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Qualification Approach of a High-Pressure Compressor Drum of a Military Turbofan Engine for Structural Integrity and Life

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Abstract

A multistage high-pressure compressor drum has been designed for a low bypass military turbofan engine. The complex mission profile of the engine with high throttle excursion demands reliable operation of the compressor throughout the flight envelope maintaining structural integrity. Therefore, qualification of the compressor drum for a fighter class engine is a challenge from the airworthiness point of view. This paper presents the methodology adopted and various stages of qualification, standards followed, and results based on which clearance has been accorded for fitment in engine and engine on aircraft. The compressors thus fitted in engine have exhibited satisfactory performance and are at different stages in service.

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Acknowledgment

The authors are very grateful to the General Manager, Engine Division, Hindustan Aeronautics Limited and the Chief Executive (Airworthiness), CEMILAC for their kind permission for publishing this paper. The authors are also very thankful to the Regional Director, Aeronautical Quality Assurance (Engines) for his help and support during this research.

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Authors and Affiliations

  1. Regional Center for Military Airworthiness (Engines), Bangalore, 560093, Karnataka, India

    R. K. Mishra, L. Prakash & S. N. Mistry

Authors
  1. R. K. Mishra
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  2. L. Prakash
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  3. S. N. Mistry
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Correspondence to R. K. Mishra.

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Mishra, R.K., Prakash, L. & Mistry, S.N. Qualification Approach of a High-Pressure Compressor Drum of a Military Turbofan Engine for Structural Integrity and Life. J Fail. Anal. and Preven. 15, 503–512 (2015). https://doi.org/10.1007/s11668-015-9963-2

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  • DOI: https://doi.org/10.1007/s11668-015-9963-2

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