Skip to main content
SpringerLink
Log in

Qualification Approach for High-Pressure Spool Shaft of a Low-Bypass Turbofan Engine for Structural Integrity and Life

  • Technical Article---peer-reviewed
  • Published:
Journal of Failure Analysis and Prevention Aims and scope Submit manuscript

Abstract

A shaft has been designed for the high-pressure rotor of a low-bypass military turbofan engine. The complex mission profile of the engine with high throttle excursion demands reliable operation of the shaft throughout the flight envelope maintaining structural integrity and life. Therefore, qualification of the shaft for a fighter class engine is a challenge from airworthiness point of view. This paper presents the methodology adopted and various stages of qualification and standards followed to demonstrate structural integrity and life of the shaft for fitment in engine and engine on aircraft. The shaft successfully completed the qualification procedure and thus ensured the airworthiness for aero engine fitment.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  1. H. Cohen, H.I.H. Saravanamuttoo, G.F.C. Rogers, P. Straznicky, A.C. Nix, Gas Turbine Theory, 7th edn. (Pearson Education, 2019)

  2. T. Giampaolo, The Gas Turbine Hand book: Principles and Practices, 2nd edn. (Fairmont Press, Inc., 2003)

  3. M.P. Boyce, Gas Turbine Engineering Handbook, 2nd edn. (Gulf Professional Publishing, Boston, USA, 2002)

  4. R.S.J. Corran, S.J. Williams, Lifing methods and safety criteria in aero gas turbine engines. Eng. Fail. Anal. 14, 518–528 (2007)

    Article  Google Scholar 

  5. Qualification of Life Extension Schemes for Engine Components, RTO Meeting Proceedings 17 (NATO, USA, 1999). ISBN 10: 9283710126/ISBN 13: 9789283710127

  6. MIL-E-5007E (AS), Military Specification for Engines, Aircrafts, Turbojet and Turbofan (Department of Defense, USA, 1983)

  7. Defence Standard 00-970, Design and Airworthiness Requirements for Service Aircraft, Part 11: Engines (Ministry of Defence, Government of UK, 2018)

  8. M. Klingsporn, Advanced transmission and Oil System Concepts for Modern Aero-Engines. In Turbo Expo: Power for Land, Sea, and Air. 41693, 391–398 (2004)

    Google Scholar 

  9. V. Kumar, R.K. Mishra, Finite Element Analysis of Quill Shaft of an Aero Engine Fuel Pump for Structural Integrity. J. Fail. Anal. Prevent. 20(1), 348–352 (2020). https://doi.org/10.1007/s11668-020-00838-5

    Article  Google Scholar 

  10. S. Kumar, R. Rashmi, B.A. Rajeevalochanam, Current practices in structural analysis and testing of aero-engine main shafts. Procedia Eng. 55, 499–509 (2013)

    Article  Google Scholar 

  11. FAA Advisory Circular, “33.87-1.” Calibration Test, Endurance Test, and Teardown Inspection for Turbine Engine Certification (Department of Transportation, USA, 2006)

  12. S.K. John, R.K. Mishra, K. Hari, H.P. Ramesha, K.K. Ram, Analysis and Prevention of Snags in Turboshaft Engines During Calibration Test. J. Fail. Anal Prevent. 20(1), 15–22 (2020). https://doi.org/10.1007/s11668-020-00800-5

    Article  Google Scholar 

  13. B.J. McDonnell, The Application of a Design Validation System and Accelerated Mission Testing to a Gas Turbine Engine Development, Society of Automotive Engineers, Paper No. SAE 780991 (1978). ISSN: 0148-7191. http://worldcat.org/issn/01487191

  14. R. Ebbs, Is the Traditional 150-hour Endurance Test Outdated (Rolls-Royce Limited, 1985)

Download references

Author information

Authors and Affiliations

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

    R. K. Mishra

  2. National Institute for Smart Government, Hyderabad, 500032, India

    M. Selva Subramanian

Authors
  1. R. K. Mishra
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Selva Subramanian
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to R. K. Mishra.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mishra, R.K., Subramanian, M.S. Qualification Approach for High-Pressure Spool Shaft of a Low-Bypass Turbofan Engine for Structural Integrity and Life. J Fail. Anal. and Preven. 23, 135–140 (2023). https://doi.org/10.1007/s11668-022-01565-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11668-022-01565-9

Keywords

Search

Navigation