Systems and methods for helmet

A helmet comprising

• a helmet shell enclosing a cavity configured to receive the head of an operator, the helmet shell includes:
• an exterior surface;
• and
• a front opening extending through the exterior surface;
• and
• a face shield having at least one pivot fitting;
• a slidable pivot mechanism rotatably and translationally coupling the face shield with the helmet shell, the slidable pivot mechanism includes:
• a face shield shuttle translationally coupled with the helmet shell, the face shield shuttle includes a bearing configured to receive the at least one pivot fitting, the bearing and at least one pivot fitting permit rotation of the face shield relative to the helmet shell and the face shield shuttle;
• and
• wherein the face shield shuttle permits translational movement of each of the bearing, the at least one pivot fitting, and the face shield relative to the helmet shell.

A helmet comprising:

• a helmet shell enclosing a cavity configured to receive the head of an operator, the helmet shell includes:
• a front opening extending through the exterior surface;
• a shock absorbing stacked composite, the shock absorbing stacked composite includes:
• an inner shell proximate the cavity, the inner shell having an exterior facing profile;
• an outer shell extending over the inner shell, the outer shell having an interior facing profile;
• a pliable tube array mat having a plurality of polymer tubes interconnected along tube lengths, the pliable tube array mat is interposed between the inner shell and the outer shell;
• and
• wherein the exterior facing profile of the inner shell and the interior facing profile of the outer shell deform the pliable tube array mat into a dome profile complementary to the exterior and interior facing profiles.