Concentric electric-motor driveshaft system and method

An electric-motor system comprising:

• a forward electric-motor assembly;
• a rear electric-motor assembly arranged in series relative to the forward electric-motor assembly;
• a forward electric-motor driveshaft splined to the forward electric-motor assembly and comprising a forward electric-motor drive-shaft shear section;
• and
• a rear electric-motor driveshaft splined to the rear electric-motor assembly and comprising a rear electric-motor drive-shaft shear section, at least a portion of the rear electric-motor driveshaft arranged concentrically within the forward electric-motor driveshaft;
• wherein the forward electric-motor driveshaft and the rear electric-motor driveshaft rotate about a common axis;
• wherein the forward electric-motor driveshaft comprises an inner-diameter spline splined to an outer-diameter spline of an input gear;
• and
• wherein the rear electric-motor driveshaft comprises an outer-diameter spline splined to an inner-diameter spline of the input gear.