Launch of the Delta J with Explorer 38
|Function||Expendable launch system|
|Country of origin||United States|
|Launch sites||Vandenberg SLC-2E|
|Launch date||4 July 1968|
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.
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