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Some very intersting tidbits about #Calllisto, the #Arianegroup re-use prototype.
Especially the engine:
🔹Height: 13m, diameter: 1,1m
🔹Take-off weight: 3,6 tons
🔹Assembled in Japan(!)
🔹Germany: Landing gear, control surfaces,
🔹France: LH2 tank
🔹Japan: Engine, LOX tank