One thing I always found when playing ksp was a delta-v map. I was just wondering if someone was currently working on such a thing
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75 jacksawild
@eonn44 IIRC to calculate the delta v for hohmann transfers to other bodies orbiting the sun you use the vis viva equation and solve the series of two body problems. Droo, Sun and Target. To do this we need the SOI radius of the planets for a patched conics estimation and I'm not sure where to get this ouside of the devs telling us or us experimenting. I believe it was experimentation which got it done in KSP.
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112 eonn44
after digging around, I found what I believe to be the planets' radii in the file location \AppData\LocalLow\Jundroo\SimpleRockets 2\UserData\SolarSystems_default_
from there I found the planets' radii, orbits, atmospheric information (although no height of the atmosphere, but I tested that height to be about 60k up thanks to the "you can't timewarp in atmosphere")
here is some of the information on droo for one:
surface gravity: 9.798
radius: 1,274,200 meters
mass: you have to calculate this one, but it's 2.383561897×10^23using the formula F=(G*M_p*M_2) / (r^2) this simplifies down to g = (G*M_p)/(r^2), then you solve for M_p M_p= (g*r^2)/G where: M_p = mass of planet g= gravitational acceleration (9.798) r= radius of the planet (1274200) G= newton's gravitational constant (6.674×10^ -11)
I retrieved this from https://hypertextbook.com/facts/2002/SamanthaDong2.shtml if I made a mistake in my math here.
here is a link to a graph I made in desmos to help calculate this https://www.desmos.com/calculator/wmh0dhdu57 -
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75 jacksawild
Is there any planet info around? Orbits, radii, mass, atmospheres?
I guess I could dig around in the files.
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@eonn44 Droo's atmosphere is actually a little over 100KM up. However, going above 60KM during Re-entry is not super effective anyways.