Delta (rocket family)

Delta Family
Delta II through Delta IV
General information
TypeExpendable launch system
Manufacturer
StatusOut of service
History
Introduction date13 May 1960 (Echo 1)
First flightMay 13, 1960 (1960-05-13)
Retired9 April 2024 (NROL-70)

The Delta rocket family was a versatile range of American rocket-powered expendable launch systems that provided space launch capability in the United States from 1960 to 2024. Japan also launched license-built derivatives (N-I, N-II, and H-I) from 1975 to 1992. More than 300 Delta rockets were launched with a 95% success rate. The series was phased out in favor of the Vulcan Centaur, with the Delta IV Heavy rocket's last launch occurring on April 9, 2024.[1]

  1. ^ "Delta IV Heavy – NROL-70". Next Spaceflight. 9 February 2024. Retrieved 10 February 2024.

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