Armored cab for blast protection

A cab lower surface for an armored cab comprising:

• a right hull having a right hull peripheral edge configured to couple to a right side frame of the armored cab, a right hull interior edge, and a right hull lower boundary located between the right hull peripheral edge and the right hull interior edge;
• a center tunnel extending from the right hull interior edge and having an elliptical exterior curvature, wherein the center tunnel includes a center tunnel upper boundary coincident with a longitudinal axis along an entire length of the cab lower surface;
• a left hull extending from the center tunnel, the left hull having a left hull interior edge coupled to the center tunnel, a left hull peripheral edge configured to couple to a left side frame of the armored cab, and a left hull lower boundary located between the left hull interior edge and the left hull peripheral edge;
• a right interior floor extending from the right hull peripheral edge to the right hull interior edge and spaced above the right hull lower boundary;
• and
• a left interior floor extending from the left hull peripheral edge to the left hull interior edge and spaced above the left hull lower boundary.

An exterior shell for an armored cab having a longitudinal axis and a transverse axis comprising:

• a right side panel extending parallel to the longitudinal axis;
• a left side panel extending parallel to the longitudinal axis;
• a rear panel extending parallel to the transverse axis;
• and
• a cab lower surface extending between the right side panel and the left side panel, the cab lower surface comprising:
• a right hull transitioning at a right inflection point to define an integral right front plane defining a forward facing surface of the right side frame, wherein the right front plane is convexly curved upwards,
• a left transitioning at a left inflection point to define an integral left front plane defining a forward facing surface of the left side frame, wherein the left front plane is convexly curved upwards, and
• a center tunnel extending along the longitudinal axis, the center tunnel having an exterior curvature with a variable radius as the center tunnel extends along the transverse axis of the exterior shell, wherein the center tunnel is configured to act as a pressure vessel in the event of an explosion beneath the armored cab.