To streamline the assembly process, Ariane 5’s vehicle equipment bay and ESC-A cryogenic upper stage are installed as a single unit atop its cryogenic core stage.
The Ariane 5 ECA launcher version utilizes the ESC-A cryogenic upper stage, which is powered by an HM7B engine.
Arianespace’s Ariane 5 is the world reference for heavy-lift launchers, able to carry payloads weighing more than 10 metric tons to geostationary transfer orbit (GTO) and over 20 metric tons into low-Earth orbit (LEO) – with a high degree of accuracy mission after mission.
This performance ensures that Ariane 5 will be able to loft the heaviest spacecraft either in production or on the drawing boards, and enables Arianespace to match up most telecommunications satellites for highly efficient dual launches – a capability that has been proven by the company in Ariane-series missions since the 1980s.
It was so much fun being able to create our own world where we could be whoever we wanted to be and do whatever we wanted to do.
The Ariane 5’s vehicle equipment bay integrates the guidance, stage sequencing, telemetry, tracking and safety systems.
Two redundant ring laser gyroscopes are used for inertial reference and guidance during the mission.
Ariane 5 utilizes two solid boosters, each standing more than 30 meters tall with 237.8 metric tons of propellant.
The boosters are ignited on the launch pad once the main cryogenic stage’s Vulcain engine has stabilized its thrust output.