Failure analysis of re-heat fuel control unit parts

Suresh Kumar, M and Venkataswamy, MA and Sujata, M and Parameswara, MA and Madan, M and Bhaumik, SK (2005) Failure analysis of re-heat fuel control unit parts. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The quill bush got separated from the tapped joint of the drive output shaft due to fatigue failure of all the six bolts. The damages seen on the quill bush, drive output shaft and the bearings are secondary in nature and subsequent to the primary fatigue failure of the bolts at the tapped joint. Evidences suggest that the excessive clearance ( 200 m) between the bolts and the bolthole on the quill bush was responsible for the fatigue failure. It is recommended that this clearance be maintained as per the standard machine design practice and the adequacy of the joint strength under full load condition be reviewed.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aeroengine;reheat fuel control unit;quill bush;excessive clearance
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: 19 Jul 2011 10:10
Last Modified: 19 Jul 2011 10:10
URI: http://nal-ir.nal.res.in/id/eprint/9454

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