Pathfinder-1: The first crewed Martian flyby

NASA is holding a Moon to Mars Architecture Art Challenge. This is my submission to the Mars segment: Pathfinder-1 flyby mission, the first crew to Mars.

Here's how it works: starting at the front you have an Orion connected to a TransHab, an inflatable living module where the crew will spend most of their time. Behind that is the power module with extra habitation space and rollout solar arrays. Behind that are the propulsion segments. Each one uses a combination of solar electric propulsion and chemical rockets. Pathfinder-1 carries one segment for each orbital maneuver. They are self sustaining, and are essentially an independent spacecraft. In these pictures it is entering Mars orbit so it has two segments: one for the orbital insertion, one for the trans-Earth injection. It has already used one for the trans-Mars injection burn. Pathfinder-1 would be roughly analogous to the Apollo 8 mission, testing the technologies and techniques necessary for more complicated Mars missions down the road, including crewed landings.