From Earth to Mars
The primary problem to be solved in a manned mission to Mars is the determination of the trajectory to take the spacecraft to Mars. This is fundamental in several ways, for it not only will be a major constraint in choosing the propulsion system, but it will also determine the total time for the journey.
The time for the round trip is a very important variable in terms of life support system design, weight of the fully loaded vehicle and medical considerations with respect to the crew.
The following sections include the study of the specific problem of an Earth-Mars trip and a proposed trajectory, complete with the mission timeline.