Accession Number : ADD001397

Title :   Nonlinear Energy Absorption System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Rosenberg,Bruce L

Report Date : 10 Sep 1974

Pagination or Media Count : 4

Abstract : The patent describes a military aircraft ejection seat providing normal cushion comfort under ordinary conditions of use and effectively absorbing the inertial energy of the pilot when the seat ejects and undergoes a square wave acceleration. The seat comprises a plurality of cylindrical shaped cushion-like rate nonlinear support elements between a metal seat pan and the buttocks of a pilot. The cushion-like supports are arranged in a hexagonal pattern and are provided with a helical spring that cushions the pilot in ordinary flight conditions and a flow-dilatant suspension that substantially resists compression only during high rates of compression.

Descriptors :   *Ejection seats, *Patents, Human factors engineering, Cushioning, Aircraft equipment, Helical springs, Compressive properties, Military equipment

Subject Categories : Aircraft
      Escape, Rescue and Survival

Distribution Statement : APPROVED FOR PUBLIC RELEASE