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S3 KS-25x4 "Mammoth" Liquid Fuel Engine

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S3 KS-25x4 "Mammoth" Liquid Fuel Engine
Part image
Liquid fuel engine by
Kerbodyne
Radial size Extra large
Cost (total) 39 000.00 Fund
Mass (total) 15.00 t
Drag 0.2
Max. Temp. 2000 K
Impact Tolerance 20 m/s
Research Tech tree very heavy rocketry.png Very Heavy Rocketry
Unlock cost 115000 Fund
Since version 0.23.5
Part configuration Size3EngineCluster
Maximum thrust (1 atm) 3 746.03 kN
(vacuum) 4 000.00 kN
Isp (1 atm) 295 s
(vacuum) 315 s
Fuel con­sumption 258.62 units of fuel/s
Thrust vectoring 2 °
On the surface ✓ Yes
On the ocean ✓ Yes
In atmosphere ✓ Yes
In space ✓ Yes
Test by staging ✓ Yes
Manually testable ✓ Yes

The S3 KS-25x4 Engine Cluster is a liquid fuel engine with four nozzles. This is the engine with the highest thrust and, compared to the thrust, high specific impulse. It doesn't allow placing additional stages beneath the engine cluster. This is the second liquid fuelled engine after the R.A.P.I.E.R. Engine which uses multiple nozzles.

The KS-25 might be a reference to the Space Shuttle Main Engines which are also named RS-25, especially as it was introduced as a Space Launch System component which uses four RS-25 engines.

It is the most expensive part in the game.

Product description

Kerbodyne engineers got fed up with having to contend with overly complicated staging arrays for lifting heavy payloads, and decided instead to just build a truly enormous engine. Strapping together four of Kerbodyne's KS-25 rocket motors in a single assembly, they created the largest rocket engine in production anywhere. It's certainly got the power to match its size, and although it excels in its main role as a first-stage engine, the lack of structural hardpoints on its underside makes it quite less suitable for other purposes. Its price tag also seems to match its size, in fact.

Changes

0.24
  • Cost increased from 5900 to 32400 (and made meaningful)
0.23.5
  • Initial release
Default parts
Jet engines J-33 "Wheesley" Basic Jet EngineJ-X4 "Whiplash" Turbo Ramjet EngineCR-7 R.A.P.I.E.R. Engine
Liquid fuel tanks Oscar-B Fuel TankROUND-8 Toroidal Fuel TankFL-T100 Fuel TankFL-T200 Fuel TankFL-T400 Fuel TankFL-T800 Fuel TankRockomax X200-8 Fuel TankRockomax X200-16 Fuel TankRockomax X200-32 Fuel TankRockomax Jumbo-64 Fuel TankKerbodyne S3-3600 TankKerbodyne S3-7200 TankKerbodyne S3-14400 TankC7 Brand Adapter - 2.5m to 1.25mC7 Brand Adapter Slanted - 2.5m to 1.25mNCS Adapter
Liquid fuel engines LV-1 "Ant" Liquid Fuel EngineLV-1R "Spider" Liquid Fuel Engine24-77 "Twitch" Liquid Fuel Engine48-7S "Spark" Liquid Fuel EngineMk-55 "Thud" Liquid Fuel EngineT-1 Toroidal "Aerospike" Liquid Fuel EngineLV-N "Nerv" Atomic Rocket MotorLV-909 "Terrier" Liquid Fuel EngineLV-T45 "Swivel" Liquid Fuel EngineLV-T30 "Reliant" Liquid Fuel EngineRE-L10 "Poodle" Liquid Fuel EngineRE-I5 "Skipper" Liquid Fuel EngineRE-M3 "Mainsail" Liquid EngineKerbodyne KR-2L+ "Rhino" Liquid Fuel EngineLFB KR-1x2 "Twin-Boar" Liquid Fuel EngineS3 KS-25x4 "Mammoth" Liquid Fuel Engine
Solid fuel rockets Sepratron IRT-5 "Flea" Solid Fuel BoosterRT-10 "Hammer" Solid Fuel BoosterBACC "Thumper" Solid Fuel BoosterS1 SRB-KD25k "Kickback" Solid Fuel Booster
Monopropellant fuel tanks Stratus-V Cylindrified Monopropellant TankStratus-V Roundified Monopropellant TankFL-R1 RCS Fuel TankFL-R10 RCS Fuel TankFL-R25 RCS Fuel TankMk2 Monopropellant TankMk3 Monopropellant Tank
Monopropellant engines O-10 "Puff" MonoPropellant Fuel Engine
Jet fuselages Mk1 Liquid Fuel FuselageMk2 to 1.25m AdapterMk2 to 1.25m Adapter LongMk2 Liquid Fuel FuselageMk2 Liquid Fuel Fuselage ShortMk2 Rocket Fuel FuselageMk2 Rocket Fuel Fuselage ShortMk2 Bicoupler2.5m to Mk2 AdapterMk3 to 2.5m AdapterMk3 to 2.5m Adapter SlantedMk3 to 3.75m AdapterMk3 to Mk2 AdapterMk3 Liquid Fuel FuselageMk3 Liquid Fuel Fuselage ShortMk3 Liquid Fuel Fuselage LongMk3 Rocket Fuel FuselageMk3 Rocket Fuel Fuselage ShortMk3 Rocket Fuel Fuselage Long
Fuel transfer FTX-2 External Fuel Duct
Xenon propulsion IX-6315 "Dawn" Electric Propulsion SystemPB-X50R Xenon ContainerPB-X150 Xenon ContainerPB-X750 Xenon Container
Ore storage Small Holding TankLarge Holding Tank
Landing gear LY-10 Small Landing GearLY-50 Medium Landing GearLY-99 Large Landing GearLY05 Steerable Landing GearLY-01 Fixed Landing GearLT-05 Micro Landing StrutLT-1 Landing StrutsLT-2 Landing Strut
Parachutes Mk2-R Radial-Mount ParachuteMk16 ParachuteMk16-XL ParachuteMk25 ParachuteLaunch Escape SystemMk12-R Radial-Mount Drogue Chute
Ladders Pegasus I Mobility EnhancerTelus Mobility EnhancerTelus-LV Bay Mobility Enhancer
Powered wheels RoveMax Model M1RoveMax Model S2RoveMax Model XL3TR-2L Ruggedized Vehicular Wheel
Generators PB-NUK Radioisotope Thermoelectric GeneratorOX-STAT Photovoltaic PanelsGigantor XL Solar ArrayOX-4W 3x2 Photovoltaic PanelsOX-4L 1x6 Photovoltaic PanelsSP-W 3x2 Photovoltaic PanelsSP-L 1x6 Photovoltaic PanelsFuel CellFuel Cell Array
Batteries Z-100 Rechargeable Battery PackZ-400 Rechargeable BatteryZ-200 Rechargeable Battery BankZ-1k Rechargeable Battery BankZ-4K Rechargeable Battery Bank
Lamps Illuminator Mk1Illuminator Mk2
Space station parts Clamp-O-Tron Jr.Clamp-O-Tron Docking PortClamp-O-Tron Shielded Docking PortClamp-O-Tron Sr. Docking PortInline Clamp-O-TronAdvanced Grabbing UnitPPD-10 Hitchhiker Storage ContainerMk2 Crew CabinMk3 Passenger Module
Cargo bays Mk2 Cargo Bay CRG-04Mk2 Cargo Bay CRG-08Mk3 Cargo Bay CRG-25Mk3 Cargo Bay CRG-50Mk3 Cargo Bay CRG-100Service Bay (1.25m)Service Bay (2.5m)
Ore processing 'Drill-O-Matic' Mining ExcavatorISRU Converter