N-1

The N1/L3 was a super heavy-lift launch vehicle intended to deliver payloads beyond low Earth orbit. The N1 was the Soviet counterpart to the US Saturn V and was intended to enable crewed travel to Earth's Moon and beyond, with studies beginning as early as 1959. All of the four flown N1 Block A first stages failed because of a lack of static test firings that did not reveal plumbing issues and other adverse characteristics with the large cluster of thirty engines and its complex fuel and oxidizer feeder system.