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; 64 years ago (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.