SSTO Boosters
by a10t2
uploaded 2017-11-25
stock lifter


This craft file contains my early- (10 t), mid- (20 t), and late-career (50 t) SSTO boosters. To use, just snap off the desired booster and save as a subassembly. Part counts are low (37, 38, and 49) and R&D progressions are reasonable for Career games.

Fully-recoverable launches to a 100 km equatorial orbit are possible for at least 80% of the rated payload capacity, leaving >200 m/s ∆v for reentry and recovery. Notably, this makes the 50 t booster capable of launching a full orange tank. All three boosters also include reusable SRB modules that splash down east of KSC and extend payload to at least 110% of the rated capacity.

Using the Trajectories mod, precision recoveries at KSC are possible. The 20 t and 50 t boosters will give accurate trajectory results provided the heat shield airbrake is deployed. The 10 t booster instead utilizes stock AIRBRAKES; a 100x38 km orbit with periapsis over the peninsula east of KSC will result in a slight overshoot, and a small retrograde burn at ~50 km can then adjust for landing at the center. Given the impact tolerances of the Twin-Boar and LT-2 legs, respectively, the 20 t and 50 t boosters can also (mostly) survive a zero-fuel landing provided the terrain is level (i.e. KSC).

A stock rocket called SSTO Boosters. Built with 144 of the finest parts, its root part is trussPiece3x. Built in the VAB in KSP version 1.2.2.


  • Type: VAB
  • Class: lifter
  • Part Count: 144
  • Pure Stock
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