NK-15
The NK-15 is a rocket engine designed and built in the late 1960s by the Kuznetsov Design Bureau. The NK designation is derived from the initials of chief designer Nikolay Kuznetsov. The NK-15 was among the most powerful LOX/RP-1 rocket engines when it was built, with a high specific impulse and low structural mass. It was intended for the ill-fated Soviet N-1 Moon rocket.History
The engine equipped the N1 rocket which had four consecutive launch failures all due to this engine. Its successor the NK-33 allowing multiple fire resistance tests and increased life service was to be used on the N1F, a new version of the N1, but the program was canceled.Versions
