Encyclopedia Astronautica
RD RT-21-3


MITT solid rocket engine. 245 kN.

Gross mass: 8,700 kg (19,100 lb).
Unfuelled mass: 1,000 kg (2,200 lb).
Height: 3.90 m (12.70 ft).
Diameter: 1.34 m (4.39 ft).
Thrust: 245.00 kN (55,078 lbf).

More... - Chronology...


Associated Countries
See also
Associated Manufacturers and Agencies
  • Nadiradze Russian manufacturer of rocket engines and rockets. Nadiradze, Russia. 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
  • Temp-2S-3 Solid rocket stage. 245.00 kN (55,078 lbf) thrust. Mass 8,700 kg (19,180 lb). More...

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