Optimization of working process parameters of small-scale turbojet for unmanned aircraft

Кузьмичев, Венедикт Степанович; Tkachenko, Andrey; Filinov, Evgeny; Krupenich, Ilia N.; Ostapyuk, Yaroslav A.

doi:10.1109/icmsc.2017.7959456

Cited by 9 publications

(8 citation statements)

References 5 publications

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“…By CAE system of ASTRA [8,9] As can be seen from the presented results, in the case of steam supply to the input of the free turbine and the high-pressure turbine there is a significant shift in Collaboration operation lines, which can lead to a decrease in the gas-dynamical stability of the compressors, and efficiency. To maintain the position of Collaboration operation lines, was applied the correction of the throughput capacity of free turbine nozzle vanes (by 15%).…”

Section: Calculationsmentioning

confidence: 86%

Increase the Efficiency of a Gas Turbine Unit for Gas Turbine Locomotives by Means of Steam Injection into the Flow Section

et al. 2018

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In the modern world of railways, electrification is given great importance. Currently, more than 50% of all freight traffic carried out by electric traction. However, today, about half of the railways are not electrified, so it is necessary to use thermal engines to drive the locomotive. One of the possible variant is use gas turbine unit. The power of the gas turbine unit is given to the electric generator, and the electric motors drive the locomotive. In the present paper, as a power plant of a gas turbine locomotive, considered gas turbine unit with a twin -shaft gas generator of two schemes: 1- with steam supply to the inlet of the high-pressure turbine (into the combustion chamber) and 2- with steam supply to inlet of the free turbine. By CAE system of ASTRA, Collaboration operation lines calculated for different variants of steam injection. When the steam injected into the inlet of a free turbine and a high-pressure turbine. in the case of steam supply to the input of the free turbine and the high-pressure turbine there is a significant shift in Collaboration operation lines, which can lead to a decrease in the gas-dynamical stability of the compressors, and efficiency. To maintain the position of Collaboration operation lines, was applied the correction of the throughput capacity of free turbine nozzle vanes (by 15%). In the case of steam supply to the inlet of a free turbine, to ensure gas-dynamic stability of the compressors, a change in the throughput capacity of its nozzle vanes is required.

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Section: Calculationsmentioning

confidence: 86%

Increase the Efficiency of a Gas Turbine Unit for Gas Turbine Locomotives by Means of Steam Injection into the Flow Section

et al. 2018

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“…The results of the analysis of the weight models will be valid for most modern small-scale turbofan engines, since their parameters fit into this range. Regularization was carried out using the developed at the Samara National Research University software "ASTRA" [13][14][15] as task of minimization of discrepancies between the published and calculated values (e.g. SFC, thrust, air mass flow rate, etc.…”

Section: Search For Initial Data and Their Preparationmentioning

confidence: 99%

Correlation-regression models for calculating the weight of small-scale aircraft gas turbine engines

et al. 2018

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Several new correlation-regression models of weight calculation for small-scale aircraft gas turbine engines are proposed for their conceptual design stage. A comparison of the obtained weight models with each other and with the Kuz’michev model is carried out. Based on the obtained results, conclusions about the feasibility and scope of their application are drawn. New correlation-regression models differ from each other in the number of input parameters, as well as in the accuracy of forecasting the weight. In the course of the work, a database of main data and thermodynamic parameters of turbofan engines (TFE) is created consisting of 92 small-scale TFEs with thrust less than 50 kN. Based on the collected statistics, formulas were obtained that allow calculating the weight at the initial stage of engine design. The error in calculating the weight by these models is in range from 10% to 30%.

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“…During the past decade, the computer-aided system of thermogasdynamic calculations and analysis was developed at the Department of Aircraft Engine Theory of Samara National Research University [6,7]. This system covers the following tasks of a conceptual design stage of gas turbine engines and power plants:…”

Section: Description Of Existing Virtual Rigmentioning

confidence: 99%

Automated Virtual Testing Rig Incorporating Multi-level Models of Gas Turbine Engines

et al. 2018

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This article describes the multi-level approach to developing the virtual testing rig of gas turbine engines and power plants. The described virtual rig is developed on the basis of computer-aided system of thermogasdynamic calculations and analysis ASTRA, developed at Samara National Research University. Existing testing rig is widely used in educational process to supply the students’ research activities with the information on engine operation in a variety of ambient and flight conditions during transients. An approach to upgrading the virtual testing rig is proposed. The described modifications would provide the capabilities to solve more complex research tasks, including investigation of influence of geometry of engine elements on the engine characteristics, multidisciplinary investigations, identification of engine models using the results of experimental investigations and identification of sources of engine deficiencies during the development phase of engine designing.

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Optimization of working process parameters of small-scale turbojet for unmanned aircraft

Cited by 9 publications

References 5 publications

Increase the Efficiency of a Gas Turbine Unit for Gas Turbine Locomotives by Means of Steam Injection into the Flow Section

Increase the Efficiency of a Gas Turbine Unit for Gas Turbine Locomotives by Means of Steam Injection into the Flow Section

Correlation-regression models for calculating the weight of small-scale aircraft gas turbine engines

Automated Virtual Testing Rig Incorporating Multi-level Models of Gas Turbine Engines

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