Encyclopedia Astronautica
RSA-4-2


South African solid rocket engine. 676 kN. Development ended 1994. Isp=275s. Used on RSA-4 launch vehicle.

Status: Development ended 1994.
Thrust: 676.00 kN (151,970 lbf).
Specific impulse: 275 s.
Specific impulse sea level: 220 s.
Burn time: 52 s.

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Associated Countries
See also
Associated Launch Vehicles
  • RSA-4 South African all-solid orbital launch vehicle. The RSA-4 ICBM / satellite launcher was a planned follow-on to the RSA-3. A large new first stage optimised the vehicle and more than doubled the payload in comparison to the RSA-3. It is not known if the project reached the point of testing of the large motor, which was equivalent to the US Peacekeeper first stage. 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...

Associated Stages
  • RSA-4-2 Solid propellant rocket stage. Loaded/empty mass 11,000/2,000 kg. Thrust 470.00 kN. Vacuum specific impulse 277 seconds. Essentially identical to RSA-3 second stage. Includes 1000 kg upper stage avionic section / spin table, which is jettisoned prior to stage three ignition. More...

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