Encyclopedia Astronautica
Ariane 2-2


N2O4/UDMH propellant rocket stage. Loaded/empty mass 37,130/3,625 kg. Thrust 805.00 kN. Vacuum specific impulse 296 seconds.

Cost $ : 10.000 million.

AKA: L-33B.
Status: Retired 1989.
Gross mass: 37,130 kg (81,850 lb).
Unfuelled mass: 3,625 kg (7,991 lb).
Height: 11.50 m (37.70 ft).
Diameter: 2.60 m (8.50 ft).
Span: 2.60 m (8.50 ft).
Thrust: 805.00 kN (180,971 lbf).
Specific impulse: 296 s.
Specific impulse sea level: 210 s.
Burn time: 125 s.
Number: 21 .

More... - Chronology...


Associated Countries
Associated Engines
  • Viking 4B SEP N2O4/UDMH rocket engine. 805 kN. Isp=296s. Used on Ariane 4. First flight 1984. More...

Associated Launch Vehicles
  • Ariane 3 French orbital launch vehicle. Four stage vehicle consisting of 2 x PAP solid rocket boosters + Ariane 2 core. More...
  • Ariane 42L-3 French orbital launch vehicle. As Ariane 42L but with Ariane H10-3 upper stage. More...
  • Ariane 42P-3 French orbital launch vehicle. As Ariane 42P but with Ariane H10-3 upper stage. More...
  • Ariane 44P-3 French orbital launch vehicle. As Ariane 44P but with Ariane H10-3 upper stage. More...

Associated Propellants
  • N2O4/UDMH Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Unsymmetrical Dimethylhydrazine ((CH3)2NNH2) became the storable liquid fuel of choice by the mid-1950's. Development of UDMH in the Soviet Union began in 1949. It is used in virtually all storable liquid rocket engines except for some orbital manoeuvring engines in the United States, where MMH has been preferred due to a slightly higher density and performance. More...

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