Delta (rocket Family)

Delta (rocket Family)

Delta is a versatile family of expendable launch systems that has provided space launch capability in the United States since 1960. There have been more than 300 Delta rockets launched, with a 95 percent success rate. Two Delta launch systems – Delta II and Delta IV – are in active use. Delta rockets are currently manufactured and launched by the United Launch Alliance.

Read more about Delta (rocket Family):  Delta Origins, Launch Reliability, Delta Numbering System, Future Development

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Delta (rocket Family) - Future Development
... Currently development is focused human-rating the DeltaIV Heavy,which uses three Common Booster Cores to lift higher masses to orbit and escape velocity ...