Visualization of the Multidimensional Human Interplanetary Mission Design Space

摘要

TYPICAL human interplanetary mission design studies to datenhave had difficulty visualizing the outbound and return transferndata simultaneously. For a round-trip mission, there are too manynindependent variables to display on two-dimensional plots, such asn“pork-chop plots” (contour plots of required C3 or u0001V for an interplanetaryntrajectory). The two independent variables on this plot arendeparture date and arrival date (or time of flight, TOF). However, ancomplete human mission includes two transfers connected by thensurface stay, resulting in four independent variables: Earth departurendate, destination arrival date, destination departure date, and Earthnarrival date (the latter three can be replaced with outbound TOF,nsurface stay time, and return TOF). To visualize the design spacenusing two-dimensional plots, many studies eliminate one or more ofnthese variables.However, the mission designer must be able to look atnall three segments simultaneously to determine their interactions andnto select the overall optimal mission scenario.