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Everything posted by Spanier
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Shouldn't be the ROUND-8 toroidal fuel tank more like a "cryogenic balloon" tank, then just "cryogenic".
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How should we get rid of Nuclear Waste?
Spanier replied to makinyashikino's topic in Science & Spaceflight
Yeah, that's right, but it's not nearly that concentrated like in HLW. Coal ash is about as radioactiv as the waste, thats created at the Uranium mines, the tailings of these are compareable to lignite-ash, or even more dangerous. Appart from the time-machine-thingie, it sounds totally plausible. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
Well, the Galilean Moons are also said to be in an 1:2:4 resonance, despite their longitude of conjunctions rotates with ~3°/d. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
So everytime, 3 bodies are in a 1:2:4 resonance with a non-fixed longitude of conjunction, the orbital period of the third body T3 = 2T2/(3-T2/T1) -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
You mean Callisto? Not excactly. The Laplace resonance is nearly perfect, the libration around 3 of the 4 resonance angles are so narrow, you can say, that there NEVER is a triple conjunction. But the forth is rotating through all angles, which means, conjunction can occure anywhere on Ganymedes orbit. From Wikipedia: The longitudes of the Io–Europa and Europa–Ganymede conjunctions change with the same rate, making the triple conjunctions impossible. Is this the reason for my equation to work? -
How should we get rid of Nuclear Waste?
Spanier replied to makinyashikino's topic in Science & Spaceflight
Uuuh, I had long and exhausting arguments about this topic. So here some facts: There are 300.000 tons of HLW worldwide, and each year we get 12.000 additional tons Deep geological repositories for current HLW must be save for at least 300.000 years (*) Current plans for disposal sites call for the waste being retrievable, so deep boreholes aren't considered Dumping the waste in the oceans can have unpredictable impact on the local (!) flora/fauna, and has been practiced in the North Sea It takes about 600.000 years for the fast-fission products of Pu239 to reach the same level of radiotoxicity of 300.000a old radioactive waste from current reactors It takes about 1.200.000 years for the fast-fission products of U233 to reach the same level of radiotoxicity of 300.000a old radioactive waste from current reactors Efficient fusion reactors aren't feasible with current technology, and even if we gain that in near future, it's very likely, it's way too expensive to be considered as a suitable power source (*) At least that's considered as "long enough" in Germany, even by the supporters of nuclear power plants The last two facts, I calculated myself, radiotoxicity is measured in Sv/kg. (Links: http://goo.gl/Wp85no http://goo.gl/pGILrz) So even if a deep borehole might be the safest option, all countries around the world producing this stuff, currently consider, that future generations might have a brilliant idea about what to do with that highly toxic waste. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
The point, where the moons conjunct rotates in space. That does not influence the shape of the orbits in any way. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
Since you are obvisouly not capable of looking up the correct values yourself, I do it for you know. T1 = 1.7691378 d T2 = 3.551181 d T3 = 7.154553 d A = T2/T1 = 2.00729474 B = T3/T2 = 2.014696801 2/(3-A) = 2.014696688 So is it coincidence or not. Maybe someone more qualified then SILLYchris can also answer? -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
The valueds I wrote here aren't the exact ones, I just wrote them from my memory, and I can't look them up right now. Just check them yourself on Wikipedia (A=~2.007) -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
The equation does hold, and that is what struggles me. The error is about 10-7. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
No, if you look to Wikipedia, the value isn't excactly 2 but 2.00069... for Io and Europa and 2.0014... for Europa and Ganymede. -
Moving longitude of conjunction of Jupiter's moons
Spanier replied to Spanier's topic in Science & Spaceflight
That wasn't my question, I knew that. I'm asking for the B=2/(3-A) connection. -
Since the longitude, where the conjunctions between Jupiter's inner 3 moons occure propagates in a retrograde orbit, the relation between the orbital period of Europa T2 and that of Io T1 is slightly greater than 2. But the relation between the orbital period of Ganymede T3 and that of Europa T2 is even bigger. After a bunch of random assumptions and calculations, I discovered, that the fractions T2/T1=A and T3/T2=B are in the following relation: 2/(3-A)=B Is this a happy coincidence or a condition for the resonance?
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What's your favorite Kerbal names?
Spanier replied to thereaverofdarkness's topic in KSP1 Discussion
Herman Kerman I once had a Scott Kerman with the Badass-Syndrom. -
Better Atmospheres Development Thread
Spanier replied to Thesonicgalaxy's topic in KSP1 Mod Development
Some lighting-weirdness with Kerbins cities and Gilly: -
PorkWorks dev thread [Habitat Pack] [SpaceplanePlus]
Spanier replied to Porkjet's topic in KSP1 Mod Development
BecausemB9 isnt "stockalike" and mostly broken. -
Kethane Pack 0.9.2 - New cinematic trailer! - 1.0 compatibility update
Spanier replied to Majiir's topic in KSP1 Mod Releases
Is this mod compatible with real fuels? -
TT NeverUnload - Vessel Unloading Preventer
Spanier replied to TouhouTorpedo's topic in KSP1 Mod Releases
Well, you can add the module to any part you want, but it will break the part, so you can't use any of it's functions, TTNeverUnload included. -
Better Atmospheres Development Thread
Spanier replied to Thesonicgalaxy's topic in KSP1 Mod Development
Is this mod compatible to the effects from Alternis, so the unlit side of bodies is still pitch black? -
Definitely Kerbin, not as a whole, but have you ever been to the slopes of K2 at night with the clouds mod and the visuals from Alternis? Dark, steep cliffs wrapped in fog and utter darkness. But on the other hand, landing on the top of one of these mountains in sunshine looks pretty awesome.
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[WEB APP] Ribbon Generator [1.1.2] [ABANDONED]
Spanier replied to Moustachauve's topic in KSP1 Tools and Applications
Do we get flags for the sun? I want to build a solar space station and use the new flag option. -
[1.1.x] CoolRockets! Cryo and Launch Particle FX
Spanier replied to sarbian's topic in KSP1 Mod Development
When I'm using RealFuels, does the mod recognize when I'm using non-cryogenic fuels or when a portion of the tank is filled with a non-cryognic fuel (oxidizer is on the top)?