"Real" solar system rockets

[pclaurent]

Does anyone in this community use a realistic solar system model, or am I the only one? There are several realistic solar system models available including the earth, moon and planets from Mercury to Neptune, but I find that just about every rocket model in the workshop is designed to work exclusively with the base system (Droo).

The difference between a "Droo compatible" rocket and a rocket capable of operating in the real solar system is essentially its DeltaV. To carry out a lunar mission the "Droo" rockets available in the workshop have about 10 or 12 km/s of dV (it is the case for example of the various models of Saturn-V). To do the same thing in the solar system I estimate that you need about 80 km/s (which is obviously not realistic, but we have no choice, otherwise we don't even reach the low orbit). I made my own rocket model to do this kind of missions and it works well after cheating a bit on the power of the engines and even more on the mass of the different components.

So my question is twofold:
1/ Did I not understand anything about how to use the realistic solar system models available in the workshop?
2/ If not, do you know a place where to find rockets able to work properly in the solar system? (I would love to get a Saturn-V of this kind).

[toinkertoy]

So I’m gonna guess you’re using the RSS System by HyperPatch? It has the actual planets in our solar system but also seems that system is actually scaled much larger than the Juno system (more like our actual solar system is). So with longer distances and planetoids with larger masses no doubt it’s gonna take a lot more energy to get to places!

I think what you are seeing is a culmination of multiple factors:

1. The SR2 community seems to be either pretty small at the moment or just a very quiet one where most players don’t upload rocket designs or post on the SR2 community site. Remember on the community site it takes ‘points’ just to even upload a profile image to your account so many just post crafts for the purposes of getting those ‘points’ and the quality of them are not the best!

2. Most people sharing crafts are using the default Juno system, I can tell by the images they attach with the uploaded crafts. There may be a good number of players using the realistic solar system as you are but they’re either in the minority or they’re the very quiet players that aren’t active on the SR2 community page or both!

3. I assume most players build their own launch vehicles as I do and do not share them for various reasons. There seems to be only 14 craft designs that have over 100 downloads from other players which doesn’t seem like a lot to me. What I’m trying to get at is, it’s quite possible most players play independently without ever uploading or downloading crafts from the site.

I’d recommend you inquire about this on the simplerockets.com site itself. it’s not by any means the most active community I’ve ever seen but it is more active then the SR2 discussions here on Steam.

[pclaurent]

@toinkertoy: Thank you, you confirm what I thought: very few users change the planetary system for the "real" one. I just modified a great Saturn-V model (Apollo 11 Mission - True Scale Replica) by playing with the masses of the different components and also changing the autopilot a bit. It works very well now in RSS, even if it's a bit of work.

What disturbs me a bit is that, apparently, SR2 uses fake masses (if only internally) to match the Droo system, and that's why realistic rocket models (Soyuz, Saturn, SLS...) running on Droo don't work properly when taking off from earth. If this is still the case in the final version, I will continue to build or modify ships and rockets for the RSS. As I start to have several, I may put together a special directory for the community.

[toinkertoy]

Yeah I think what they did was they scaled distance/volume 20% and kept mass and atmospheric pressures the same as the actual solar system. I don't know why exactly they did that especially with there being a time warp option but maybe to reduce launch times and increased frequency of launch windows.

but most of the games like this weather it's Kerbel or Spaceflight Sim do this as well so I don't expect that to change (also it isn't mentioned in notes for the upcoming 1.0 version)

[toinkertoy]

Ahh you are missing something!

https://www.simplerockets.com/Mods/View/32233/Realistic-Engine-Overhaul

Realistic Engine Overhaul: it modifies the in-game engines to work better when using the RSS system. maybe that'll help you!