Sarnus II-A
by gc1ceo
uploaded 2016-12-11
mod ship
#sarnus #saturn #apollo


  • Type: VAB
  • Class: ship
  • Part Count: 67
  • Mods: 8


  • Bluedog DB
  • Octosat
  • ProbesPlus!
  • Procedural Parts
  • RLA Stockalike
  • SETI-ProbeParts
  • TweakScale - Rescale Everything!
  • TweakableEverything

Successful missions with the Sarnus I, I-B, and V inspired engineers to come up with variant Sarnus launcher that could continue the high success rates of their predecessors which is what led to the Sarnus II-A. It combines the mission profiles of the Sarnus I-B with an extension of sending manned missions on Munar and Minmunar orbital missions at a fraction of the cost and weight of the Sarnus V. The weight between the Sarnus V-A8 and the Sarnus II-A, performing the same mission, is a 60% reduction while the the cost reduction is nearly 33%.

The first stage combines aspects of the Sarnus' first and second stages by mounting downgraded versions of the first stage’s engines with the second stage’s fuel tank dimensions and instruments. This makes the first stage, while still very powerful, far easier to manage and not requiring the fairly vertical ascent profile of the Sarnus V. It should get your payload to a desired parking apogee of 100km by itself then afterwards should be ejected around 50km along with the fairings. The escape tower, no longer needed, should be ejected after 60-70km and the second stage should kick in to circularize your orbit.

The second stage will also act as your booster into TMI (Trans Munar Injection) trajectory with enough for either the Mun or Minmus and, if you are creative and highly efficient, enough for a interplanetary flyby to Eve although this is strongly not recommended for any manned missions. The stage’s engines also have liquid hydrogen which slowly depletes over time so isn’t very useful for waiting on distant transfer windows.

The craft provided is the Kane 11-3 as outfitted in a similar to my Sarnus-V-A8’s mission profile with a sub satellite that can optionally be launched and acts as a transmitter buoy.

Built in the VAB in KSP version 1.2.2.

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