Failure analysis of tail under carriage strut of a helicopter
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Failure analysis of tail under carriage strut of a helicopter
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| Creator |
Madan, M
Sujata, M Venkataswamy, MA Raghavendra, K Bhaumik, SK |
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| Subject |
Aeronautics (General)
Chemistry and Materials (General) |
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| Description |
Support assembly of a fractured tail under carriage a helicopter was sent to the laboratory for analysis. Fractographic examination revealed that the under carriage strut had failed under impact load, the crack being initiated from a notch in the form of a fatigue crack front. Analysis suggests that the fatigue crack initiation was due to heavy landing over a period of time. Since a notch was already present, the load during the last landing was responsible for the final fracture. Considering the fact that the fatigue crack depth was only about 1.0 mm, it can be stated that the last landing was quite severe. Possibilities of material defects and/or design deficiencies leading to the failure are ruled out.
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| Publisher |
National Aerospace Laboratories
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| Date |
2011
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| Type |
Proj.Doc/Technical Report
NonPeerReviewed |
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| Identifier |
Madan, M and Sujata, M and Venkataswamy, MA and Raghavendra, K and Bhaumik, SK (2011) Failure analysis of tail under carriage strut of a helicopter. Project Report. National Aerospace Laboratories, Bangalore, India.
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| Relation |
http://nal-ir.nal.res.in/9351/
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