EntityQ47010392· pop 7· linked from 166 articlesPrometheusSign in to savereusable rocket engineConnectionsmethaneEntityliquid oxygenEntityRS-27EntitySTAREntitypressureEntityEuropean Space AgencyEntitydigital object identifierEntityPrometheusEntitynitric acidEntity3D printingEntitylaunch vehicleEntityVernonEntityrocket engineEntityAriane 5EntityPolar Satellite Launch VehicleEntitydinitrogen tetroxideEntityArianespaceEntityGovernment of the French RepublicEntityliquid hydrogenEntitybackronymEntityCategoriesEuropean space programmesRocket engines using methane propellantSpaceflight technologySpace programs