ACS STTO Version 3
by Redacted
uploaded 2019-06-28
mod spaceplane
#Unmanned #SSTO


An unconventional SSTO that uses a combination of ACS thrusters and Nuclear Air-Breathing engines. Can easily lift heavy (Space station parts) to high orbit (500km +)

What’s remarkable is that while in the atmosphere, this craft uses no fuel (liquid) until the final push to orbit. Which by that time, it’s already moving 2000 - 2400 meters per second. The combined engine and thruster output are over 3500kn (with cargo) so pushing to orbit is pretty easy.

Flight notes: Quickly push up above 7000m (10 degrees) then slowly level out as your altitude / speed increases. Take slow steady turns (as needed) and be aware that Pitch control isn’t as strong as I’d like, hence the Air-Brakes doubling as elevators. The ACS thrusters use a horrendous amount of electrical power to operate (400 -500 EC’s) so don’t forget to activate the MK3 reactor @ 12-15%. Despite that one caveat, they’re great for their raw thrust as well as their ability to help control / stabilize the craft.

Cheers and Happy Flying!


A mod aircraft called ACS STTO Version 3. Built with 417 of the finest parts, its root part is mk3FuselageLF.25.

Built in the SPH in KSP version 1.7.2.


  • Type: SPH
  • Class: spaceplane
  • Part Count: 417
  • Mods: 10


  • Ablative-Airbrake
  • HeatControl Core
  • KerbalEngineer
  • Mk2 Stockalike Expansion
  • Mk3 Stockalike Expansion
  • Near Future Solar
  • Orbit Portal Technology [OPT] Spaceplane Parts (Legacy)
  • Squad (stock)
  • nearfutureaeronautics
  • opt
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