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A vacuum version of the Merlin 1D engine was developed for the Falcon 9 v1.1 and the Falcon Heavy second stage. [2] As of 2020, the thrust of the Merlin 1D Vacuum is 220,500 lbf (981 kN) [39] with a specific impulse of 348 seconds, [40] the highest specific impulse ever for a U.S. hydrocarbon rocket engine. [41]
Test firing of the Merlin 1D at SpaceX's McGregor test stand. Merlin 1 is a family of LOX/RP-1 rocket engines developed 2003–2012. Merlin 1A and Merlin 1B utilized an ablatively-cooled carbon-fiber composite nozzle. Merlin 1A produced 340 kilonewtons (76,000 lb f) of thrust and was used to power the first stage of the first two Falcon 1 ...
Merlin 1D FT USA: SpaceX: Falcon 9 B5, Heavy: Active 1st RP-1 / LOX: Gas generator: 311: 914,000 [22] 845,000 (SL) [22] 108.0 [23] 470: 194.5 [22] Merlin Vacuum 1D USA: SpaceX: Falcon 9 B5, Heavy: Active 2nd RP-1 / LOX: Gas generator: 348 [24] 981,000 [25] 2.36: Miranda USA: Firefly Aerospace: Antares 300 Series, MLV: Development 1st RP-1 / LOX ...
Falcon 9 Block 5 is a partially reusable, human-rated, two-stage-to-orbit, medium-lift launch vehicle [c] designed and manufactured in the United States by SpaceX.It is the fifth major version of the Falcon 9 family and the third version of the Falcon 9 Full Thrust.
As Vice President of Propulsion Engineering and subsequently CTO of Propulsion at SpaceX, Mueller led the team that developed the Merlin 1A and Kestrel engines for the Falcon 1, the first liquid fueled orbital rocket launched by a private company; the Merlin 1C, Merlin 1D and MVac engines for the early iterations of the Falcon 9 launch vehicle ...
The Falcon 9 v1.1 features stretched first and second stages, and a new octagonal arrangement of the 9 Merlin-1D engines on the first stage (replacing the square pattern of engines in v1.0). SpaceX notes that the Falcon 9 v1.1 is cheaper to manufacture, and longer than v1.0.
The third version of the Falcon 9 was developed in 2014–2015 and made its maiden flight in December 2015. The Falcon 9 Full Thrust is a modified reusable variant of the Falcon 9 family with capabilities that exceed the Falcon 9 v1.1, including the ability to "land the first stage for geostationary transfer orbit (GTO) missions on the drone ship" [14] [15] The rocket was designed using ...
SpaceX's Merlin and Kestrel rocket engines use a RP-1 and liquid oxygen ("kerolox") combination. Raptor has about triple the thrust of SpaceX's Merlin 1D engine, which powers the Falcon 9 and Falcon Heavy launch vehicles. Raptor was conceived to burn hydrogen and oxygen propellants as of 2009. [36]