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Titan IIIE-Centaur launch vehicle

Titan IIIE was a heavy-lift Titan III variant combining the Titan core and solid boosters with a high-energy Centaur upper stage. Seven vehicles flew from 1974 through 1977 for NASA planetary and solar-system missions, launching Helios 1 and 2, Viking 1 and 2, and Voyager 1 and 2.

Titan IIIE-Centaur launch vehicle
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Identity

Aliases
Titan IIIE-CentaurTitan 3E
Family Name
Titan IIIE
Full Name
Titan IIIE-Centaur launch vehicle
Status
retired
Type
rocket

Details

Description
Titan IIIE was a heavy-lift Titan III variant combining the Titan core and solid boosters with a high-energy Centaur upper stage. Seven vehicles flew from 1974 through 1977 for NASA planetary and solar-system missions, launching Helios 1 and 2, Viking 1 and 2, and Voyager 1 and 2.
First Flight Year
1,974
Last Flight Year
1,977
Operator
Parent Vehicle Family
Propulsion Configurations
  • Entries
    • Nested value
    • Nested value
    • Nested value
    • Nested value
    Name
    Titan IIIE-Centaur D-1T configuration
    Notes
    Exact Titan IIIE-Centaur stack used for NASA's planetary missions: two LR87-AJ-11 engines on the Titan first stage, two UA-1205 solid strap-on motors, one LR91-AJ-11 on the second stage, and two RL10A-3-3A engines on Centaur D-1T. Mission-specific Helios fourth-stage motors and spacecraft propulsion are intentionally excluded from the launch-vehicle record.
Rocket Specs
Reusability
expendable
Stages Count
3
Strap On Boosters Count
2

Links

Assets & Meta

Creation Time
July 13, 2026 at 08:31:40 UTC
Updated Time
August 23, 2026 at 20:36:21 UTC

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Search Name
Titan IIIE-Centaur launch vehicle Titan IIIE-Centaur Titan 3E