Added more input/out variables, added comments for calculation workflow
Added more input/out variables, added comments for calculation workflow

HyperloopTeam/Hyperloop,kishenr12/Hyperloop,UwHyperloop/Hyperloop,jcchin/Hyperloop,JustinSGray/Hyperloop,whiplash01/Hyperloop,malachiw7/OpenMDAO-Hyperloop,paulopperman/Hyperloop,whiplash01/Hyperloop,JustinSGray/Hyperloop,kishenr12/Hyperloop,paulopperman/Hyperloop,jcchin/Hyperloop,malachiw7/OpenMDAO-Hyperloop,UwHyperloop/Hyperloop,HyperloopTeam/Hyperloop