Propellant
LH2 / LOX
Also known as Hydrolox, Hydrogen/LOX
Rockets
Overview
Liquid hydrogen burned with liquid oxygen — the highest-performing chemical propellant by specific impulse, but low-density and deeply cryogenic. Used by the RS-25, RL10, Vulcain, and LE-7/LE-9.
Knowledge connections
- Propellant ofS-II (Saturn V second stage)
- Propellant ofS-IVB (Saturn upper stage)
- Propellant ofSLS Core Stage
- Propellant ofAriane 5 core stage (EPC)
- Propellant ofJ-2
- Propellant ofRS-25
- Propellant ofRS-68
- Propellant ofRL10
- Propellant ofVulcain 2
- Propellant ofVinci
- Propellant ofHM7B
- Propellant ofBE-3
- Propellant ofYF-77
- Propellant ofLE-7A
- Propellant ofLE-9
- Propellant ofCE-20
- Associated withPropellant Depot
- Associated withCryogenic Fuel Storage
- Associated withOrbital Refuelling
- Associated withSpecific Impulse
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.