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The Falcon 9 v1.0 first stage was used on the first five Falcon 9 launches, and powered by nine SpaceX Merlin 1C rocket engines arranged in a 3x3 pattern. Each of these engines had a sea-level thrust of 556 kN (125,000 pounds-force) for a total thrust on liftoff of about 5,000 kN (1,100,000 pounds-force).
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Falcon 9 v1.0 (left) and v1.1 (right) engine configurations The launch of the first Falcon 9 v1.1 from Vandenberg SLC-4 (Falcon 9 Flight 6) in September 2013. V1.1 is 60% heavier with 60% more thrust than v1.0. [73] Its nine (more powerful) Merlin 1D engines were rearranged into an "octagonal" pattern [88] [89] that SpaceX called Octaweb. This ...
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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.
SpaceX was planning to develop a 560 kN (130,000 lbf) version of Merlin 1C to be used in Falcon 9 Block II and Falcon 1E boosters. [23] This engine and these booster models were dropped in favor of the more advanced Merlin 1D engine and longer Falcon 9 v1.1 booster. Merlin 1C Vacuum engine at Hawthorne factory in 2008
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Designed and operated by SpaceX, the Falcon 9 family includes the retired versions Falcon 9 v1.0, v1.1, and v1.2 "Full Thrust" (blocks 3 and 4), along with the active Block 5 evolution. Falcon Heavy is a heavy-lift derivative of Falcon 9, combining a strengthened central core with two Falcon 9 first stages as side boosters. [1]