48-7S "Spark" Liquid Fuel Engine

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48-7S "Spark" Liquid Fuel Engine
Part image
Liquid fuel engine by
Rockomax Conglomerate
Radial size Tiny
Cost (total) 240.00 Funds
Mass (total) 0.13 t
Drag 0.2
Max. Temp. 2000 K
Impact Tolerance 7 m/s
Research Propulsion systems.png Propulsion Systems
Unlock cost 2 800 Funds
Since version 0.21
Part configuration liquidEngine48-7S
Liquid fuel engine
Maximum thrust (1 atm) 16.56 kN
(vacuum) 20.00 kN
Isp (1 atm) 265 s
(vacuum) 320 s
Fuel consumption 1.27 Units of fuel/s

Thrust vectoring 3 °
Testing Environments
On the surface ✓ Yes
In the ocean ✓ Yes
On the launchpad ✓ Yes
In the atmosphere ✓ Yes
Sub orbital ✓ Yes
In an orbit ✓ Yes
On an escape ✓ Yes
Docked × No
Test by staging ✓ Yes
Manually testable ✓ Yes

Originally from the KSPX parts mod, the Rockomax 48-7S is the non radial version of the Rockomax 24-77.


Like the 24-77, LV-1, and LV-1R, the 48-7S is intended to propel probes and small crewed craft. Due to its relatively high Isp and thrust to weight ratio, the 48-7S is remarkably capable in ascent, transfer, and lander roles. It also has thrust vectoring, like its radially attached counterpart,the Rockomax 24-77.


A cousin of the 24-77, the 48-7S is a stack mounted probe engine that packs quite a punch.

Rockomax Conglomerate


  • Thrust increased from 20 to 30 kN.
  • Initial release