The N-II or N-2 was a derivative of the American Delta rocket, produced under licence in Japan. It replaced the N-I-rocket in Japanese use. It used a Thor-ELT first stage, a Delta-F second stage, nine Castor SRMs, and on most flights either a Star-37E or Burner-2 upper stage, identical to the US Delta 0100 series configurations. Eight were launched between 1981 and 1987, before it was replaced by the H-I, which featured Japanese-produced upper stages. All eight launches were successful.
Launch history
See also Comparison of orbital launchers families Delta rocket H-I H-II H-IIA N-I rocket PGM-17 Thor
References
Wade, Mark. "Delta". Encyclopedia Astronautica. Archived from the original on 2013-08-17. Retrieved 2008-08-31. McDowell, Jonathan. "Thor". Orbital and Suborbital Launch Database. Jonathan's Space Report. Archived from the original on 2020-08-01. Retrieved 2008-08-31. Krebs, Gunter. "N-2". Gunter's Space Page. Retrieved 2008-08-31.