Encyclopedia Astronautica
R-31 Stage 1


Solid propellant rocket stage. Loaded mass 17,500 kg. Thrust 578.00 kN.

Status: Retired 1990.
Gross mass: 17,500 kg (38,500 lb).
Height: 6.30 m (20.60 ft).
Diameter: 1.54 m (5.05 ft).
Thrust: 578.00 kN (129,939 lbf).
Burn time: 84 s.
Number: 6 .

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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 Deployed from 1980, but withdrawn in 1990 under the terms of the SALT-2 Treaty.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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