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Journal of Failure Analysis and Prevention

, Volume 17, Issue 6, pp 1208–1216 | Cite as

Test Bed Calibration by Trend Analysis for Reliability of a Turboshaft Engine Performance

  • Simon K. John
  • R. K. Mishra
  • P. Balachandra Shetty
Technical Article---Peer-Reviewed
  • 107 Downloads

Abstract

Aero-engine test bed is the most vital test bench or test equipment for assessing the performance of any aero-engine after production, repair or overhaul as per the performance specification. Aero-engine test bed thus requires periodic calibration as a part of any quality control checks of engine passing out as per the acceptance test procedure laid down for the engine. Periodic aero-engine test bed calibration includes not only calibrating the various sensors used in the test bed system independently but also subjecting the test bed as a whole for calibration with a master engine. While calibration periodicity of the test bed sensors is generally one year or so, test bed calibration as a whole is carried out once in two years. Calibration of test bed using a master engine is very expensive and sometimes not feasible due to non-availability of such engines belonging to early generation of fighter aircrafts. This paper presents a novel concept for calibrating engine test bed using trend analysis. It is mainly based on the performance data of engine acceptance tests carried out over a considerable period of time. This concept completely avoids requirement of a master engine and thus saves enormous effort in terms of cost and man-hours. The concept evolved has been used for calibrating a typical vintage test bed as the proof for validation and found the results comparable with the present trending pattern followed by other engine houses.

Keywords

Calibration Measurement tolerances Correlation tests Repeatability tests Test bed Turboshaft engine 

References

  1. 1.
    MIL-E-5007 D/E (AS), Military Specification: General Specification for Engines, Aircraft, Turbojet and Turbofan (Department of Defense, USA ,1983)Google Scholar
  2. 2.
    MIL-HDBK-1783B, Engine Structural Integration Program (Department of Defense Handbook, USA, 2002)Google Scholar
  3. 3.
    FAA Advisory Circular AC 33.87-1, Calibration Test, Endurance Test and Teardown Inspection for Turbine Engine Certification (Department of Transportation, USA, 2006)Google Scholar
  4. 4.
    B.J. McDonnell, The application of a design validation system and accelerated mission testing to a gas turbine engine development, SAE Technical Paper, Doc. No. 780991 (1980)Google Scholar
  5. 5.
    M.P. Boyce, Gas Turbine Engineering Handbook (Elsevier, Amsterdam, 2011)Google Scholar
  6. 6.
    P. Walsh, P. Fletcher, Gas Turbine Performance, 2nd edn. (Wiley, Hoboken, 2004), p. 518CrossRefGoogle Scholar
  7. 7.
    ISO 10012:2003, Measurement Management Systems—Requirements for Measurement Processes and Measuring Equipment Google Scholar
  8. 8.
    N.H. Croft, ISO 9001:2015 and Beyond—Preparing for the Next 25 Years of Quality Management Standards. International Organization for Standardization (2012). http://bitly.com/next25years
  9. 9.
    AS9100B, Quality Management Systems—Requirements for Aviation, Space and Defense Organizations (2009)Google Scholar
  10. 10.
    I.Y. Tumer, A. Bajwa, A survey of aircraft engine health monitoring systems, in Proceedings of 35th Joint Propulsion Conference (1999)Google Scholar
  11. 11.
    R.K. Mishra, G. Gouda, B.S. Vedaprakash, Preliminary Flight Rating Test of an Aero Gas Turbine Engine, in 21st National Convention of Aerospace Engineers, IIT Kanpur (2007)Google Scholar
  12. 12.
    S. Sarkar, M. Yasar, S. Gupta, A. Ray, K. Mukherjee, Fault Detection and Isolation in Aircraft Gas Turbine Engines. Part 2: Validation on a Simulation Test Bed, in Proceedings of IMechE Vol. 222 Part G: J. Aerospace Engineering (2008). doi: 10.1243/09544100JAERO312

Copyright information

© ASM International 2017

Authors and Affiliations

  • Simon K. John
    • 1
  • R. K. Mishra
    • 1
  • P. Balachandra Shetty
    • 2
  1. 1.Regional Center for Military Airworthiness (Engines)BangaloreIndia
  2. 2.Department of Mechanical EngineeringNitte Meenakshi Institute of TechnologyBangaloreIndia

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