Analysis of failed left wheel hub assembly of a microlight aircraft

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Bhaumik, SK (2006) Analysis of failed left wheel hub assembly of a microlight aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The failure of the left wheel hub assembly was due to fatigue cracking of the rear half hub. The sharp edges resulting from the fracture were responsible for the deflation of the tyre. Evidences suggest that abnormal forces acted on the outboard surface of the wheel hub resulting in pulling apart of the two hubs. The most probable reason for the generation of such forces appears to be either due to heavy landing or inadequate tyre pressure. This had resulted in digging of the axle flange into the wheel hub with subsequent fatigue crack initiation at these locations. No abnormalities such as over-tightening of the bolts, material defects etc were responsible for the failure.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;microlight;wheel hub;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
Depositing User: Mrs Manoranjitha M D
Date Deposited: 11 Aug 2011 15:57
Last Modified: 11 Aug 2011 15:57
URI: http://nal-ir.nal.res.in/id/eprint/9868

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