Encyclopedia Astronautica
Barbarian MM-1


N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 400,000/25,000 kg. Thrust 6,080.00 kN. Vacuum specific impulse 302 seconds. All values roughly estimated based on number of engines and diameter given.

Cost $ : 300.000 million. No Engines: 5.

Status: Study 1986.
Gross mass: 400,000 kg (880,000 lb).
Unfuelled mass: 25,000 kg (55,000 lb).
Height: 20.00 m (65.00 ft).
Diameter: 3.05 m (10.00 ft).
Span: 5.80 m (19.00 ft).
Thrust: 6,080.00 kN (1,366,830 lbf).
Specific impulse: 302 s.
Specific impulse sea level: 250 s.
Burn time: 175 s.

More... - Chronology...


Associated Countries
Associated Engines
  • LR87-11 Aerojet N2O4/Aerozine-50 rocket engine. 1218.8 kN. Out of production. Isp=302s. Powered Titan 3 and 4 first stages. Replaced the -9 model, first flown 1968. First flight 1964. More...

Associated Launch Vehicles
  • Barbarian MM American heavy-lift orbital launch vehicle. The Zenith Star space-based chemical laser missile defence weapon required a launch vehicle capable of placing a 45,000 kg payload into low earth orbit. Martin and Aerojet turned to their work 20 years earlier on advanced Titans for the MOL program. These earlier studies were combined with new concepts for tank construction and materials. The Martin Barbarian was a 4.57 m diameter Titan vehicle (instead of the customary 3.05 m) with four LR-87 engines on the first stage, and a single LR-87 engine on the second stage. More...

Associated Propellants
  • N2O4/Aerozine-50 Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Aerozine was a 50-50 mixture of hydrazine and UDMH developed for use in the Titan 2 missile. Copied in one Russian missile but otherwise straight UDMH used more commonly. Higher boiling point than UDMH. More...

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