Delta J


Delta J
Delta J
Launch of the Delta J with Explorer 38
Launch of the Delta J with Explorer 38
Function Expendable launch system
Country of origin  United States
Launch history
Status Retired
Launch sites Vandenberg SLC-2E
Total launches 1
Successes 1
Launch date 4 July 1968

The Delta J, or Thor-Delta J was an American expendable launch system of the late 1960s. Only one was launched, with the Explorer 38 spacecraft. It was a member of the Delta family of rockets.

The Delta J was derived from the Delta E. The first stage was a Thor missile in the DSV-2C configuration, with three Castor-1 solid rocket boosters clustered around it. A Delta E was used as the second stage. The Altair third stage of the Delta E was replaced with the more powerful Star-37D SRM.

The only Delta-J to fly was launched from Vandenberg Air Force Base Space Launch Complex 2E on 4 July 1968. It successfully placed the Explorer 38 satellite into medium Earth orbit.

References


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