Russian Aeronautics

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Calculation of High-Speed Flow past a Thin Plate Edge Using the Navier–Stokes–Fourier Model and Model Kinetic Equation
Russian Aeronautics - - 2024
Yu. A. Nikitchenko, E. E. Krasavin
The paper considers the problem of high-velocity flow past a perfectly sharp edge. The solution was carried out using the model kinetic equation for polyatomic gases and the Navier–Stokes–Fourier model. The method of solving the problem is described. The distribution of gas parameters is calculated on the plate surface and above it. Gas parameters are analyzed near the sharp edge. The Navier–Stoke... hiện toàn bộ
On influence of energy-producing additives upon the service characteristics of aviation fuels
Russian Aeronautics - Tập 56 - Trang 314-318 - 2013
L. S. Yanovskii, N. I. Varlamova, P. V. Borodako, I. M. Popov
In this paper, some results of studying the service characteristics of mass-produced rocket fuels with additives of aluminum boride nanopowders are presented. As it was established, introduction of these nanopowders with particles of 20 μm in size leads to a significant change of fuel service characteristics. It is shown that as a fuel additive, it is advisable to use the nanopowders with particle... hiện toàn bộ
Calculation of Reliability Parameters of Onboard Harness with Aluminum Wires
Russian Aeronautics - Tập 66 - Trang 396-403 - 2023
I. S. Vasil’ev, S. V. Efremov, A. P. Leonov, S. B. Suntsov
The paper presents the results of calculating the reliability of the cables of the spacecraft onboard harness made of aluminum wires for space application. The calculation was based on the results of qualification tests of type representatives of cables with soldered and crimped connections of aluminum wires. Similar copper wire connections were also tested to compare results. The results of the p... hiện toàn bộ
Calculations of shock wave energy parameters in the presence of high-voltage electrical discharge in water for the transition region
Russian Aeronautics - Tập 54 - Trang 108-113 - 2011
N. D. Akhmetov, M. M. Gimadeev, V. N. Drulis, V. A. Krivosheev, T. V. Rzaeva
A technique for calculating the energy parameters of shock waves at electrical discharge in water is presented for the transition region of discharge channel expansion using as the base the predetermined characteristics of discharge circuit. The technique is based on the solution of energy transport equation that is similar in form to that of radiative transfer. The validity of the presented appro... hiện toàn bộ
Modeling of Hybrid Shell Shaping Process in Carbon Fiber Tooling
Russian Aeronautics - Tập 60 - Trang 640-646 - 2018
L. P. Shabalin, I. N. Sidorov, R. N. Sungatullin
This paper covers an advanced technique of finite element analysis of co-curing shaping process at high temperature of hybrid metal-composite structures. The technique allows us to model a technological production process and to evaluate the influence of design parameters of tooling on the deflected mode and strength of elements taking into account the contact interaction.
A combined approach to scheduling aperiodic problems in real-time systems
Russian Aeronautics - - 2007
С. А. Данилова
On choice of the blade back profile curvature in transonic turbine cascades
Russian Aeronautics - Tập 54 - Trang 159-164 - 2011
B. I. Mamaev
Some design and experimental data on three cascades with the same 12° bending angle for the primary nozzle block of a gas turbine are presented. As is seen from the investigation the most efficient at the transonic velocities of the outward flow are the blades, the back curvature of which in the bevel cut zone decreases to the trailing edge. Also presented is the fact that the blade with the incre... hiện toàn bộ
Nonlinear deforming of laminated composite shells of revolution under finite deflections and normal’s rotation angles
Russian Aeronautics - Tập 60 - Trang 169-176 - 2017
L. N. Rabinskii, V. G. Dmitriev, S. I. Zhavoronok, O. V. Egorova, V. I. Biryukov
The discretization of the boundary value problem for laminated composite shells is based on the finite difference approach using the regular mesh with the constant grid step and the difference operators of the second order of accuracy. The dynamic relaxation method is proposed for the solution of the nonlinear problem. The evolutionary equations of the dynamic relaxation are constructed, and the o... hiện toàn bộ
#Automotive Engineering
To selection of the model fluid for hydrogen simulation in testing of seals
Russian Aeronautics - Tập 60 - Trang 223-228 - 2017
A. V. Moskvichev, A. V. Ivanov
The paper discusses the applicability of cold gaseous nitrogen as a model working fluid in testing the hydrogen pump seals for power plants by three-dimensional modeling.
Calculation of Parameters for Manufacturing the Bearing Surfaces by Pressurization
Russian Aeronautics - Tập 63 - Trang 177-186 - 2020
R. Sh. Gimadiev, V. I. Khaliulin, N. V. Levshonkov
The statement and the technique of solving a new class of problems for calculating the process parameters of the manufacture of inflatable bearing surfaces of aircraft are proposed. The technique development is based on dependencies of interaction dynamics of the stretchable fabric with internal pressure in the wing cavity. The model takes into account the imbalance of the pressure and tension for... hiện toàn bộ
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