Abstract
In 2033, a ‘once every 15 years’ Earth Mars alignment occurs, allowing a free return trajectory, i.e. no propulsive maneuver is required at Mars to effect a return to Earth. NASA’s new Space Launch System (SLS), can launch the large propulsive stages and crew habitat necessary to this exciting mission. The flyby would serve as a precursor to a later Mars surface mission. With a trip time of 530 days, this 2033 crewed flyby mission could serve as a precursor to a later Mars surface mission. Only 4 elements are required; a long duration crew habitat, Earth return capsule, in-space stage and an Earth departure stage. In this report, trajectory, vehicle elements, operations, and challenges associated with a crew flight to Mars in the early 2030s are discussed.
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