NASA Administrator Jim Bridenstine speaks with members of the media in front of the massive liquid hydrogen tank, which comprises almost two-thirds of the core stage and holds 537,000 gallons of liquid hydrogen cooled to minus 423 degrees Fahrenheit. Innovative processes are part of core stage manufacturing including joining the thickest pieces of aluminum ever with self-reacting friction stir welding. The liquid oxygen tank and liquid hydrogen tanks have the thickest joints ever made with self-reacting friction stir welding.
Image Credit: NASA/Jude Guidry