3 ms·

Are you were claiming that there were no failures of the NK-33 engine on any of the four N1 flights that exploded during first stage burn?

• avmich 12y ago
  Yes. NK-33 never flew on N-1. They were intended to fly on N-1 in its fifth flight - which never happened, because Glushko closed the program after becoming the head of the Energiya company.
  • marze 12y ago
    So before the engines were obtained by Orbital, the NK-33 had never even been flight tested?
    • avmich 12y ago
      Before the engines flew for the first time, yes they never flew before. And Antares is the first rocket where those engines have flied - though not the only one rocket already.