Encyclopedia Astronautica
R-31 Stage 2


Solid propellant rocket stage. Loaded mass 6,900 kg. Thrust 233.30 kN.

Status: Retired 1990.
Gross mass: 6,900 kg (15,200 lb).
Height: 3.10 m (10.10 ft).
Diameter: 1.54 m (5.05 ft).
Thrust: 233.30 kN (52,448 lbf).
Burn time: 74 s.
Number: 0 .

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Associated Countries
Associated Launch Vehicles
  • R-31 Russian submarine launched ballistic missile. First Soviet submarine-launched ballistic missile to reach production using solid propellants. Deployed from 1980, but withdrawn in 1990 under the terms of the SALT-2 Treaty. More...

Associated Propellants
  • Solid Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. Solid propellants have the fuel and oxidiser embedded in a rubbery matrix. They were developed to a high degree of perfection in the United States in the 1950's and 1960's. In Russia, development was slower, due to a lack of technical leadership in the area and rail handling problems. More...

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