MMH / N2O4

Overview

A storable hypergolic combination used in upper stages and orbital-maneuvering systems where reliable restart matters, such as the Ariane 5 storable upper stage.

Knowledge connections

• Propellant ofAestus
• Associated withBipropellant Propulsion

Sources

Facts on this topic will be cited from these primary and reference sources.

• 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.