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Life Assessment of a Sea-Recoverable Small Turbojet Engine Designated for UAV Application

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Abstract

A small turbojet engine is subjected to sea recovery trials for assessment of its life. The engine operates at very high rotor speeds and its integrity needs to be maintained while delivering the required performance for different flight missions. The UAV is launched from ground stations or from ship decks with the help of booster rockets and is recovered over sea. The engine should be capable of reuse after injection of saline water and sand from the sea. Therefore, life assessment of the engine and its components plays an important role while qualifying the engine for the UAV application. Simulated sea dunking tests of the full-scale engine was carried out followed by tear-down examination to assess the extent of corrosion and damage in its components and deterioration in engine performance if any. These tests were found very useful in setting the life from safety and reliable point of view. The engine is cleared for field trials where they would experience real operating conditions and service environment. This paper highlights the sea recovery tests of the engine and the basis on which the life is assessed. Also the paper covers the engine refurbishment procedure which is a practice to refit the engine after every sea recovery.

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References

  1. P. Fahlstrom, T. Gleason, Introduction to UAV Systems (Wiley, Hoboken, 2012)

    Book  Google Scholar 

  2. R. Austin, Unmanned Aircraft Systems: UAVS Design, Development and Deployment, vol. 54 (Wiley, Hoboken, 2011)

    Google Scholar 

  3. P. van Blyenburgh, Uavs-Current Situation and Considerations for the Way Forward (European Unmanned Vehicle Association Paris (France), Paris, 2000)

    Google Scholar 

  4. H. Saravanamuttoo, I. Howard, G. Frederick, C. Rogers, H. Cohen, Gas Turbine Theory (Pearson Education, Upper saddle River, 2001)

    Google Scholar 

  5. J.D. Mattingly, H. Von Ohain, Elements of Propulsion: Gas Turbines and Rockets (American Institute of Aeronautics and Astronautics, Reston, 2006)

    Book  Google Scholar 

  6. MIL-E-005007E(AS), Military Specification: General Specification for Engines, Aircrafts, Turbojet and Turbofan (1983)

  7. R.K. Mishra, G. Gouda, B.S. Vedaprakash, Preliminary Flight Rating Test of an Aero Gas Turbine Engine, 21st National Convention of Aerospace Engineers (IIT Kanpur, India, 2007)

    Google Scholar 

  8. R.K. Mishra, A.K. Mishra, G. Gouda, P.R. Nagasubramanyam, G. Harikrishnan, Qualification of a small turbojet engine for UAV—a challenge. J Aerosp Eng Div IE (India) (2009)

  9. B.H. Farrell, et al., Gas turbine component refurbishment apparatus and repair method. U.S. Patent No. 6,376,801 (2002)

  10. D.R. Kester et al., Preparation of artificial seawater. Limnol. Oceanogr. 12(1), 176–179 (1967)

    Article  Google Scholar 

  11. M.H. Sharqawy, J.H. Lienhard, S.M. Zubair, Thermophysical properties of seawater: a review of existing correlations and data. Desalinat Water Treat 16(1-3), 354–380 (2010)

    Article  Google Scholar 

  12. R.A. Rapp, Y.S. Zhang, Hot corrosion of materials: fundamental studies, JOM 46, 47–55 (1994)

  13. M.J. Pomeroy, Coatings for gas turbine materials and long term stability issues. Mater. Des. 26(3), 223–231 (2005, Special Issue: Tribology)

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Authors and Affiliations

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

    R. K. Mishra

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  1. R. K. Mishra
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Correspondence to R. K. Mishra.

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Mishra, R.K. Life Assessment of a Sea-Recoverable Small Turbojet Engine Designated for UAV Application. J Fail. Anal. and Preven. 17, 539–544 (2017). https://doi.org/10.1007/s11668-017-0284-5

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  • DOI: https://doi.org/10.1007/s11668-017-0284-5

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