Title:
CRASH SAFE SHEET
Document Type and Number:
Japanese Patent JPS5353900
Kind Code:
A
Abstract:
A tri-axis crash survivable seat, utilizing a plurality of energy absorbers, which are swivel mounted to the seat bucket and also to a frame where the frame is securely fastened to the structure of a rotary wing or fixed wing aircraft. The energy absorbers are utilized in upper, intermediate and lower pairs, each having different energy absorbing characteristics, stroking distances, and force-displacement relationships from the other pairs. The energy absorbing devices attach to the bucketseat and supporting frame so as to permit tri-axial energy absorption during impact for various vertical or combined vertical impact angles. Each of the intermediate pair of energy absorbing devices is a two stage device designed to minimize the dynamic overshoot associated with the elasticity of the human body, such that a reduced probability of injury is obtained. Energy is dissipated in a controlled manner through the process of the displacement of the seat relative to the craft under arbitrary crash conditions.
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Inventors:
BAANAADO MAZERUSUKII
Application Number:
JP7318077A
Publication Date:
May 16, 1978
Filing Date:
June 20, 1977
Export Citation:
Assignee:
ARA INC
International Classes:
B64D25/04; (IPC1-7): B64D25/04
Domestic Patent References:
| JPS504799A | 1975-01-18 |