Encyclopedia Astronautica

Credit: © Mark Wade
Nitric acid/Kerosene propellant rocket stage. Loaded/empty mass 5,385/1,645 kg. Thrust 93.10 kN. Vacuum specific impulse 251 seconds. Developed from Russian storable fuel tactical missile. Original R-11 designed by Korolev OKB, subsequent developments by Makeyev OKB. Using calculations of Gerald Bull, stretched and clustered as basis of Iraqi ICBM/satellite launch vehicle.

AKA: 8K14; SS-1C Scud B; 9K72 Elbrus.
Status: Active.
Gross mass: 5,385 kg (11,871 lb).
Unfuelled mass: 1,645 kg (3,626 lb).
Height: 7.43 m (24.37 ft).
Diameter: 0.96 m (3.14 ft).
Span: 1.77 m (5.80 ft).
Thrust: 93.10 kN (20,930 lbf).
Specific impulse: 251 s.
Specific impulse sea level: 219 s.
Burn time: 95 s.
Number: 72 .

More... - Chronology...

Associated Countries
Associated Engines
  • Isayev R-17 Isayev Nitric acid/Kerosene rocket engine. 131.2 kN. R-17. Out of production. Designation unknown. First flight 1961. More...

Associated Launch Vehicles
  • R-17 Russian short-range ballistic missile. The final refinement of the R-11 design, the R-17, was exported widely and became infamous around the world by its ASCC reporting name - "Scud". It was perhaps the most famous ballistic missile of the post-war period due to its use in the Iran-Iraq 'War of the Cities' and the Gulf War. This was the definitive production version of what was essentially a storable-propellant rocket with the performance of the V-2. The original design was by Makeyev but the missile itself was produced by the Votkinsk Machine Building Plant. More...
  • Tamouz Iraqi space launch vehicle/ICBM based on clustering of Scud tactical missiles. Canadian rocket scientist Gerald Bull was allegedly killed by Israeli agents not for his work on the supergun, but rather for his much more damaging assistance to the Iraqis in doing the dynamic calculations for the Tamouz. More...
  • Al Hussein Iraqi modification of the R-17 that doubled the missile's range at the expense of more than halving the payload and accuracy. More...

Associated Propellants
  • Nitric acid/Kerosene Drawing on the German World War II Wasserfall rocket, nitric acid (HNO3) became the early storable oxidiser of choice for missiles and upper stages of the 1950's. To overcome various problems with its use, it was necessary to combine the nitric acid with N2O4 and passivation compounds. These formulae were considered extremely secret at the time. By the late 1950's it was apparent that N2O4 by itself was a better oxidiser. Therefore nitric acid was almost entirely replaced by pure N2O4 in storable liquid fuel rocket engines developed after 1960. Rocket propellant RP-1, or its foreign equivalents, is a straight-run kerosene fraction, which is subjected to further treatment, i.e., acid washing, sulphur dioxide extraction. Thus, unsaturated substances which polymerise in storage are removed, as are sulphur-containing hydrocarbons. More...

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