Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-26T22:20:20.614Z Has data issue: false hasContentIssue false
  • English
  • Français

Dimensional analysis of an integrated pump and de-aerator solution in more electric aero engine oil systems

Published online by Cambridge University Press:  11 May 2017

J. Steimes  and
P. Hendrick
J. Steimes*
Affiliation:
Université Libre de Bruxelles, Aero-Thermo-Mechanics Department, Brussels, Belgium
P. Hendrick
Affiliation:
Université Libre de Bruxelles, Aero-Thermo-Mechanics Department, Brussels, Belgium
*
J.S.Steimes@tudelft.nl
Get access Rights & Permissions [Opens in a new window]

Abstract

Aero-engine oil systems need to pump and de-aerate air-oil flows. Engine sub-components performing these tasks are undergoing important changes due to the development of more-electric engines. A new integrated pump and separation system that can be electrically entrained was developed and characterised experimentally to reduce footprint on the engine and increase reliability and performance. This prototype combines the pumping, de-aeration and de-oiling function of the scavenge part of oil systems. Previous works have failed to address in-flight performance of the prototype. To address this need, a dimensional analysis of the Pump and Separation System that allows in-flight performance prediction is proposed in this paper. This model is used to assess different prototype sizes and the influence of a more-electric engine. This analysis illustrates that by switching to an electric entrainment, the footprint of the Pump and Separation system on the engine is reduced by 34%, and de-aeration performances are improved by 55% at maximum take-off and 17% in cruise phase. This study opens the way for a more accurate design of the prototypes based on engine requirements.

Type
Research Article
Information
The Aeronautical Journal , Volume 121 , Issue 1240 , June 2017 , pp. 803 - 820
Copyright
Copyright © Royal Aeronautical Society 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Linke-Diesinger, A. Systems of Commercial Turbofan Engines: An Introduction to Systems Functions, 2008, Springer, Berlin, Germany.Google Scholar
2. Kurz, W., Dullenkopf, K. and Bauer, H.-J. Influences on the oil split between the offtakes of an aero-engine bearing chamber, Proceedings of ASME Turbo Expo 2012 Power for Land, Sea, and Air, 2012, Copenhagen, Denmark.CrossRefGoogle Scholar
3. Eastwick, C.N., Simmons, K., Wang, Y. and Hibberd, D. Study of aero-engine oil - air separators, Proceedings of IMechE Part A: J Power and Energy, 2006, 220, pp 707-717.Google Scholar
4. Gorse, P., Dullenkopf, K., Bauer, H.-J. and Wittig, S. An experimental study on droplet generation in bearing chambers caused by roller bearings, Proceedings of ASME Turbo Expo 2008 Power for Land, Sea, and Air, 2008, Berlin, Germany.Google Scholar
5. Willenborg, K., Klingsporn, M., Tebby, S., Ratcliffe, T., Gorse, P., Dullenkopf, K. and Wittig, S. Experimental analysis of air/oil separator performance, J Engineering Gas Turbines Power, 2008, 130, (6), 062503. doi:10.1115/1.2795785.Google Scholar
6. Winder, C. and Balouet, J.-C. Aerotoxy syndrome: Adverse health effects following exposure to jet oil mist during commercial flights, Towards a safe and Civil Society. Proceedings of the International Congress on Occupational Health Conference, 2000, Brisbane, Australia.Google Scholar
7. Ippoliti, L., Steimes, J. and Hendrick, P. Investigation on an oil aeration measurement technique for the study of pump performance in an aircraft engine lubrication system, Proceedings of ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, 2015.Google Scholar
8. Aslin, D. Monitoring bearing and gear failures in aircraft gas turbine engines, Sensors Mag, 2001. Available at: http://archives.sensorsmag.com/articles/1001/30/main.shtml Google Scholar
9. Flouros, M. and Streifinger, H. Lubrication systems for aircraft gas turbine engines, new component developments for future applications, Specialists Meeting on “Advanced Lubrication Systems for Gas Turbine Engines” (AVT-188), 2012, Biarritz, France.Google Scholar
10. Kanarchos, S. and Flouros, M. The impact of flow inlet conditions on the two-phase flow pattern and the heat transfer in a scavenge pipe of an aero engine bearing chamber sealed with brush seals, Proceedings of the International Gas Turbine Conference, 2010.Google Scholar
11. Flouros, M., Hendrick, P., Outirba, B., Cottier, F. and Proestler. Thermal and flow phenomena associated with the behavior of brush seals in aero engine bearing chambers, J Engineering Gas Turbines Power, 2015, 137, (9) 092503. doi: 10.1115/1.4029711.CrossRefGoogle Scholar
12. Chandra, B., Simmons, K., Pickering, S. and Tittel, M. Factors affecting oil removal from an aeroengine bearing chamber. In Proceedings of ASME Turbo Expo 2010 Power for Land, Sea, and Air, 2010, Glasgow, UK, 2010.Google Scholar
13. Streifinger, H. Fuel/oil system thermal management in aircraft turbine engines, RTO AVT Symposium on Design Principles and Methods for Aircraft Gas Turbine Engines RTO MP-8, 1998.Google Scholar
14. Farrall, M., Hibberd, S., Simmons, K. and Giddings, D. Prediction of air/oil exit flows in a commercial aero-engine bearing chamber, Proceedings of the Institution of Mech Engineers, Part G: J Aerospace Engineering, 2006, 220, (3), pp 197-202.Google Scholar
15. Raimarckers, N. Oil systems for next generation engines - ELUBSYS project mid term achievements, Aerodays Conference, 2011.Google Scholar
16. Faleiro, L., Herzo, J., Schievelbusch, B. and Seung, T. Integrated equipment systems for a more electric aircraft - hydraulics and pneumatics, Proceedings of the 24th International Congress of the Aeronautical Sciences (ICAS), 2004, Yokohama, Japan.Google Scholar
17. Soares, C. Gas Turbines - A Handbook of Air, Land and Sea Applications, 2008, Butterworth-Heinemann, Burlington, Massachuesetts, US.Google Scholar
18. Blanding, D. Subsystem design and integration for the more electric aircraft, Proceedings of the 25th International Congress of the Aeronautical Sciences (ICAS), 2006, Hamburg, Germany.Google Scholar
19. Gohardani, A.S., Doulgeris, G. and Singh, R. Challenges of future aircraft propulsion: A review of distributed propulsion technology and its potential application for the all electric commercial aircraft. Progress in Aerospace Sciences, 2011, 47, (5), pp 369-391.CrossRefGoogle Scholar
20. Zähringer, C., Stastny, L. and Ardey, S. Towards the powerhouse for more electric aircraft - dedicated engine concepts, Proceedings of the 19th International Symposium on Air Breathing Engines, 2009, Montréal, Canada.Google Scholar
21. Klingsporn, M. Advanced transmission and oil system concepts for modern aero-engines, Proceedings of ASME Turbo Expo 2004 Power for Land, Sea, and Air, 2004, Vienna, Austria.Google Scholar
22. Amara, Y., Hoang, E., Gabsi, M., Lecrivain, M. and Allano, S. Design and comparison of different flux-switch synchronous machines for an aicraft oil breather application, European Transactions on Electrical Power, 2005, 15, pp 497-511.Google Scholar
23. Gruselle, F., Steimes, J. and Hendrick, P. Study of a two-phase flow pump and separator system, J Engineering Gas Turbines Power, 2011, 133, (6), 062401. doi:10.1115/1.4002470.Google Scholar
24. Steimes, J., Gruselle, F. and Hendrick, P. Study of an air-oil pump and separator solution for aero engine lubrication systems, Proceedings of ASME Turbo Expo 2013 Power for Land, Sea, and Air, 2011, San Antonio, Texas, US.Google Scholar
25. Steimes, J., Gruselle, F. and Hendrick, P. Performance study of an air-oil pump and separator solution, Proceedings of ASME Turbo Expo 2012 Power for Land, Sea, and Air, 2012, Copenhagen, Denmark.Google Scholar
26. Gruselle, F. and Hendrick, P. Two-phase flow pump and separator system: Experimental and numerical study, Proceedings of the 19th Conference of the International Society for Air Breathing Engines (ISABE), 2009, Montréal, Canada.Google Scholar
27. Steimes, J., Diakodimitris, C., Di Matteo, M. and Hendrick, P. A laser diffraction study on droplet diameters in two lubrication systems, Proceedings of 16th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 2012, Lisboa, Portugal.Google Scholar
28. Chan, A.M.C., Kawaji, M., Nakamura, H. and Kukita, Y. Experimental study of two-phase pump performance using a full size nuclear reactor pump, Nuclear Engineering and Design, 1999, 193, pp 159-172.CrossRefGoogle Scholar
29. Gillaranz, J.L., Kidd, H.A., Chochua, G. and Maier, W.C. An approach to compact wet gas compression, Proceedings of ASME Turbo Expo 2010 Power for Lqn, Seq, and Air, 2010, Glasgow, Scotland.CrossRefGoogle Scholar
30. Brouwers, J.H.H. Phase separation in centrifugal fields with emphasis on the rotational particle separator, Experimental Thermal and Fluid Science, 2002, 26, pp 325-334.Google Scholar
31. Willems, G.P., Kroes, J.P., Golombok, M., Van Esch, B.P.M., Van Kemenade, H.P. and Brouwers, J.H.H. Performance of a novel rotating gas-liquid separator, J Fluid Eng, 2010, 132 (3), 031301. doi:10.1115/1.4001008.Google Scholar
32. Brouwers, B. and Van Kemenade, E. Condensed rotational separation for co 2 capture in coal gasification processes, Proceedings of the 8th European Conference on Coal Research and its Applications, 2010, Leeds, UK.Google Scholar
33. Creutz, M. and Mewes, D. A novel centrifugal gas-liquid separator for catching intermittent flows, Int J Multiphase Flow, 1998, 24, pp 1057-1078.Google Scholar
34. Harker, J.H. and Keyes, K. Gas separation pump for liquid circulating systems, United State Patent 3 290 864, 1966.Google Scholar
35. Sugden, K.B. Centrifugal deaerator and pump, United States Patent 4 600 413, 1986.Google Scholar
36. Lorenz, J. and Gattinger, M. Lubrication system for gas turbine engines and pump for such a system, United States Patent 4 714 139, 1987.Google Scholar
37. Gruselle, F. Study of an Integrated Pump and Gas-Liquid Separator System and Application to Aero-Engine Lubrication Systems, PhD Thesis, 2012, Université Libre de Bruxelles.Google Scholar
38. Steimes, J., Ruelle, A., Gruselle, F. and Hendrick, P. Study of air-oil separation and pumping devices for gas turbine engines, Proceedings of the 20th conference of the International Society for Air Breathing Engines (ISABE), Goteborg, 2011, Sweden.Google Scholar
39. Nourbakhsh, S., Jaumotte, A., Hirsch, C. and Parizi, H. Turbopumps and Pumping Systems, 2008, Springer.Google Scholar
40. Gülich, J.F. Centrifugal Pumps, Springer, 2008.Google Scholar
41. Adam, F. and Hendrick, P. 0-d simulation of the lubrication system of a gas turbine engine, AVT-188 Specialists Meeting on “Advanced Lubrication Systems for Gas Turbine Engines”, 2012.Google Scholar