Added units, initial engineering calcs
Added units, initial engineering calcs

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