Skip to main content
SpringerLink
Log in

Failure Analysis of a Cam Gear in the Torquemeter Assembly of a Turboprop Engine

  • Case History---Peer-Reviewed
  • Published:
Journal of Failure Analysis and Prevention Aims and scope Submit manuscript

Abstract

Failure analysis of a cam gear in the torquemeter assembly of a turboprop engine has been carried out to determine the root cause of the failure so that remedial measures can be adopted to prevent such failures in flight. During flight, one of the engine torques and turbine temperatures started fluctuating leading to the shutting off of the engine. Detailed defect investigation reveals that improper assembly and mounting of the gear have led to the shearing off gear teeth causing torque fluctuation.

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
Fig. 8
Fig. 9
Fig. 10

Similar content being viewed by others

References

  1. J.D. Mattingly, W.H. Heiser, D.T. Pratt, Aircraft Engine Design (American Institute of Aeronautics and Astronautics, Reston, 2002)

    Book  Google Scholar 

  2. A.F. El-Sayed, Aircraft Propulsion and Gas Turbine Engines (CRC Press, Boca Raton, 2017)

    Google Scholar 

  3. H.I.H. Saravanamuttoo, Modern turboprop engines. Prog. Aerosp. Sci. 24(3), 225–248 (1987)

    Article  Google Scholar 

  4. I. MacFarlane, Z. Szlanta, L. Mitrovic, K. Morgan, Gas turbine engine architecture, U.S. Patent 7,055,303, issued 6 June 2006

  5. A.S. Novikov, A.G. Paikin, V.L. Dorofeyev, V.M. Ananiev, A.L. Kapelevich, Application of gears with asymmetric teeth in turboprop engine gearbox, in ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference 2007 Jan 1 (American Society of Mechanical Engineers, 2007), pp. 327–334

  6. A. Kahraman, Planetary gear train dynamics. J. Mech. Des. 116(3), 713–720 (1994)

    Article  Google Scholar 

  7. G.K. Fischer (ed.), Advanced Power Transmission Technology. NASA CP-2210 (1983)

  8. G.J. Weden, J.J. Coy, Summary of drive-train component technology in helicopters, in Gears and Power Transmission Systems for Helicopters and Turboprops, AGARD CP-369 (AGARD, Paris, 1984), pp. 2-1–2-17

  9. B.N. Acker, US Secretary of Army, Turbine engine differential-pressure torque measurement system. United States patent US 7,051,535, 30 May 2006

  10. T. Tauber, Full-flow debris monitoring in gas turbine engines, ASME Paper (1981), pp. 9–12

  11. Y. Diab, F. Ville, P. Velex, Investigations on power losses in high-speed gears. Proc. Inst. Mech. Eng. Part J: J. Eng. Tribol. 220(3), 191–198 (2006)

    Article  Google Scholar 

  12. A.K. Das, Metallurgy of Failure Analysis (McGraw Hill Professional, New York, 1997)

    Google Scholar 

  13. J.A. Bannantine, J.J. Comer, J.L. Handrock, Fundamental of Metal Fatigue Analysis (McGraw Hill Professional, Upper Saddle River, 1990), pp. 40–87

    Google Scholar 

  14. S. Suresh, Fatigue of Materials, 2nd edn. (Cambridge University Press, Cambridge, 2003), pp. 256–257

    Google Scholar 

  15. K. Gurumoorthy, B.D. Faye, G. Arindam, Handling abuse causes premature bearing failures. J. Case Stud. Eng. Fail. Anal. 1, 235–242 (2013)

    Article  Google Scholar 

  16. M.J. Roemer, G.J. Kacprzynski, Advanced diagnostics and prognostics for gas turbine engine risk assessment, in Aerospace Conference Proceedings, 2000 IEEE, vol. 6, pp. 345–353

  17. N.H. Forster, K. Thompson, A.M. Toms, S. Horning, Assessing the potential of a commercial oil debris sensor as a prognostic device for gas turbine engine bearings, in AFRL Presentation at IHSM Conference, Aug 11 2005

  18. L.C. Jaw, Recent advancements in aircraft engine health management (EHM) technologies and recommendations for the next step, ASME Paper No. GT2005-68625 (2005)

Download references

Acknowledgments

The authors are very grateful to the Chief Executive (Airworthiness), CEMILAC for his kind permission for publishing this paper. They are also very thankful to the engineers of Hindustan Aeronautics Limited and Aeronautical Quality Assurance for their support during the present work.

Author information

Authors and Affiliations

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

    R. K. Mishra, D. Arul Kumaresan, C. Jagadish Babu & Vinay Kumar

Authors
  1. R. K. Mishra
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. Arul Kumaresan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. C. Jagadish Babu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Vinay Kumar
    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

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Mishra, R.K., Kumaresan, D.A., Babu, C.J. et al. Failure Analysis of a Cam Gear in the Torquemeter Assembly of a Turboprop Engine. J Fail. Anal. and Preven. 19, 308–313 (2019). https://doi.org/10.1007/s11668-019-00627-9

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11668-019-00627-9

Keywords

Search

Navigation