American aerospace draughtsman (1914–1994) who drew the Star Trek Blueprints and the Star Fleet Technical Manual, both published in 1975 and hugely influential on later depictions of Starfleet.
Franz Joseph Schnaubelt, who published as Franz Joseph, was an American designer who had spent his career in the aerospace industry. In retirement he began drawing plans of the Enterprise for a local fan group.
With Gene Roddenberry's approval the work was published by Ballantine in 1975 as the Star Trek Blueprints, a set of deck-by-deck plans of the ship, followed the same year by the Star Fleet Technical Manual. The manual set out uniforms, equipment, insignia and several new classes of starship, and became a bestseller.
His designs were not treated as binding by later productions, but his ship classes can be glimpsed on display screens in the early films, and they became the basis of the board game Star Fleet Battles.