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Thor-Delta E1 Launch Vehicle

Thor-Delta E1 paired the enlarged DSV-3E second stage with a FW-4D solid third stage. Seventeen vehicles flew for NASA from July 1966 through April 1971, launching lunar and interplanetary explorers, communications and weather satellites, solar probes, and European science missions. All reached Earth orbit or an escape trajectory, although several experienced launch or spacecraft propulsion anomalies that changed the planned orbit.

Identity

Aliases
Delta E-1Thor Delta E-1Thrust-Augmented Improved DeltaTAIDDSV-3E/FW-4D
Family Name
Thor-Delta E1
Full Name
Thor-Delta E1 Launch Vehicle
Reusability
expendable
Slug
thor-delta-e1
Status
retired
Type
rocket
Variant Name
E1

Details

Description
Thor-Delta E1 paired the enlarged DSV-3E second stage with a FW-4D solid third stage. Seventeen vehicles flew for NASA from July 1966 through April 1971, launching lunar and interplanetary explorers, communications and weather satellites, solar probes, and European science missions. All reached Earth orbit or an escape trajectory, although several experienced launch or spacecraft propulsion anomalies that changed the planned orbit.
First Flight Year
1,966
Last Flight Year
1,971
Manufacturer
Operator
Parent Vehicle Family
Stages Count
3

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Creation Time
July 18, 2026 at 05:52:17 UTC
Updated Time
July 18, 2026 at 05:52:17 UTC