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Kazanskiy N.L.,Samara State Aerospace University
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Problems relating to diffractive computer optics, prospective diffractive-optical-element-based (DOE-based) devices, and relevant information technologies are overviewed. Based on the studies conducted, benefits and disadvantages of the research facilities and associated technological procedures available at the Research & Education Center of Diffractive Computer Optics established jointly by the IPSI RAS and SSAU are analyzed. © 2012 SPIE.


Doroshin A.V.,Samara State Aerospace University
International Journal of Non-Linear Mechanics | Year: 2013

Dynamics of the torque-free angular motion of gyrostat-satellites and dual-spin spacecraft are examined. New analytical solutions for the angular moment components are obtained in terms of Jacobi elliptic functions. Also analytical solutions for Euler's angles are found. These solutions can be used for a dual-spin spacecraft and gyrostat-satellites attitude dynamics analysis and synthesis. © 2012 Elsevier Ltd. All rights reserved.


Kazanskiy N.L.,Samara State Aerospace University | Serafimovich P.G.,Samara State Aerospace University
Optics Express | Year: 2014

In this paper, we propose and numerically investigate an alloptical temporal integrator based on a photonic crystal cavity. We show that an array of photonic crystal cavities enables high-order temporal integration. The effect of the value of the cavity's free spectral range on the accuracy of the integration is considered. The influence of the coupling coefficients in the resonator array on the integration accuracy is demonstrated. A compact integrator based on a photonic crystal nanobeam cavity is designed, which allows high-precision integration of optical pulses of subpicosecond duration. © 2014 Optical Society of America.


Murzin S.P.,Samara State Aerospace University
Optics and Laser Technology | Year: 2013

Exposure to laser radiation for creation of nanoporous structures in the Cu-Zn alloy was investigated. It was established that exposure to laser pulse-periodic radiation with pulse repetition rate up to 5000 Hz makes it possible to form a nanoporous structure in the near-surface layer. The conditions of increase of area depth of such structures formation up to 40-45 μm were ascertained. The temperature and speed conditions which provide predominant channel-type nanopores formation with width of about 100 nm forming a nanoporous net were determined. This patented technology is a perspective for production of catalysts and microfiltration membranes. © 2012 Elsevier Ltd. All rights reserved.


Patent
Samara State Aerospace University | Date: 2014-12-15

The present invention relates to various kinds of finishing and hardening treatment of holes in pieces by methods of plastic surface deformation and can find application in many branches of engineering industry. It is designed to burnish holes on a milling or drilling machine tool. The device for diamond-burnishing of holes enables to enlarge the functional possibilities, to improve the quality of the treated hole surface, the endurance of the burnishing tool, to eliminate a gap of the rod, to provide the opportunity for a precise regulation in order to get the necessary hole caliber, to use the load of all the weights for obtaining the necessary pressing force. The device structure comprises a housing with a tapered stem, central and terminal arms with crossheads and shafts, bars with weights, a foot with a cylindrical bode and an arbor with a diamond-burnishing tool.


A process for the manufacture of thin-walled elasto-porous elements in the form of bushings in metal-rubber material (MR), comprises the steps of: obtaining wire fragments in the form of spirals having a lead equal to the spiral diameter, forming a flat blank from said spiral segments; pressing the blank into a roll; placing the roll into a mold; placing some elastic medium inside said roll; and pressing the roll in several passes by axial compression together with the elastic medium elements transforming the axial compression into radial pressure on the roll to be compressed.


A process for the electromagnetic modification is based on the application of the nuclear magnetic resonance effect when the electromagnetic energy for destroying chemical bonds is lowered, and the frequency selection enables to selectively act on a determined type of molecules. The process uses a two-circuit adjustment of the nuclear magnetic resonance frequency where the first control circuit is used for an accurate adjustment and maintaining of the frequency that breaks the bonds of a specific type of molecules, the second control circuit enabling, with the help of a quality analyzer, to select the type of molecules to be modified.


Method for determining oscillation parameters of turbo-machine blades consists in that when the blade tip travels in front of a sensor, reading values of a single pulsed signal formed by the sensor are obtained in a number that is not lower than that of unknown parameters of a harmonic or polyharmonic oscillation of the blade, the origin of a single pulsed signal readings obtained for each blade being synchronized with the blade tip position relative to the sensor according to a given level of the single pulsed signal; then the values of the harmonic or polyharmonic oscillation parameters of the blade are calculated with the use of the obtained values of the single pulsed signal reading origins and of the value of the turbo-machine shaft revolution period.


The invention relates to methods and devices for controlling the intensity and direction of light emerging from an independent source, inter alia to design-based interactions of optical devices in particular for systems for illuminating coloured liquid crystal displays. The method comprises redirecting radiation from sources with the aid of lenses (reflectors). The radiation is redirected onto a light-diffusing substrate and uniformly illuminated sections are produced which in turn form a uniform illumination of the display. The technical result of the use of the present invention consists in improving the light characteristics of displays such as efficiency, lighting homogeneity, and reducing the cost of the system by virtue of the use of lenses (reflectors) with one working surface and a smaller number of highly effective light sources (light-emitting diodes).


Patent
Samara State Aerospace University | Date: 2015-06-29

An aluminum-base alloy contains components at the following ratio of the same, in mass %: copper 0.5-2.0; manganese 0.3-1.6; zirconium 0.1-0.5; boron 0.02-0.15; silver 0.01-0.5; scandium 0.02-0.15; iron 0.01-0.3; silicon 0.01-0.35; inevitable admixtures 0-0.1 each one of them with 0-0.03, the remnant being aluminum. At the same time, boron, zirconium and scandium are present as nanoparticles AlB_(2), AlB_(12 )borides and Al_(3)(ZrSc) with an average size of no more than 50 nm to provide electric conductivity of at least 55% IACS, the ultimate strength (_()) after exposure to 250 C. for 400 hours being at least 170 MPa. The alloy shows increased thermostability and electric conductivity and is foreseen for items operating under elevated temperatures.

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