Staged-Combustion Engines

Blue Origin's methane/LOX oxidizer-rich staged-combustion engine, which powers both the ULA Vulcan Centaur first stage and Blue Origin's own New Glenn booster.

A LH2/LOX staged-combustion engine that powers the first stage of Japan's H-IIA and H-IIB launch vehicles.

The Kuznetsov oxidizer-rich staged-combustion RP-1/LOX engine that powered the Soviet N1 Moon rocket — thirty on the first stage alone — across its four failed launches.

A lightweight high-performance oxidizer-rich staged-combustion RP-1/LOX engine developed in the Soviet N1 program for the upgraded (never-flown) N1F; refurbished units later flew (as the AJ-26) on the first-generation Antares.

SpaceX's methane/LOX full-flow staged-combustion engine for Starship and its Super Heavy booster — one of very few full-flow engines ever flown, designed for rapid reuse. Thrust has risen across versions.

The most powerful liquid-propellant rocket engine ever flown — a four-chamber oxidizer-rich staged-combustion RP-1/LOX engine used on the Energia boosters and (as the RD-171) the Zenit first stage.

A Russian two-chamber oxidizer-rich staged-combustion RP-1/LOX engine (derived from the RD-170) that powered the Atlas V first stage.

A reusable fuel-rich staged-combustion LH2/LOX engine developed for the Space Shuttle (as the SSME) and now expended on the SLS core stage; among the highest-efficiency hydrogen engines flown.

China's kerosene/LOX oxidizer-rich staged-combustion engine, used in the boosters of Long March 5 and the cores of Long March 6/7.