Analysis of crash helmet and survival kit items of an aircraft

Sujata, M and Madan, M and Bhaumik, SK (2011) Analysis of crash helmet and survival kit items of an aircraft. Project Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

A pilot crash helmet and survival kit items of an aircraft were forwarded to this laboratory for investigation. Examination revealed that the crash helmet got damaged/ cracked during impact with the ground. The parachute riser straps were found broken under tensile load at the faded/ discoloured region. There were no signatures on the straps to suggest that they had broken due to impact with any solid objects either in air or on the ground. The seat pan was found to have got crashed under impact forces. During the impact, the seat pan, made of composite material, had sunk-in resulting in cracking at various locations. Evidences suggest that the straps had broken in air, and the damages to the helmet and the seat pan had occurred during the impact on to the ground. From the pattern of damages on the helmet and the seat pan, it appears most probable that the pilot had impacted on to the ground in semi-lying position wherein the seat had impacted first on to the ground followed by impact on head/helmet.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;Crash helmet;Survival kit;Impact damages
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Ms. Alphones Mary
Date Deposited: 14 Jul 2011 16:17
Last Modified: 14 Jul 2011 16:17
URI: http://nal-ir.nal.res.in/id/eprint/9382

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