Encyclopedia Astronautica
SSUS-A Motor


Thiokol solid rocket engine. In Production. A slightly modified stage 3 Minuteman 3 with TVC and roll control systems removed, provided propulsion for the Douglas Spinning Solid Upper Stage for use with Space Shuttle payloads.

The Thiokol TU-844 motor was to provide propulsion for the McDonnell Douglas Spinning Solid Upper Stage, which was designed to launch Atlas Centaur-class payloads from the Space Shuttle. A slightly modified stage 3 Minuteman 3 with TVC and roll control systems removed. However, the motor was adapted as the perigee boost motor for the Leasat and JCSat telecom satellites..

Status: In Production.

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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...

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