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M55A1

The refurbished Minuteman II first-stage motor used by the active Minotaur I launch service.

Identity

Domains: spaceflight
Identity Level: model
Kind: solid-rocket-motor
Name: M55A1
Status: active

Details

Description: The refurbished Minuteman II first-stage motor used by the active Minotaur I launch service.
Propellants: solid propellant

Links

Official Url: https://cdn.northropgrumman.com/-/media/Project/Northrop-Grumman/ngc/what-we-do/space/launch-vehicles/minotaur/Minotaur-I-User-Guide.pdf

Assets & Meta

Creation Time: July 29, 2026 at 09:11:59 UTC
Updated Time: July 29, 2026 at 09:11:59 UTC

Other

Sources

Accessed Date
2026-07-29
Note
Supports the legacy vehicle installation and the narrow canonical identity used for migration.
Publisher
Official vehicle or program source
Title
Minotaur I official vehicle reference
Url
https://cdn.northropgrumman.com/-/media/Project/Northrop-Grumman/ngc/what-we-do/space/launch-vehicles/minotaur/Minotaur-I-User-Guide.pdf