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Titan IV Solid Rocket Motor Upgrade

The three-segment Solid Rocket Motor Upgrade used in pairs as Titan IV stage-zero strap-on motors, replacing the earlier Titan IV SRM for improved reliability and performance.

Identity

Aliases
SRMUSolid Rocket Motor UpgradeTitan IV SRMU
Domains
spaceflight
Identity Level
model
Kind
solid-rocket-motor
Name
Titan IV Solid Rocket Motor Upgrade
Status
retired

Details

Description
The three-segment Solid Rocket Motor Upgrade used in pairs as Titan IV stage-zero strap-on motors, replacing the earlier Titan IV SRM for improved reliability and performance.
Propellants
solid composite propellant

Links

Assets & Meta

Creation Time
August 1, 2026 at 15:20:05 UTC
Updated Time
August 1, 2026 at 15:20:05 UTC

Other

Sources
  • Accessed Date
    2026-08-01
    Note
    NASA's U.S. launch-vehicle table identifies two Titan IV stage-zero SRM motors, the Centaur RL10A-3-3A stage, and the SRMU three-segment motor entry for Titan IV/Centaur.
    Publisher
    NASA
    Title
    Aeronautics and Space Report of the President, 1997
  • Accessed Date
    2026-08-01
    Note
    The audit identifies SRMU as an essential Titan IV component and documents its lighter three-segment casing and reliability/performance upgrade over the earlier SRM.
    Publisher
    Department of Defense Inspector General
    Title
    Titan IV Requirements