J-90 "Goliath" Turbofan Engine

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J-90 "Goliath" Turbofan Engine
Part image
Jet engine by
C7 Aerospace Division

Radial size Radial mounted
Cost (total) 2 600.00 Funds
Mass (total) 4.50 t
Drag 0.2
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 7 m/s
Research HeavyAerodynamics.png Heavy Aerodynamics
Unlock cost 15 000 Funds
Since version 1.0.5
Part configuration jetEngineBig.cfg
Jet engine
Maximum thrust 360 kN
Isp (max) 12600 s
Fuel consumption 0.58 Units of fuel/s
Intake air consumption 132.27 Air unit/s
Thrust vectoring No
Intake speed 30
Intake area 0.03 m2
Maximum intake air 3.4 Air unit
Testing Environments
On the surface Yes
In the ocean Yes
On the launchpad Yes
In the atmosphere Yes
Sub orbital No
In an orbit No
On an escape No
Docked No
Test by staging Yes
Manually testable Yes

The J-90 "Goliath" Turbofan Engine is a large jet engine added with version 1.0.5 of Kerbal Space Program. It is based on the Rolls-Royce Trent 800 and the GE90 high bypass turbofan engines.


It is the only jet engine with large radial size, and built in air intake. This airliner engine's thrust and multiplier curve for velocity make this engine ideal for subsonic large Mk3 airplanes, but also limits its role this purpose.

Visualization of the thrust multiplier curve for velocity
Visualization of the thrust multiplier curve for atmospheric pressure

Product description

The largest and highest thrust jet engine ever built. This engine works best at low cruising speeds and altitudes.

C7 Aerospace Division


  • Initial release

The table of the jet engines' thrust multiplier curves
Part Velocity curve(s) Atmosphere curve(s)

J-20 "Juno"

20.0 kN

J-20 Juno Basic Jet Engine velocity curve-temp.png
J-20 Juno Basic Jet Engine atmosphere curve-temp.png

J-33 "Wheesley"

120.0 kN

J-33 Wheesley Turbofan Engine velocity curve-temp.png
J-33 Wheesley Turbofan Engine atmosphere curve-temp.png

J-404 "Panther"

Dry Mode:
85.0 kN
Wet Mode:
130.0 kN

J-404 Panther Afterburning Turbofan velocity curves-temp.png
J-404 Panther Afterburning Turbofan atmosphere curves-temp.png

J-X4 "Whiplash"

130.0 kN

J-X4 Whiplash Turbo Ramjet Engine velocity curve-temp.png
J-X4 Whiplash Turbo Ramjet Engine atmosphere curve-temp.png
J-90 Goliath Turbofan Engine.png

J-90 "Goliath"

360.0 kN

J-90 Goliath Turbofan Engine velocity curve-temp.png
J-90 Goliath Turbofan Engine atmosphere curve-temp.png
Rapier Engine 01.png

CR-7 R.A.P.I.E.R.

105.0 kN

CR-7 R.A.P.I.E.R. Engine velocity curve-temp.png
CR-7 R.A.P.I.E.R. Engine atmosphere curve-temp.png