Impact absorption system, particularly for aircraft seats

Details Impact absorption system, particularly for aircraft seats Impact absorption system, particularly for aircraft seats

1992-04-30

1993-12-28

Huppert, Michael S.

Aeronautics and astronautics

Aircraft structure

Fuselage and body construction

188271, 188280, 188374, 188377, 267 6412, 267205, 29721617, B64D 2504, B60G 1318, B60N 242, F16F 712

Patent

active

052732401

ABSTRACT:
An impact energy absorption system for aircraft seats and the like, comprising seat mounting means, a seat movable between a first unloaded position and a second crash induced position, a deforming die and an additional set of die jaws connected to the seat mounting and defining an aperture of variable size, and a deformable rod having a shoulder connecting the seat to the mounting the rod passing through the deforming die and the variable die jaws. During crash induced movement of the seat between its two positions the rod is pulled through the deforming die and the die jaws to absorb impact energy by deformation of the rod. The aperture defined by the die jaws is variable being adapted to allow for self adjustment of the aperture size and respective impact energy absorbing capacity corespondent to the weight of the seat occupant. Restricting means are provided to prevent variation of the aperture size when the external accelarative forces characteristic of pre crash maneuvering or of crash impact are experienced.

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