R-4D-11 490 N Bipropellant Rocket Engine
Aerojet Rocketdyne (L3Harris)
490 N (110 lbf) bipropellant rocket engine from the R-4D family originally developed for the Apollo programme.
Key figurescomparable across the catalogue
- Thrust
- 490 N
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Thrust
- 490 N (110 lbf)
- Type
- Bipropellant rocket engine
- Propellants
- Hydrazine or MMH fuel with NTO oxidizer
- Family
- R-4D
About
The R-4D-11 is a 490 N (110 lbf) bipropellant rocket engine.
L3Harris’ 100-pound-thrust R-4D, originally developed for the Apollo missions where it played a key role in the Apollo 13 rescue, has evolved into the world’s most reliable apogee insertion engine. R-4D engine variants have flown over 390 apogee-insertion missions for geostationary-orbiting satellites, with a 100 percent success rate.
Bipropellant engines feed hydrazine or monomethylhydrazine (MMH) propellants and nitrogen tetroxide (NTO) oxidizer into a combustion chamber, where they ignite on contact to generate thrust. Bipropellant thrusters typically are used for in-space maneuvering for large vehicles including the crew-carrying Orion and Starliner spacecraft, as well as International Space Station servicing vehicles.
L3Harris builds monopropellant and bipropellant propulsion systems for applications including spacecraft maneuvering, orbit raising, deep space navigation, planetary landing, and rocket upper stage propulsion, using storable propellants that remain stable in liquid form without active cooling.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.