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Ilkaev R.I.,Federal State Unitary Enterprise

A scientific session of the Physical Sciences Division of the Russian Academy of Sciences (RAS) took place on October 6, 2010 in the Conference Hall of the Lebedev Physical Institute, RAS (FIAN) on the occasion of the 65th anniversary of founding of the Russian Federal Nuclear Center - All-Russia Research Institute of Experimental Physics (RFNC-VNIIEF). RFNC-VNIIEF has powerful computational, experimental, testing, technological, and industrial bases, permitting to rapidly find high-quality solutions to assigned tasks. The institute designed a device (thermonuclear charge RDS-6c) in which the burning of thermonuclear fuel was realized for the first time on August 12, 1953. Fundamental studies of neutron-initiated nuclear processes began at RFNC-VNIIEF with the work on the critical mass of fissile materials in various configurations. The very idea of the fusion-initiation system (FIS) in radiation implosion was formulated in 1954 and a series of experiments on its implementation were soon conducted. Source

Silin R.A.,Federal State Unitary Enterprise

In this Letter to the Editor, I review briefly a historical background of the research on backward waves carried out in the XX century. I also provide a brief introduction to the isofrequency method of analysis for metamaterials and discuss a few unusual examples of wave phenomena at the interfaces. © 2012 Elsevier B.V. Source

Krobka N.I.,Federal State Unitary Enterprise
Gyroscopy and Navigation

The paper considers the differences in accuracy criteria for gyros in two applications: measuring rotation about a fixed axis and measuring rotation about a point. We describe the class of gyro noise with zero spectral density at zero frequency. This noise does not cause errors in angles of rotation (i.e., integrals of angu-lar velocity projections on the gyro sensitivity axis) to accumulate with time, but lead to accumulation of errors in attitude determined by strapdown inertial systems. Ways of identifying gyro noise structure using the known lower order variances are analyzed: two-sample variance (Allan variance), three-sample variance (Hadamar variance), and proposed higher order variances [1]. © 2011 Pleiades Publishing, Ltd.,. Source

Krobka N.I.,Federal State Unitary Enterprise
Gyroscopy and Navigation

Accurate error equations for strapdown interial navigation system (SINS) are derived partly with account of nonideal onboard time scale. Comments are given on specific features of SINS behaviour unnoticed earlier using approximate equations of INS errors. Error equations are first proposed to improve SINS accuracy as well as to analyze it. Limits on SINS accuracy due to quantum noise of Sagnac effect gyros such as laser and fiber-optic gyros and atom interferometers on de Broiglie waves [1] are estimated. © 2014 Pleiades Publishing, Ltd. Source

Dolmatov V.Y.,Federal State Unitary Enterprise
Journal of Superhard Materials

The paper presents the main findings of the investigation into the potential of using detonation nanodiamonds and diamond-containing soot (an intermediate product of the nanodiamond synthesis) as high-performance antifriction and wear-preventive additives to oil-based compounds. The application of these products is demonstrated to offer great benefits: the lifetime of tools and parts is extended 1.5-4.0 times and the ultimate load values for a friction pair are raised 4-fold. © 2010 Allerton Press, Inc. Source

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