Aestus

Overview

A restartable pressure-fed engine burning the storable hypergolic combination MMH/N2O4, used on the Ariane 5 EPS storable upper stage for precise orbit insertion.

Components & hardware

Knowledge connections

• PowersAriane 5
• Uses propellantMMH / N2O4

Sources

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

• ArianespaceArianespace SA

  Ariane and Vega launch-vehicle families — user's manuals and mission data.

• ESAEuropean Space Agency

  European missions, observatories, and space science imagery.