Encyclopedia Astronautica
Microcosm 89N

Microcosm Lox/Kerosene rocket engine. 89 kN. First stages. Hardware. In 2005 tests were conducted of this low-cost ablative composite rocket engine for responsive launch vehicle applications.

In May 2005 Microcosm successfully completed a series of tests of an 89,000-newton low-cost ablative composite rocket engine for responsive launch vehicle applications. Several engines underwent a series of tests ranging from 1 second to 30 seconds in duration with multiple injectors, chambers, and operating pressures. The testing was the combined effort of Microcosm; Sierra Engineering of Carson City, Nevada, which designed the injector for the engine; and the AFRL facilities at Edwards Air Force Base where the tests were conducted. This engine would be used on the booster pods and sustainer stage of the Microcosm Eagle SLV included in the DARPA and USAF FALCON Small Launch Vehicle Program.

Application: First stages.


Propellant Formulation: Lox/Jet A.

Status: Hardware.
Thrust: 89.00 kN (20,007 lbf).
First Launch: 2000-2004.

More... - Chronology...

Associated Countries
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Associated Manufacturers and Agencies
  • Microcosm American manufacturer of rocket engines and rockets. Microcosm, USA. More...

Associated Propellants
  • 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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