Rocket Motor, Solid Fuel, Marc 166 Motor


Display Status:

This object is on display in the Rockets and Missiles exhibition at the Steven F. Udvar-Hazy Center in Chantilly, VA.

Collection Item Summary:

This is the Marc 166 motor that ejected the nosecone of the Trident II submarine launched ballistic missile (SLBM). The nosecone ejected prior to the deployment of the Trident II's multiple independently targeted reentry vehicles (MIRVs), which would carry the nuclear warhead payloads to their targets.

The Trident II SLBM entered service about the U.S. Navy's Ohio-class fleet ballistic missile submarines in 1989, replacing the older Trident I.

Transferred to NASM from the Atlantic Research Corporation.

Collection Item Long Description:

Inventory Number


Credit Line

Gift of Atlantic Research Corporation

Country of Origin

United States of America


Overall, steel


2-D - In Frame (H x W x D): 45.7 × 12.7cm, 1.8kg (1 ft. 6 in. × 5 in., 4lb.)

Data Source

National Air and Space Museum

Restrictions & Rights

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


PROPULSION-Rocket Engines

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