ocr: - -: PERSPECTIVES AND PROJECTS DEIMOS PHOVECIE - The Deimos project MARS ONE PROJECT The Deimos project, named after one of Mars's two satellites, was developed by McDonnell Douglas. The Mars craft would be assembled in Earth orbit, the components being launched aboard a rocket with reusable boosters. Ten launches would be required to place 3850 tons of fuel in orbit for the journey to and from Mars. The assembled spacecratt would nave a truncated-cone shape, 24 meters in diameter at the base, surrounded by eight liquid hydrogen fuel tanks, with liquid oxygen in the central element. It would p ...