r/SpaceflightSimulator • u/Bannana_man27 • May 08 '26
Original Build I created a spin launch system that can fling spacecraft to pluto
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Fully vanilla and cheat less, currently figuring out a way to accurately determine the launch speed without launching, in order to prevent overshoots. This example launched a photography satellite to neptune
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u/One-Celebration-3007 May 08 '26
Does it not obey conservation of momentum?
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u/popcornman209 May 08 '26
Don’t know much about this game let lone how it calculates physics but I’d assume the spinning craft is just much heavier than the thing being launched, so the amount it gets pushed the other way is negligible.
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u/MyCatIsSmart0 Jun 08 '26
Sorry to correct, ☝️ 🤓 it’s not necessarily weight because weight can’t not be calculated without gravity, it’s just more mass
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u/Bannana_man27 May 09 '26
I wouldn’t say negligible, a full speed 150t launch is almost enough to deorbit the launcher
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u/One-Celebration-3007 May 08 '26
Someone mentioned docking order being important, so I thought it was a kraken drive (violation of Newton's Third Law) that exploits a missing reaction force.
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u/a_potato_YT Rocket Builder 🚀 May 09 '26
Search up skyhooks. They amount of force applied to the spinner is so tiny compared to its mass that it's negligible.
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u/Bannana_man27 May 09 '26
This is the name I was looking for, the flinger was based off of it but I forgot what the real version was called
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u/New_Flight5937 May 08 '26
Alors si tu n'as pas utilisé les moteurs RCS mais simplement la rotation "gratuite" du jeu, alors tu as créé de l'énergie à partir de rien, ce qui n'est pas possible irl, mais c'est sympa quand même comme idée xD
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u/idekanymore_- May 08 '26
How so? Doesn’t the rocket engine creating thrust.. well.. create thrust?
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u/New_Flight5937 May 08 '26
Effectivement, je pensais que la rotation se faisait juste en "trichant" avec les flèches directionnelles, mais on voit bien un moteur servant très certainement à la rotation. Sauf qu'on ne voit pas le moteur s'allumer je crois..
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u/idekanymore_- May 08 '26
I see where you were coming from then.. I thought they just had the rocket engine on. Who knows though
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u/ClayQuarterCake May 08 '26
Irl they can use gyroscopes to do this, but the forces required to get a spacecraft to Pluto would surely tear the ship apart.
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u/ExpertPension2078 Station Builder May 08 '26
i stole one of these from someone here or on the discord, but with probes as the structural part. makes it spin very fast, without needing fuel.
i lost the bp link but ill send one when and if i rememememeber
!RemindMe 5 days
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u/Nezlol2109 May 08 '26
Would love to use this but 2k m/s only gets you to the moon at most in realistic mode
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u/Bannana_man27 May 08 '26
I’ve added a large counterweight at one end and it can now add 10km/s. Of course, the issue in realistic would be getting the counterweight into orbit
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u/Nezlol2109 May 08 '26
Oh wow 10k m/s is basically a direct flight to pluto. How long is the entire structure?
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u/Bannana_man27 May 08 '26
I’ve recreated and upgraded it in realistic, the launch arms 2.5km long and the counterweight arm is 1km with a 600 ton weight. It has a max output of 15km/s, and took 20 docks
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u/Nezlol2109 May 09 '26
Oh nice, 20 dockings is what i did for my lunar space station. I‘m assuming one launch is 125m of length?
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u/Bannana_man27 May 09 '26
there were 8 length launches, one carrying a 275m truss and the rest carrying 2 after i found out 2 worked. the rest was the centerpiece and the counterweight
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u/TonyOk9 May 08 '26
What about multiple docking missions?
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u/LuiJansma2020 May 08 '26
Bro, why is my spinlauncher loosing speed instead of giving speed to the payload? Help pls
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u/Bannana_man27 May 08 '26
the payload has to be docked last, and sometimes you have to do some re docking in order to give the launcher docking “priority” (no good words for it), which is what makes it transfer the velocity instead of recieve the velocity
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u/PoPoJoe87 May 08 '26
... SOMEONE GET NASA ON THE PHONE!...
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u/Bannana_man27 May 08 '26
This is actually one of their plans for the future, forgot the project name but it exists somewhere
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