AJ10

AJ10

AJ10-118K
Country of origin	United States
Date	1957–present
Manufacturer	Aerojet, Aerojet Rocketdyne
Application	Upper stage/spacecraft propulsion
Status	In use
Liquid-fuel engine
Propellant	N 2O 4 / Aerozine 50
Cycle	Pressure-fed engine
Configuration
Chamber	1
Performance
Thrust, vacuum	43.7 kN
Chamber pressure	7–9 bars (700–900 kPa)[1]
Specific impulse, vacuum	from 270 seconds (2.6 km/s) on AJ10-101[2] to 319 seconds (3.13 km/s) on AJ10-118K [3]
Dimensions
Diameter	0.84 m
Dry weight	90–100 kg
Used in
Vanguard (Delta-A) Thor/Atlas (Able) Thor-Delta/Delta A-N, Super-Six (Stage 2) Thor-Ablestar (Ablestar) Delta 0100/1000/2000/3000 (Delta-F) Delta 4000/5000/II (Delta-K) Titan III (Transtage) Apollo (service module) Space Shuttle (Orbital Maneuvering System) Orion (service module)

The AJ10 is a hypergolic rocket engine manufactured by Aerojet Rocketdyne (previously Aerojet). It has been used to propel the upper stages of several launch vehicles, including the Delta II and Titan III. Variants were and are used as the service propulsion engine for the Apollo command and service module, in the Space Shuttle Orbital Maneuvering System, and on the European Service Module – part of NASA's Orion spacecraft.