Rocketdyne's J-2 was America's largest production liquid hydrogen fueled rocket engine before the Space Shuttle main engine (SSME), and is being revived in support of NASA's return to the Moon. The J-2 was a major component of the Saturn V rocket....

Saturn V

Saturn INT-21

Rocketdyne F-1

Bipropellant rocket engine

flown

Saturn V

The F-1 is a rocket engine developed by Rocketdyne and used in the Saturn V. Five F-1 engines were used in the S-IC first stage of each Saturn V, which served as the main launch vehicle in the Apollo program. The F-1 was originally developed by...

Saturn INT-21

RD-180

Bipropellant rocket engine

flown

The RD-180 is a dual-combustion chamber, dual nozzle, Russia-developed rocket engine, derived from the RD-170 used in Zenit rocket. Like the four chamber RD-170, the combustion chambers of the RD-180 share a single turbopump unit. Rights to employ...

RD-170

Bipropellant rocket engine

flown

The RD-170 is the world's most powerful multi-nozzle multi-chamber liquid bipropellant rocket engine. It burns the Russian equivalent of RP-1 fuel and LOX oxidizer in four combustion chamber supplied by a single turbo pump according to a staged...

Kestrel

Bipropellant rocket engine

Falcon 1

The Kestrel engine is an RP-1/liquid oxygen pressure-fed rocket engine. The Kestrel engine was developed by SpaceX for upper stage use on the Falcon 1 rocket. Kestrel was built around the same pintle architecture as the Space X Merlin engine but...

Merlin

Bipropellant rocket engine

flown

Falcon 1

Merlin is a rocket engine design developed by SpaceX for use on its Falcon 1 and Falcon 9 rockets. Merlin uses RP-1 and liquid oxygen as propellants in a gas-generator power cycle. The Merlin engine is designed for sea recovery and reuse. The...

NK-33

Bipropellant rocket engine

The NK-33 and NK-43 were rocket engine designed and built in the late 1960s and early 1970s by Kuznetsov. They were intended for the ill-fated Russian N-1 rocket moon shot. The NK-33 engine achieves the highest thrust-to-weight ratio of any Earth...

M-1

Bipropellant rocket engine

study

Aerojet's M-1 was the largest and most powerful liquid hydrogen-fueled rocket engine to be designed and built. It offered a baseline thrust of 1.5 million pounds force and 1.8 million pounds force as its immediate growth target. The M-1 was larger...

test fired

H-1

flown

The H-1 engine is a 200,000 lbf (890 kN) thrust LOX/RP-1 engine, used alone in the first stages of some Thor-Delta rockets and the Jupiter rocket. It is derived from the Navaho missile, and was simplified and improved for use in the S-IB first stage...

HM7B

Bipropellant rocket engine

The HM7B is a european cryogenic rocket engine which currently powers the upper stage of the Ariane 5 ECA, ESC-A. The HM7 engine, built upon the development work of HM4, first flew in 1979, powering the third stage of the Ariane 1. The evolved HM7B...

RB545

study

The RB545 was an air-breathing rocket engine that was proposed to propel a British space shuttle (see HOTOL) to orbit using a single stage. The exact details of this engine are covered by the UK's Official Secrets Act and there is consequently...

RD-58

The RD-58 (manufacturer designation 11D58) is a rocket engine, developed in the 1960s by OKB-1, now RKK Energia. The engine was initially created to power the Block D stage of the Soviet Union's abortive N-1 rocket. Derivatives of this stage are now...

RD-8

Bipropellant rocket engine

The RD-8 engine was developed by Yuzhnoye Design Bureau for the second stage of the Zenit rocket. It has four hinged chambers and a single turbopump unit. The fuel pair is LOX/kerosene. Vacuum thrust is 78.5 kN and its specific impulse in vacuum is...

RL-10

Bipropellant rocket engine

flown

The RL-10 was America's first liquid hydrogen fueled rocket engine, and an updated version is used in several current launch vehicle. Six RL-10 engines were used in the S-IV second stage of the Saturn I rocket. One or two RL-10 engines are used in...

RS-27A

Bipropellant rocket engine

flown

The RS-27A is a medium-sized rocket engine developed by Rocketdyne for use on the Delta II and Delta III rocket. It is fueled by a kerosene / LOX mixture in a gas-generator cycle. The engine is a modified version of its predecessor, the RS-27; its...

RS-68

Bipropellant rocket engine

flown

The Rocketdyne RS-68 (Rocket System 68) is a liquid hydrogen / liquid oxygen engine, currently producing a thrust of 663,000 lbf (2.9 MN) at sea level and 758,000 lbf (3.3 MN) in a vacuum, both at 102% power. Developed from the late 1990s into the...

RS-83

Bipropellant rocket engine

The RS-83 was a rocket engine design for a reusable liquid hydrogen/liquid oxygen rocket larger and more powerful than any other. The RS-83 was designed to last 100 missions, and was intended for use on the first stage of a two-stage-to-orbit...

RZ2

Bipropellant rocket engine

The RZ2 was a British design for a LOX / kerosene liquid fuel rocket engine to power the Blue Streak missile. The design was a development of the Rolls-Royce RZ1 rocket engine, which had in turn been a development by Rolls-Royce of the Rocketdyne...

Reaction Motors XLR-99

Bipropellant rocket engine

flown

The XLR99 engine was the first large, throttle, restartable liquid propellant rocket engine. It was developed beginning in the 1950s by the Reaction Motors Division of Thiokol Chemical Company to steer the X-15 research aircraft. It could deliver up...

Space Shuttle main engine

Bipropellant rocket engine

flown

The Space Shuttle Main Engines (SSMEs) are the three main engines on the Space Shuttle orbiter. They are constructed by Pratt & Whitney's Pratt & Whitney Rocketdyne Division. The SSME is also designated as the RS-24 for engineering purposes....

Star 48

The Star 48 is a type of solid rocket motor used by both the Space Shuttle and the New Horizons probe. It is used almost exclusively as an upper stage. It was developed primarily by Thiokol Propulsion, and now manufactured by Boeing. The "-48"...

Vinci

Bipropellant rocket engine

Vinci is a European Space Agency cryogenic rocket engine currently under development. It is designed to power the new upper stage of Ariane 5, ESC-B, and will be the first European re-ignitable cryogenic upper stage engine, raising the launcher's...

Vulcain

Bipropellant rocket engine

flown

Vulcain is a family of European cryogenic first stage rocket engine for the Ariane 5. The development of Vulcain, assured by a European collaboration, began in 1988 with the Ariane 5 rocket program. It first flew in 1996 powering the ill-fated...

RD-107