Delta E

	Launch of a Delta E with Pioneer 6
Has use	Expendable launch system
Country of origin	United States
Launch history
Status	Retired
Launch sites	Cape Canaveral LC-17; Vandenberg SLC-2E
Total launches	23
Success(es)	23
First flight	6 November 1965
Last flight	1 April 1971

The Delta E, or Thor-Delta E was an American expendable launch system used for twenty-three orbital launches between 1965 and 1971. It was a member of the Delta family of rockets.

The first stage was a Thor missile in the DSV-2C configuration, and the second stage was the Delta-E, which was derived from the earlier Delta-A. Three Castor-1 solid rocket boosters were clustered around the first stage. Two different solid-fuel upper stages were available; an Altair-2 was used on the baseline version, however this could be replaced with an to increase performance. A Delta E with the FW-4D upper stage was designated Delta E1. Six flights used the Delta E configuration and seventeen used the Delta E1.

Delta E rockets were launched from Cape Canaveral Air Force Station Launch Complex 17 and Vandenberg Air Force Base Space Launch Complex 2E. All 23 flights were successful. On December 16 1965, a Delta E launched the Pioneer 6 space probe.^[1]^[2]

References[]

^ Wade, Mark. "Delta". Archived from the original on 2008-07-24.
^ Krebs, Gunter. "Thor Family". Gunter's Space Page. Retrieved 2021-12-21.

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[1] Wade, Mark. "Delta". Archived from the original on 2008-07-24.

[2] Krebs, Gunter. "Thor Family". Gunter's Space Page. Retrieved 2021-12-21.

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v t Orbital launch systems developed in the United States
Active	Antares 230+ Atlas V Delta IV Heavy Falcon 9 Block 5 Falcon Heavy Firefly Alpha LauncherOne Minotaur I IV V C Pegasus XL Astra Rocket 3
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* - Japanese projects using US rockets or stages ** - uses Russian engines