Shock load attenuation

A parachute assembly, comprising:

• a first line;
• a second line;
• and
• a shock load attenuation device, wherein the shock load attenuation device comprises:
• a crushable material;
• a first compartment in the crushable material surrounding the first line;
• and
• a second compartment in the crushable material surrounding the second line,
• wherein, in response to the first line being acted upon by a first force and the second line being acted upon by a second force, a first loop in the first line is configured to slide along the second line and a first loop in the second line is configured to slide along the first line, crushing the crushable material.

A method of assembling a parachute assembly, comprising:

• passing a first end of a first line through a first compartment of a shock load attenuation device;
• looping the first end of the first line around a second line thereby forming a first loop of the first line;
• passing the first end of the first line back though the first compartment of the shock load attenuation device;
• coupling the first end and a second of the first line to a same location on a canopy of a parachute of the parachute assembly;
• passing a first end of the second line through a second compartment of the shock load attenuation device;
• looping the first end of the second line around the first line thereby forming a first loop of the second line;
• passing the first end of the second line back though the second compartment of the shock load attenuation device;
• and
• coupling the first end and a second of the second line to a same location on a riser of the parachute assembly,
• wherein, when the first line is acted upon by a first force and the second line is acted upon by a second force, the first loop in the first line is configured to slide along the second line and the first loop in the second line is configured to slide along the first line crushing a crushable material of the shock load attenuation device.