Investigation of failed oxygen charging valve of an aircraft

Madan, M and Venkataswamy, MA and Sujata, M and Suresh Kumar, M and Bhaumik, SK (2006) Investigation of failed oxygen charging valve of an aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A failed oxygen-charging valve of an aircraft was analyzed. Evidences suggest that fire was caused due to leakage in the valve. Analysis shows that the leakage was due to failure of the sealing in the valve. This had resulted in sudden movement of the spindle in the axial direction. The movement appears to have caused frictional heating at the threaded region of the spindle. The heat thus generated resulted in ignition of aluminium in the presence of high-pressure oxygen. Following this, the hand-wheel along with the spindle had popped out of the valve by fracturing the clamping nut.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;oxygen charging valve;seal failure
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 09 Aug 2011 16:04
Last Modified: 09 Aug 2011 16:04
URI: http://nal-ir.nal.res.in/id/eprint/9822

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