Author Topic: Orbital ATK make progress toward Return To Flight of Antares rocket  (Read 17805 times)

Offline russianhalo117

  • Senior Member
  • *****
  • Posts: 4460
  • AR USA / Berlin, DE / Moscow, RF
  • Liked: 1059
  • Likes Given: 573
Maybe this is a stupid question, but why is there both an RD-181 designation, and an RD-191 designation? Are these engines significantly different? Or is there an export issue where the engine has to be re-designated?
RD-181 is foreign export version of internal RD-191


Tags: