Technology for restoration and repair of aircraft engine parts
Problems of increasing the service life of compressor blades of aircraft gas turbine engines using detonation spraying technology are considered. The simulation of the parameters of the velocity and temperature of the particles of the sprayed material in the barrel of the detonation unit and in the flooded space to the substrate was carried out, followed by the choice of the optimal technological parameters of the spraying process. The control system of the detonation unit has been modernized. An experiment was carried out on the deposition of the Al2O3 coatings on the samples of a substrate made of titanium alloy VT3-1. Based on the results of the experiment, technological recommendations were developed concerning both the parameters of the spraying process and the parameters of the preparation of the substrate surface before spraying. The equipment for brazing the blades of the guide vanes is described and a device for spraying coatings on the end surfaces of the compressor blades is proposed. Thus, a complex technology has been developed for restoring the end surfaces of titanium alloy compressor blades by deposition of Al2O3 coatings.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Anderson, J. D. (2012). Modern compressible flow. Tata McGrawhill India Pvt Ltd.
Boyce, M. P. (2012). Gas turbine engineering handbook (4th ed.). Elsevier Inc.
Ciafone, D. J. (Ed.). (2011). Gas turbines: Technology, efficiency and performance. Nova Science Publishers, Inc.
Davidson, P. (2015). Turbulence: An introduction for scientists and engineers. Oxford University Press. https://doi.org/10.1093/acprof:oso/9780198722588.001.0001
Dolmatov, A. I., & Bilchuk, O. V. (2019). Simulation of process of solid particles sputtering with Dimet Nozzle. Metallofizika i Noveishie Tekhnologii, 41(7), 927–940. https://doi.org/10.15407/mfint.41.07.0927
Dolmatov, A. I., & Bilchuk, O. V. (2018). Modelling of gas flow with solid particles in a Short Nozzle. Metallofizika i Noveishie Tekhnologii, 40(9), 1257–1271. https://doi.org/10.15407/mfint.40.09.1257
Dolmatov, A. I., Sergeev, S. V., Kurin, M. O., Voronko, V. V., & Loza, T. V. (2015). Kinematics of a solid particle accelerated by a gas flow in a supersonic nozzle and strain hardening of the treated surface. Metallofizika i Noveishie Tekhnologii, 37(7), 871–885. https://doi.org/10.15407/mfint.37.07.0871
Dolmatov, A. I., Danko, K. A., & Neveshkin, Yu. O. (2014). Modeling the distribution of particles in a two-phase flow of a detonation-plasma unit. Metallofizika i Noveishie Tekhnologii, 11(36), 1533–1545. https://doi.org/10.15407/mfint.36.11.1533
Dolmatov, A. I., Kabatov, A. A., & Kurin, M. A. (2013). Investigation and optimization of diamond smoothing technology as applied to stainless steel details for aircraft engines and aggregates. Metallofizika i Noveishie Tekhnologii, 10(35), 1407–1423.
Farokhi, S. (2014). Aircraft propulsion (2nd ed.). Wiley.
Grilli, M., Valerini, D., Slobozeanu, A., Postolnyi, B., Balos, S., Rizzo, A., & Piticescu, R. (2021). Critical raw materials saving by protective coatings under extreme conditions: A review of last trends in alloys and coatings for aerospace engine applications. Materials, 14(7), 1656. https://doi.org/10.3390/ma14071656
IDC Technologies. (2013). Gas turbines: Fundamentals, maintenance, inspection & troubleshooting. IDC Technologies.
Jansohn, P. (Ed.). (2013). Modern gas turbine systems: High efficiency, low emission, fuel flexible power generation. Woodhead Publishing Limited, Alstom Technology Ltd. https://doi.org/10.1533/9780857096067
Karypis, G., & Kumar, V. (1997). METIS – A software package for partitioning unstructured graphs, partitioning meshes, and computing fill-reducing orderings of Sparse Matrices. Version 3.0. Manual. University of Minnesota and Army HPC Research Center.
Kato, D., Pallot, G., Sugihara, A., & Aotsuka, M. (2014). Research and development of a High Performance Axial Compressor. IHI Engineering Review, 47(1), 49–56.
Lomax, H., Pulliam, T. H., & Zingg, D. W. (1999). Fundamentals of computational fluid dynamics. NASA Ames Research Center.
Menter, F. R. (1993, July). Zonal two-equation k-ω turbulence model for aerodynamic flows. In Paper presented at the AIAA 24th Fluid Dynamics Conference, AIAA-93-2906 (pp. 1–21). Orlando, Florida. https://doi.org/10.2514/6.1993-2906
Reitz, G., Dwinger, K., Schlange, S., Friedrichs, J., & Kappei, F. (2016, April). Analysis of jet engine compressor deterioration and capturing correlations between geometric parameters. In 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (pp. 1–8). Honolulu, United States.
Sharma, S., Majila, A. N., Chavan, V. M., Fernando D. C., Patela, R. J., & Babub, S. N. (2017). Effect of compressor blades’ operational damages within an aircraft gas-turbine engine on its performance. Procedia Engineering, 173, 1894–1900. https://doi.org/10.1016/j.proeng.2016.12.247
Versteeg, H., & Malalasekra, W. (2007). An Introduction to computational fluid dynamics: The finite volume method. Harlow Prentice Hall.
Volkov, K. (Ed.). (2012). Efficiency, performance and robustness of gas turbines. InTech.
White, F. M. (2011). Fluid mechanics. McGraw-Hill.
Wilcox, D. C. (2006). Turbulence modelling for CFD. DCW Industries.
Zorik, I. (2020). Numerical simulation of the outflow of two phase flow from detonation unit barrel. Technology Audit and Production Reserves, 2(1), 32–37. https://doi.org/10.15587/2706-5448.2020.201928