Kestrel

E18342

liquid-fueled rocket engine pressure-fed rocket engine rocket engine

Kestrel is a pressure-fed, liquid-fueled rocket engine developed by SpaceX for the second stage of its early Falcon 1 launch vehicle.

Predicate	Object
instanceOf	liquid-fueled rocket engine → pressure-fed rocket engine → rocket engine →
application	orbital upper stage propulsion →
attitudeControlMethod	thrust vector control via helium cold gas thrusters →
chamberPressure_bar	about 9 →
coolingMethod	ablative cooling →
countryOfOrigin	United States →
cycle	pressure-fed cycle →
designedForEnvironment	vacuum →
developer	SpaceX →
feedSystem	pressure-fed →
firstFlightDate	2006-03-24 →
firstFlightVehicle	Falcon 1 Flight 1 →
fuel	RP-1 →
gimbalCapability	non-gimbaled →
lastFlightDate	2009-07-14 →
lastFlightVehicle	Falcon 1 Flight 5 →
launchVehicleFamily	Falcon family →
manufacturer	SpaceX →
nozzleExpansionRatio	about 60 →
nozzleMaterial	niobium alloy →
oxidizer	liquid oxygen →
propellantCombination	LOX/RP-1 →
propellantFeedGas	helium →
propellantType	liquid →
relatedEngine	Merlin 1A → Merlin 1C →
restartCapability	designed for in-space restart →
specificImpulseVac_s	about 317 →
stageApplication	second stage →
status	retired →
successfullyReachedOrbitOnVehicle	Falcon 1 Flight 4 → Falcon 1 Flight 5 →
throttleCapability	fixed thrust →
thrustEnvironment	vacuum-optimized →
thrustInVacuum_kN	about 31 →
thrustInVacuum_lbf	about 7000 →
usedByOrganization	SpaceX →
usedInProgram	Falcon 1 program →
usedOnLaunchVehicle	Falcon 1 Flight 1 → Falcon 1 Flight 2 → Falcon 1 Flight 3 → Falcon 1 Flight 4 → Falcon 1 Flight 5 →
usedOnVehicle	Falcon 1 →

Subject (surface form when different)	Predicate
Falcon 1 → Flight 4 →	secondStageEngine