqiao-> ⟨egg⟩ A static image is useless to show the axis along which something is spinning.
<queqiao-> ⟨egg⟩ I cannot tell from the screenshot whether the thing spins along its long axis or end-over-end.
<queqiao-> ⟨PrinceZola⟩ yesyesyes
<queqiao-> ⟨PrinceZola⟩ stubby worked tho
<queqiao-> ⟨PrinceZola⟩ but i will try again the long boi
<queqiao-> ⟨kingparity⟩ i can’t wait for the new reference frame in.. what.. 4 days? assuming it’ll be in the next update