scholarly journals Post-Combustion Emissions Control in Aero-Gas Turbine Engines

2020 ◽  
Author(s):  
Prakash Prashanth ◽  
Raymond L Speth ◽  
Sebastian D Eastham ◽  
Jayant S Sabnis ◽  
Steven Barrett
Keyword(s):  
Climate Change ◽  
Air Quality ◽  
Nitrogen Oxides ◽  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Propulsion Systems ◽  
Small Power ◽  
Quality Degradation ◽  
Combustion Emissions

Emissions of nitrogen oxides (NOx) from aircraft cause air quality degradation and climate change. Efforts to improve the efficiency of aircraft propulsion systems are leading to small, power-dense engine cores...

scholarly journals TO DETERMINATION OF THE QUANTITY OF DANGEROUS GASES IN A GAS TURBINE HEAT-VENTILATION TUNNEL INSTALLATION

2019 ◽  
Vol 2 (4) ◽  
pp. 45-52
Author(s):  
Lavrenty Kiyanitsa ◽  
Olga Kulikova
Keyword(s):  
Nitrogen Oxides ◽  
Gas Turbine ◽  
Far East ◽  
Carbon Oxide ◽  
Hazardous Substances ◽  
Turbine Engines ◽  
Hazardous Substance ◽  
Gas Turbine Engines ◽  
Working Parameters

There is the emission problem of hazardous substances such as nitrogen oxides, carbon oxide and soot into inner space of tunnel with heated air while using of gas-turbine engines as heat ventilating equipment for long railway tunnels in conditions of harsh continental climate of Siberian and Far East. In the investigation working parameters of gas-turbine equipment based on jet engine D-36 is determined. The analysis of hazardous substance emissions for two specific working modes is carried out. It is educed that the concentration of nitrogen oxides located at ventilating flow from the equipment, working at nominal mode, do not exceed standards of maximal permissible concentrations for railway tunnels. Parameters of the surrounding air, discharged into the tunnel, for dilution of ventilating flow with high content of nitrogen oxides to standard of MPC is determined.

scholarly journals A Correlation of Nitrogen Oxides Emissions With Gas Turbine Operating Parameters

1976 ◽  
Author(s):  
G. L. Touchton ◽  
N. R. Dibelius
Keyword(s):  
Nitrogen Oxides ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Functional Form ◽  
Turbine Engines ◽  
Operating Parameters ◽  
Gas Turbine Engines ◽  
Reactor Model ◽  
Semi Empirical ◽  
Humidity Dependence

A semi-empirical correlation between nitrogen oxides emissions and combustor humidity, fuel to air ratio, pressure, and temperature is presented. The functional form of the pressure and humidity dependence is taken from the literature. The functional form of the fuel to air ratio and temperature dependence is deduced from consideration of a well-stirred constant residence time reactor model. The correlation is verified for tests of regenerative and simple-cycle constant speed gas turbines and for sea level tests of three different aircraft gas turbine engines. The residual error is approximately ± 10 percent of the measured emission values over the respective operating ranges. The correlation may be used to correct measured NOx emission levels to standard conditions and to predict emission levels from future designs.

Gas Screen in Components of Gas Turbine Engines

1997 ◽  
Vol 28 (7-8) ◽  
pp. 536-542
Author(s):  
A. A. Khalatov ◽  
I. S. Varganov
Keyword(s):  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Gas Screen

Potential Application of Composite Materials to Future Gas Turbine Engines

1988 ◽  
Author(s):  
James C. Birdsall ◽  
William J. Davies ◽  
Richard Dixon ◽  
Matthew J. Ivary ◽  
Gary A. Wigell
Keyword(s):  
Composite Materials ◽  
Gas Turbine ◽  
Potential Application ◽  
Turbine Engines ◽  
Gas Turbine Engines

Method of tribodiagnostics of d-30KU engines/KP with the use of a microwave plasma complex: results of metrological examination and analysis of the accuracy

2020 ◽  
pp. 22-29
Author(s):  
A. Bogoyavlenskiy ◽  
A. Bokov
Keyword(s):  
Gas Turbine ◽  
Microwave Plasma ◽  
Technical Condition ◽  
The State ◽  
Turbine Engines ◽  
Metrological Examination ◽  
Gas Turbine Engines ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Primary Standards

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.

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

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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