RE-J10 "Wolfhound" Liquid Fuel Engine

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RE-J10 "Wolfhound" Liquid Fuel Engine
Part image
Liquid fuel engine by
Rockomax Conglomerate

Radial size Large
Cost (total) 3 000.00 Funds
Mass (total) 3.30 t
Drag 0.2
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 6 m/s
Research Tech tree very heavy rocketry.png Very Heavy Rocketry
Unlock cost 12 000 Funds
Since version 1.4.1
Part configuration LiquidEngineRE-J10.cfg
Maximum thrust (1 atm) 69.08 kN
(vacuum) 375.00 kN
Isp (1 atm) 70 s
(vacuum) 380 s
Fuel consumption 20.13 Units of fuel/s

Thrust vectoring 3 °

The RE-J10 Wolfhound liquid fuel engine is an upper stage engine modeled on the Apollo SPS.


The thrust is somewhat higher for this engine than for other bipropellant space stages (Poodle and Terrier), albeit at somewhat lower TWR. More importantly, the vacuum Isp is far higher. Higher in fact than any other stock/DLC bipropellant engine, making this one of the most effective engines for deep space travel. Depending on use case, this may be a better choice than the LV-N.

Product description

Woof! With the largest bell for its size, this upper stage engine will leave your ears ringing.

Rockomax Conglomerate


As of version 1.4.1 this engine has two models that can be switched in the editor.

Shroud variant
Bare variant
The different variants of the engine


Real-world comparison

The RE-J10 was inspired by the American AJ10-137 engine.


  • Renamed from 'RE-J10 "Wolfhound" Liquid Fuel Engine AJ10' to 'RE-J10 "Wolfhound" Liquid Fuel Engine'
  • Moved tech from Heavy Rocketry to Very Heavy Rocketry
  • Increased unlock cost from 6200 to 12000
  • Increased cost from 1680 to 3000
  • Increased mass from 2.5 to 3.3
  • Improved Isp
  • Added ModuleTestSubject
  • Initial Release