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AsteriaStar
Rocket engine

Aestus

Rockets

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

Propellants

MMH / N2O4

Powers

Ariane 5

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • ArianespaceArianespace SA

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

  • ESAEuropean Space Agency

    European missions, observatories, and space science imagery.