> The NK-33 was and still is a masterpiece. Its a bit aggressive to label this engine a masterpiece when it has never actually launched successfully. I don't

> The NK-33 was and still is a masterpiece. Its a bit aggressive to label this engine a masterpiece when it has never actually launched successfully. I don't even think there has been an attempted launch with the NK-33, just ground tests for the N-1F rocket which was cancelled. Interesting note - the second attempted launch of the N-1 rocket, which used the original version of the NK-33 (NK-15) resulted in the largest non-nuclear explosion of all time. There is more to an engine than power to weight ratio, such as actually successfully putting a rocket in space.