Rybinsk State Aviation Technical University

Rybinsk, Russia

Rybinsk State Aviation Technical University

Rybinsk, Russia
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Remizov A.E.,Rybinsk State Aviation Technical University | Vyatkov V.V.,Rybinsk State Aviation Technical University | Lebedev V.A.,Rybinsk State Aviation Technical University
Russian Aeronautics | Year: 2016

Methods to control flow have been considered in order to reduce end losses in blade rows of GTE gas turbines by means of measures taken at the design stage. © 2016, Allerton Press, Inc.


Bukatyi A.S.,Samara National Research University | Bukatyi S.A.,Rybinsk State Aviation Technical University | Okrugin A.A.,JSC NPO Saturn
Procedia Engineering | Year: 2017

The analysis of the stress-strain state on the basis of equivalent stress and the theories of durability is used for diagnostics of parts at present moment in the typical strength calculations. However a lot of basic aviation parts work at cyclically repeated loadings and they are exposed to loadings and deformation in the field of low and high cycle fatigue. In this case there is necessity of deformation condition calculations or the stress-strain type which significantly influences on the cyclic durability of the parts. For increasing of reliability and cyclic durability of the parts the research purpose is to develop a way and criteria of the analysis and assessment of the stress-strain state for the identification of the most loaded areas of the parts limiting its fatigue. It is offered to consider the stress-strain type on the basis of coefficient of stiffness KS calculated through the main tensions. In this case it is recommended to determine the most subjected to cracking initiating areas of the parts by the largest size of parameter K = KSKU. The research of the finite element analysis of the stress-strain state for the low pressure turbine shaft and high pressure compressor disks of D-30 series gas turbine engine was made according to this parameter. On the basis of this parameter the finite element analysis of the stress-strain state for the low pressure turbine shaft and high pressure compressor disks of the gas-turbine engine of D-30 series is researched in this work. © 2017 The Authors.


Shubin M.,University of Helsinki | Shubin M.,Finnish National Institute for Health and Welfare | Lebedev A.,Rybinsk State Aviation Technical University | Lyytikainen O.,Finnish National Institute for Health and Welfare | And 2 more authors.
PLoS Computational Biology | Year: 2016

The threat of the new pandemic influenza A(H1N1)pdm09 imposed a heavy burden on the public health system in Finland in 2009-2010. An extensive vaccination campaign was set up in the middle of the first pandemic season. However, the true number of infected individuals remains uncertain as the surveillance missed a large portion of mild infections. We constructed a transmission model to simulate the spread of influenza in the Finnish population. We used the model to analyse the two first years (2009-2011) of A(H1N1)pdm09 in Finland. Using data from the national surveillance of influenza and data on close person-to-person (social) contacts in the population, we estimated that 6% (90% credible interval 5.1 – 6.7%) of the population was infected with A(H1N1)pdm09 in the first pandemic season (2009/2010) and an additional 3% (2.5 – 3.5%) in the second season (2010/2011). Vaccination had a substantial impact in mitigating the second season. The dynamic approach allowed us to discover how the proportion of detected cases changed over the course of the epidemic. The role of time-varying reproduction number, capturing the effects of weather and changes in behaviour, was important in shaping the epidemic. © 2016 Shubin et al.


Kozhina T.D.,Rybinsk State Aviation Technical University | Bezyazychny V.F.,Rybinsk State Aviation Technical University
Journal of Friction and Wear | Year: 2016

A method for determining the wear resistance of parts has been presented based on the systematization of the modular source data bank, the evaluation of the surface layer quality parameters, the cutting accuracy, and the cutting conditions. As a result of the study, the calculated dependences have been obtained in terms of the determination of the optimal part cutting modes in relation to the provision of the target surface wear resistance parameters. © 2016, Allerton Press, Inc.


Gur'yanov A.I.,Rybinsk State Aviation Technical University | Evdokimov O.A.,Rybinsk State Aviation Technical University | Piralishvili S.A.,Rybinsk State Aviation Technical University | Veretennikov S.V.,Rybinsk State Aviation Technical University | And 2 more authors.
Russian Aeronautics | Year: 2015

We performed the computational and analytical estimation of parameters and formulated the recommendations for conversion of the combustion chamber of the E70/8 RD engine combustion chamber to associated petroleum gas and oil. © 2015, Allerton Press, Inc.


Bogomolov E.N.,Rybinsk State Aviation Technical University | Oreshkina M.N.,Rybinsk State Aviation Technical University
Russian Aeronautics | Year: 2012

In this paper, we consider the thermogasodynamic relations describing the working process in the axial-radial gas turbine stage when the working fluid flows inside the rotor blades taking into account the initiation of the Coriolis forces and heating. The expressions for the air turbine efficiency are derived and illustrated by the calculation results. © 2012 Allerton Press, Inc.


Piralishvili Sh.A.,Rybinsk State Aviation Technical University | Ivanov R.I.,Rybinsk State Aviation Technical University
Russian Aeronautics | Year: 2012

The paper presents the investigation results for an ejection device of preliminary preparation of a fuel-air mixture for low emission combustion chambers. The process of mixture formation was simulated numerically. The experimental investigation of oxidant and gaseous fuel mixing was carried out and the characteristic dependences of the mixture concentration distribution in the exit section were obtained. © Allerton Press, Inc., 2012.


Kozhina T.D.,Rybinsk State Aviation Technical University
IOP Conference Series: Materials Science and Engineering | Year: 2016

The paper highlights the results of the research on developing the mechanism to model the technological process for magnetron synthesis of nanocomposite films on cutting tools, which provides their specified physical and mechanical characteristics by controlling pulsed plasma parameters. The paper presents optimal conditions for AlTiN coating deposition on cutting tools according to the ion energy of sputtered atoms in order to provide their specified physical and mechanical characteristics. © Published under licence by IOP Publishing Ltd.

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