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Delta B

Retired American expendable rocket From Wikipedia, the free encyclopedia

Delta B
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The Delta B, or Thor-Delta B was an American expendable launch system used for nine orbital launches between 1962 and 1964.[3] A derivative of the Thor-Delta, it was a member of the Delta family of rockets.[4]

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The first stage was a Thor missile in the DM-21 configuration, and the second stage was the AJ10-118,[1] which was derived from the earlier Delta-A.[4] An Altair solid rocket motor was used as a third stage.[1]

All nine launches occurred from Cape Canaveral Air Force Station Launch Complex 17.[3] Most of the launches carried communications satellites, including Syncom-1[2] and Syncom-2.[2] Syncom-1 was intended to be the first satellite to be placed into a geosynchronous orbit, however the spacecraft malfunctioned prior to reaching this orbit.[5] Syncom-2 subsequently became the first geosynchronous satellite,[5] and was placed at 55° west of the Greenwich Meridian. The final launch failed due to third stage underperformance,[6] all other launches were successful.[3]

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Delta B launches

Delta B was launched nine times:[3]

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References

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