Hybrid Impact Passive Energy Absorber

A hybrid impact passive energy absorber (100), comprising:

• a rigid housing (110) comprising:
• a mounting base;
• and
• a body affixed to the mounting base further comprising a first end (111a), a second end (111b) opposite the first end, a contiguous chamber within the body formed around a chamber axis spanning the first end and the second end, wherein the chamber further comprises:
• a chamber central portion (140) partially bounded by a first central chamber wall (145a) and a second chamber wall (145b);
• a first chamber end portion bounded by the body first end and the first central chamber wall;
• and
• a second chamber end portion bounded by the body second end and the second central chamber wall;
• a shaft (170) comprising a first end and a second end, the shaft disposed at least partially within the housing chamber along the chamber axis between the housing first end and housing second end;
• an internal mass (120) comprising a central bore configured to receive the shaft therethrough, the internal mass disposed within the chamber central portion between the first central chamber wall and the second central chamber wall;
• a first helical spring (130a) surroundingly disposed upon the shaft between and abutting both the chamber first end and a first side of the internal mass;
• and
• a second helical spring (130b) surroundingly disposed upon the shaft between and abutting both the chamber second end and a second side of the internal mass.