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Rocket Engine, Liquid Fuel, JATO, M19G


Display Status:

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Collection Item Summary:

This appears to be a prototype chamber for a 2,000 pound thrust MG 19 rocket motor developed by Reaction Motors, Inc. for use as a JATO (Jet-Assisted-Take-Off) unit for heavily-loaded PBM Navy seaplanes. The MG19 was developed in 1943.

However, the Navy did not adopt liquid propellant JATOs and only used them on an experimental basis. Both the Navy and U.S. Army Air Corps opted for simpler and cheaper solid propellant JATOs. This object was donated to the Smithsonian by the Reaction Motors Division, Thiokol Chemical Corporation in 1985.

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

Reaction Motors Div., Thiokol Chemical Corp.


  • Copper Alloy
  • Ferrous Alloy
  • Non-Ferrous Metal Alloy
  • Paint


  • 3-D (Approximate): 31.8 × 17.8 × 71.1cm (12 1/2 × 7 × 28 in.)
  • Storage: 138.4 × 82.6 × 112.4cm, 186.9kg (54 1/2 × 32 1/2 × 44 1/4 in., 412lb.)

Country of Origin

United States of America


PROPULSION-Components (Engine Parts)

Inventory Number


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