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.
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.
As the central element of Ariane 5, the core cryogenic stage serves as one of the launcher’s key propulsion systems.
It carries a propellant load of 132.27 metric tons of liquid oxygen and 25.84 metric tons of liquid hydrogen to feed the stage’s Vulcain main engine.
During the ballistic phase, roll, pitch and yaw control uses clusters of gaseous hydrogen thrusters, while gaseous oxygen thrusters also are employed for longitudinal boosts.
They deliver more than 90 percent of the launcher’s total thrust at the start of flight and burn for 130 sec.
before they are separated over a designated zone of the Atlantic Ocean.
The Vulcain burns for just under 600 seconds, providing up to 116 metric tons of thrust in vacuum.
The stage has an overall length of 30.5 meters from the Vulcain main engine’s nozzle to the forward (upper) skirt.Dating sims (or dating simulations) are a video game subgenre of simulation games, usually Japanese, with romantic elements.