Building on last year's hard-earned experience, The University of Alabama in Huntsville (UAH) Rover Team has refined Carbon Charger, their carbon fiber tricycle vehicle, for the 2015 NASA Human Exploration Rover Challenge on Friday, April 17, and Saturday, April 18, at the U.S. Space & Rocket Center. "We have made several modifications this year, with the basic goal of fixing the problematic systems which we discovered last year," says first-year team lead Brian Mixon, a mechanical engineering senior who joined the team in 2013 and enjoys working with composites. "We have reworked the entire front drive train."