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The Merlin 1B rocket engine was an upgraded version of the Merlin 1A engine. The turbopump upgrades were handled by Barber-Nichols, Inc. for SpaceX. [ 10 ] It was intended for Falcon 1 launch vehicles, capable of producing 380 kN (85,000 lbf) of thrust at sea level and 420 kN (95,000 lbf) in vacuum, and performing with a specific impulse of 261 ...
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 flights in 2006 and 2007. Merlin 1B had a somewhat more powerful turbo-pump, and generated more thrust, but was never flown on a flight vehicle before SpaceX's move to the Merlin 1C. Merlin 1D rocket engines on a Falcon 9 ...
[8] [9] It is powered by Merlin 1D engines burning rocket-grade kerosene and liquid oxygen (LOX). The main changes from Block 3 (the original Falcon 9 Full Thrust) to Block 5 are higher-thrust engines and improvements to the landing legs along with numerous other small changes to streamline recovery and re-use of first-stage boosters and ...
Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio
The second stage of the Falcon 9 has 1 short or regular nozzle, Merlin 1D Vacuum engine version. Falcon 9 is capable of losing up to 2 engines and still complete the mission by burning the remaining engines longer. Each Merlin rocket engine is controlled by three voting computers, each having 2 CPUs which constantly check the other 2 in the trio.
It includes realigned first-stage engines [24] and 60 percent longer fuel tanks, making it more susceptible to bending during flight. [23] The engines themselves have been upgraded to the more powerful Merlin 1D. These improvements increased the payload capability from 10,450 to 13,150 kilograms (23,040 to 28,990 lb). [25]
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]
The upper stage is powered by a single Merlin 1D engine modified for vacuum operation. [ 36 ] The interstage, which connects the upper and lower stage for Falcon 9, is a carbon fiber aluminum core composite structure. [ 37 ]