Thor DSV-2U

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Thor DSV-2U
Thor DSV-2U launch with DMSP-5D-F5 satellite.jpg
Launch of the last Thor DSV-2U carrying DMSP-5D1 F5
Function Expendable launch system
Country of origin  United States
Launch history
Status Retired
Launch sites Vandenberg SLC-10W
Total launches 5
Successes 4
Failures 1
First flight 1976-09-11
Last flight 1980-07-15

The Thor DSV-2U or Thor LV-2F Star-37XE Star-37S-ISS was an American expendable launch system used to launch five DMSP weather satellites between 1976 and 1980. It was a member of the Thor family of rockets, and a derivative of the Thor DSV-2.

The first stage was a Thor missile in the DM-19 configuration. A Star-37XE was used as the second stage, and the third stage was a Star-37S-ISS. All five launches were conducted from Space Launch Complex 10W at the Vandenberg Air Force Base. The final launch failed due to a malfunction during separation of the second and third stages which led to the spacecraft's wiring being ripped out.


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