Delta (rocket family)

Delta Family
Delta II through Delta IV
Role Expendable launch system
with various applications
Manufacturer United Launch Alliance
First flight May 13, 1960 (1960-05-13)
Introduction 1960
Retired 2024
Status Out of service

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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