Application of progress variable based tabulated chemistry approach to investigate spray combustion in gas turbine engines

The article contains the results of the metrological examination and research of the accuracy indicators of a method for diagnosing aircraft gas turbine engines of the D30KU/KP family using an ultra-high-frequency plasma complex. The results of metrological examination of a complete set of regulatory documents related to the diagnostic methodology, and an analysis of the state of metrological support are provided as well. During the metrological examination, the traceability of a measuring instrument (diagnostics) – an ultrahigh-frequency plasma complex – is evaluated based on the scintillation analyzer SAM-DT-01–2. To achieve that, local verification schemes from the state primary standards of the corresponding types of measurements were built. The implementation of measures to eliminate inconsistencies identified during metrological examination allows to reduce to an acceptable level the metrological risks of adverse situations when carrying out aviation activities in industry and air transportation. In addition, the probability of occurrence of errors of the first and second kind in the technological processes of tribodiagnostics of aviation gas turbine engines is reduced when implementing a method that has passed metrological examination in real practice. At the same time, the error in determining ratings and wear indicators provides acceptable accuracy indicators and sufficient reliability in assessing the technical condition of friction units of the D-30KP/KP2/KU/KU-154 aircraft engines.

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On the prospects of application of nanostructured heterophase polyfunctional composite materials inengine building industry

Voprosy Materialovedeniya ◽

10.22349/1994-6716-2018-93-1-50-57 ◽

2019 ◽

pp. 50-57

Author(s):

O. B. Silchenko ◽

M. V. Siluyanova ◽

V. Е. Nizovtsev ◽

D. A. Klimov ◽

A. A. Kornilov

Keyword(s):

Composite Materials ◽

Gas Turbine ◽

Developed Countries ◽

The United States ◽

Turbine Engines ◽

Gas Turbine Engines ◽

Nanostructured Composite ◽

Polymer Metal ◽

Long Operation ◽

Prospects Of Application

The paper gives a brief review of properties and applications of developed extra-hard nanostructured composite materials and coatings based on them. The presentresearch suggestsaerospace applications of nanostructured composite materials based on carbides, carbonitrides and diboridesof transition and refractory metals. To improve the technical and economic performance of gas turbine engines, it is advisable to use new composite structural materials whose basic physicomechanical properties are several times superior to traditional ones. The greatest progress in developing new composites should be expected in the area of materials created on the basis of polymer, metal, intermetallic and ceramic matrices. Currently components and assemblies of gas turbine engines and multiple lighting power units with long operation life and durability will vigorously develop. Next-generation composites are studied in all developed countries, primarily in the United States and Japan.

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Progress in Novel Electrodeposited Bond Coats for Thermal Barrier Coating Systems

Materials ◽

10.3390/ma14154214 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4214

Author(s):

Kranthi Kumar Maniam ◽

Shiladitya Paul

Keyword(s):

Gas Turbine ◽

Thermal Barrier Coating ◽

Gas Turbines ◽

High Performance ◽

Turbine Engines ◽

Thermal Barrier ◽

Gas Turbine Engines ◽

Potential Cost ◽

Bond Coats ◽

Barrier Coating

The increased demand for high performance gas turbine engines has resulted in a continuous search for new base materials and coatings. With the significant developments in nickel-based superalloys, the quest for developments related to thermal barrier coating (TBC) systems is increasing rapidly and is considered a key area of research. Of key importance are the processing routes that can provide the required coating properties when applied on engine components with complex shapes, such as turbine vanes, blades, etc. Despite significant research and development in the coating systems, the scope of electrodeposition as a potential alternative to the conventional methods of producing bond coats has only been realised to a limited extent. Additionally, their effectiveness in prolonging the alloys’ lifetime is not well understood. This review summarises the work on electrodeposition as a coating development method for application in high temperature alloys for gas turbine engines and discusses the progress in the coatings that combine electrodeposition and other processes to achieve desired bond coats. The overall aim of this review is to emphasise the role of electrodeposition as a potential cost-effective alternative to produce bond coats. Besides, the developments in the electrodeposition of aluminium from ionic liquids for potential applications in gas turbines and the nuclear sector, as well as cost considerations and future challenges, are reviewed with the crucial raw materials’ current and future savings scenarios in mind.

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