Moscow State Technical University
Moscow State Technical University
Gladyshev V.O.,Moscow State Technical University
Journal of Physics: Conference Series | Year: 2016
The purpose of this study was to obtain an equation for the propagation time of electromagnetic and gravitational waves in the expanding Universe. The velocity of electromagnetic waves propagation depends on the velocity of the interstellar medium in the observer's frame of reference. Gravitational radiation interacts weakly with the substance, so electromagnetic and gravitational waves propagate from a remote astrophysical object to the terrestrial observer at different time. Gravitational waves registration enables the inverse problem solution - by the difference in arrival time of electromagnetic and gravitational-wave signal, we can determine the characteristics of the emitting area of the astrophysical object.
Moscow State Technical University and Samsung | Date: 2011-06-09
An optical system including integrated illumination and imaging optical systems, and a 3-dimensional (3D) image acquisition apparatus including the optical system. In the optical system of the 3D image acquisition apparatus, the illumination optical system and the imaging optical system are integrated to have a coaxial optical path. Accordingly, there is no parallax between the illumination optical system and the imaging optical system, so that depth information about an object acquired using illumination light may reflect actual distances between the object and the 3D image acquisition apparatus. Consequently, the depth information about the object may be more precise. The zero parallax between the illumination optical system and the imaging optical system may improve utilization efficiency of the illumination light. As a result, a greater amount of light may be incident on the 3D image acquisition apparatus, which ensures to acquire further precise depth information about the object.
Moscow State Technical University and Samsung | Date: 2011-09-24
An illumination optical system of a 3-dimensional (3D) image acquisition apparatus and a 3D image acquisition apparatus including the illumination optical system. The illumination optical system of a 3D image acquisition apparatus includes a beam shaping element which outputs light having a predetermined cross-sectional shape which is proportional to a field of view of the 3D image acquisition apparatus. The beam shaping element may adjust a shape of illumination light according to its cross-sectional shape. The beam shaping element may uniformly homogenize the illumination light without causing light scattering or absorption.
Agency: European Commission | Branch: FP7 | Program: CP-FP-SICA | Phase: SPA.2010.3.2-04 | Award Amount: 736.01K | Year: 2011
Objects re-entering the atmosphere of the Earth from space require systems to decelerate the object during its descent phase as well as protection against temperatures of several hundreds of degrees of centigrade caused by the atmospheric friction. We propose to study the feasibility of using with the Earth re-entry a system developed for entering the Martian atmosphere. The focus of this work will be in analyzing and measuring the dynamical stability in transonic phase of a brand new re-entry and descent system for low mass payloads. We are to investigate an entry, descent and landing system developed for Mars. This system is based on brand new technology involving inflatable structures saving a considerable amount of mass compared to traditional rigid structures. The project behind is MetNet Precursor, which is a planetary exploration mission to Mars, aimed to deploy on its surface a meteorological station based on a new type of semi-hard landing vehicle called MetNet Lander (MNL). This work will investigate the feasibility to use the MetNet entry and descent system at Earth allowing for scaling modifications for the key systems assuming deorbitation from a LEO orbit. Specifically, this work will analyze by simulations and by wind tunnel testing the stability of the entry and descent system during the supersonic and transonic phases of the descent in the atmosphere of the Earth. This work will foster collaboration between Russian and European organizations, and will provide brand-new knowledge on the re-entry systems. This project will effectively reduce duplication of research efforts and will open new avenues for joint space technology research and development.
Varaksin A.Y.,Moscow State Technical University
High Temperature | Year: 2014
Experimental investigations and theoretical calculations devoted to studying different aspects of the formation of clusters in two-phase flows are reviewed. The physical mechanisms of the formation of the regions of increased concentrations of particles in turbulent flows and under flowing bodies by two-phase streams, as well as in free concentrated vortices, are considered. © 2014, Pleiades Publishing, Ltd.
Morosov A.I.,Moscow State Technical University
Physics of the Solid State | Year: 2014
Possible methods and problems of the development of magnetoresistive memory with electric field assisted writing have been considered. It has been shown that the most promising is the memory based on the compensated cut of multiferroic bismuth ferrite BiFeO3. Small values of the weak ferromagnetic moment and linear magnetoelectric effect in BiFeO3 are not obstacles to the realization of the magnetoresistive memory. Of interest is the memory switchable via piezoelectric layer induced elastic stresses, which uses the bistability of magnetization of the ferromagnetic layer. © 2014 Pleiades Publishing, Ltd.
Ryzhkov S.V.,Moscow State Technical University
Bulletin of the Russian Academy of Sciences: Physics | Year: 2014
Magneto-inertial fusion (MIF) is an original technique of inertial thermonuclear fusion, where spherical and cylindrical gas or plasma configurations are compressed under the action of an external magnetic field. We present a brief review of recent data on laser- and plasma jet-driven MIF systems and possible ways they can be applied. This work also presents problems of and prospects for the application of such approaches. © 2014 Allerton Press, Inc.
Zasetsky A.Y.,Moscow State Technical University
Physical Review Letters | Year: 2011
Dielectric relaxation in liquid water is studied using molecular dynamics (MD) simulations in the temperature range of 240 to 340 K at atmospheric pressure. The main dielectric and fast relaxation mode are identified in the spectra of dipole moment autocorrelation functions. The microscopic origin of the fast dielectric relaxation process, which takes place on a time scale of subpicoseconds at room temperature, is discussed. A new hypothesis for the fast dielectric mode is presented. It is based on the assumption of the intrawell rotational relaxation taking place during the waiting period between thermally activated large angle jumps occurring in the course of changing H-bond partners. © 2011 American Physical Society.
Titov I.,Moscow State Technical University
IEEE Global Engineering Education Conference, EDUCON | Year: 2013
This paper describes a new software web-based system for hosting and sharing on-line laboratories - Labicom platform  available at https://labicom.net. This platform serves the growing needs of expanding technical curriculum into internet-based engineering courses and allows deploying, hosting and sharing laboratory resources between people all over the world. It frees laboratory owners from many responsibilities (such as creating and managing time reservation system, keeping the trusted certificate, etc.) and gives more time and freedom to concentrate on subject specific tasks rather than on computer science. On-line laboratories hosted on Labicom are normally accessible worldwide from modern web-browsers in many languages. Laboratory owners have an opportunity to localize their labs to as many languages as they want. Labicom.net represents multi-tier distributed server-client net of applications. Currently only a few laboratories are connected (Remote Laser Laboratory (RLL) ,  is the most mature) but they are already used in beta-testing. New features and updates are applied regularly and new labs are supposed to join the platform soon. © 2013 IEEE.
Anikin A.Y.,Moscow State Technical University
Russian Journal of Mathematical Physics | Year: 2013
This paper is devoted to an asymptotic formula for splitting of the lowest eigenvalues of a two-dimensional Schrödinger operator with a potential having two symmetric wells. We rigorously prove the corresponding formula, obtained earlier in a paper by J. Brüning, S. Yu. Dobrokhotov, and E. S. Semenov ["Unstable Closed Trajectories, Librations and Splitting of the Lowest Eigenvalues in Quantum Double Well Problem," Regul. Chaotic Dyn. 11 (2), 167-180 (2006)] at the physical level of rigor. The crucial role in our considerations is played by an asymptotic formula for the Maupertuis action (as a function of energy) on a periodic trajectory of the classical system (a libration) lying near a doubly asymptotic trajectory. © 2013 Pleiades Publishing, Ltd.