Encyclopedia Astronautica
Star 20A


Thiokol solid rocket engine. Out of Production. Total impulse 83,839 kgf-sec. Motor propellant mass fraction 0.91. Isp=291s.

Status: Out of Production.
Gross mass: 314 kg (692 lb).
Unfuelled mass: 28 kg (61 lb).
Diameter: 0.50 m (1.64 ft).
Specific impulse: 292 s.
Number: 2 .

More... - Chronology...


Associated Countries
See also
Associated Manufacturers and Agencies
  • Thiokol American manufacturer of rocket engines and rockets. Thiokol Corporation, Ogden, UT, USA. 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...

Bibliography
  • Thiokol Corporation Web Site, As of May, 1999. Web Address when accessed: here.

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