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Rocket Engine, Liquid Fuel, Radiamic, Cutaway; also Designated C-1


Display Status:

This object is on display in the How Things Fly exhibition at the National Air and Space Museum in Washington, DC.

Collection Item Summary:

This is a cutaway of the Radiamic liquid fuel thruster of about 100 pounds thrust. It was designated the C-1, or "Common Engine" by the National Aeronautics and Space Administration (NASA).

The C-1 was developed beginning in 1965 by the Reaction Motors Division of the Thiokol Chemical Corporation as a versatile small liquid fuel auxiliary rocket engine adaptable for a number of launch vehicles and spacecraft control systems. However, NASA decided not to go with a common engine and the C-1 never became operational. This engine was donated to the Smithsonian in 1976 by the NASA Marshall Space Flight Center.

Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum

Credit Line

Transferred from the National Aeronautics and Space Administration


Nozzle, probably steel; plumbing, gold plated; solenoid valve with black plastic protective cover; and four red plastic screw caps on pipe ends of plumbing and one other red plastic cover over another pipe.


  • 3-D (Model): 45 × 19 × 18.3cm (17 11/16 × 7 1/2 × 7 3/16 in.)
  • Other (Height on Stand): 30.5cm (12 in.)

Country of Origin

United States of America


PROPULSION-Rocket Engines

Inventory Number


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