Analysis of failed Tail Gear Box housing of a helicopter

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2005) Analysis of failed Tail Gear Box housing of a helicopter. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A failed Tail Gear Box (TGB) housing of a helicopter was analyzed. Analysis showed that the gearbox failed by fatigue. Fatigue cracks initiated at the mounting lugs and propagated by low cycle fatigue. There were no metallurgical and/or mechanical abnormalities associated with fatigue crack initiation. Fatigue appears to be stress related. The possibility of excessive load/vibration on the TGB housings in question may be examined.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Helicopter;TGB housing;fatigue
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, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 14 Nov 2011 10:12
Last Modified: 14 Nov 2011 10:12
URI: http://nal-ir.nal.res.in/id/eprint/9993

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