Lox/Kerosene propellant rocket stage. Loaded/empty mass 42,168/2,712 kg. Thrust 615.50 kN. Vacuum specific impulse 304 seconds.
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Gross mass: 42,168 kg (92,964 lb).
Unfuelled mass: 2,712 kg (5,978 lb).
Height: 18.60 m (61.00 ft).
Diameter: 1.70 m (5.50 ft).
Thrust: 615.50 kN (138,370 lbf).
Specific impulse: 304 s.
Specific impulse sea level: 275 s.
Burn time: 169 s.
Merlin 1A SpaceX Lox/Kerosene rocket engine. 378.040 kN. First stages. Hardware. Isp=300s. Completed development in early 2005. Pintle injector concept. Replaced by Merlin 1C. First flight 2006. More...
Associated Launch Vehicles
Falcon 1e Version of Falcon 1 with stretched first stage and much more powerful Merlin engine. More...
Associated Manufacturers and Agencies
SpaceX American manufacturer of rockets, spacecraft, and rocket engines. SpaceX, USA. More...
Lox/Kerosene Liquid oxygen was the earliest, cheapest, safest, and eventually the preferred oxidiser for large space launchers. Its main drawback is that it is moderately cryogenic, and therefore not suitable for military uses where storage of the fuelled missile and quick launch are required. In January 1953 Rocketdyne commenced the REAP program to develop a number of improvements to the engines being developed for the Navaho and Atlas missiles. Among these was development of a special grade of kerosene suitable for rocket engines. Prior to that any number of rocket propellants derived from petroleum had been used. Goddard had begun with gasoline, and there were experimental engines powered by kerosene, diesel oil, paint thinner, or jet fuel kerosene JP-4 or JP-5. The wide variance in physical properties among fuels of the same class led to the identification of narrow-range petroleum fractions, embodied in 1954 in the standard US kerosene rocket fuel RP-1, covered by Military Specification MIL-R-25576. In Russia, similar specifications were developed for kerosene under the specifications T-1 and RG-1. The Russians also developed a compound of unknown formulation in the 1980's known as 'Sintin', or synthetic kerosene. More...
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