The processes of vapor generating in closed miniature evaporation-condensation systems with new coolants for space purposes

A complex study of heat transfer processes in constrained conditions in evaporative-condensation systems was carried out for the first time. A physical model of the boiling process on porous surfaces in conditions of limited space was developed and presented. Dependencies for calculating the heat transfer intensity under such conditions have been obtained. Such dependencies are necessary to create miniature cooling systems for microchips and powerful processors of electronic equipment.

Physico-chemical basis for strengthening of the light structural alloys surface by ultrasonic shock treatment at cryogenic temperatures

Essentially new scientific knowledge has been obtained on the physico-materials science basics and the laws of the surface layers hardening of the light structural alloys by ultrasonic shock treatment (UST) at cryogenic temperatures. These regularities are due to the suppression of the dynamic return processes and dynamic recrystallization, as well as the effect of the dislocations annihilation under the action of the deep cooling factor.

Unmanned aircraft and spacecraft thermal imaging systems

A new model of information transformations was developed for remote thermal imaging from an aircraft or space vehicle. This model takes into account characteristics of background, targets, the optical system and the matrix detector, which allows us to explore ways to improve the technical characteristics of the system’s main blocks. The computational algorithms are based on spatial-frequency filtering in the signal propagation paths and allow performing the tasks of analysis and synthesis of systems with or without visual perception. The model is compatible with the current NATO standards.

Regularities of quasihydrostatic compression influence on structure and mechanical properties of crystalline metal-like substances and quasicrystalline metallic materials

For the first time physical representations and theoretical assumptions about the regularities of the influence of quasi-hydrostatic compression, as the most stringent conditions of deformation, on the composition, phase transformations, structure, strength and plastic properties of crystalline metal-like and quasicrystalline metal phases, including titanium hydride with a high hydrogen content and Al-Fe-Cr alloy with finely dispersed particles of quasicrystalline phases.

Theoretical principles of processing of discrete functions with a modular argument and their use for monitoring of human biotelemetric data under emergency situations

The research is aimed to creating of new methods for digital data processing in real time, transmission of the signals under the noise conditions, application of ontological decision-making systems for reducing the time of determining the critical human state and applying an emergency care.

Robust adaptive control of electromechanical systems with improved dynamic performances and energy efficiency

The theory of analysis and synthesis of adaptive electromechanical systems with vector-controlled electrical motors is developed and generalized. Proposed theory allows synthesizing automatic control systems with the properties of robustness to electrical motor parameters variations, thereby improving their dynamic performances and efficiency. Methods for robust adaptive estimation of immeasurable coordinates and identification of unknown parameters of electromechanical converters are developed.

Hydrodynamics and heatmass trasfer in the contact heat utilizator of gas-droplet type

Scientific work is devoted to experimental research, aimed at improving the efficiency of contact heat and mass transfer units by increasing the interfacial surface of heat and mass transfer during the liquid spraying by centrifugal nozzles, implementation of which results in significant savings of material and energy resources.

The multifunctional hardware-software system of diagnostics, physiotherapy and surgery for equipment of fixed and mobile medical centers.

Development of technology and diagnostic equipment, low-frequency electromagnetic therapy and high-frequency electrosurgery for equipping stationary and mobile medical centers. An improved experimental sample of multichannel lowfrequency physiotherapy equipment has been developed. The device is an open type instrument capable of working with a wide range of different inductors in the frequency range from 1 Hz to 20 kHz and the intensity of the magnetic field in two ranges of 1...50 mTl and 10...500 mTl.

Physical principles of creation of new elements of optically-electronic devices on a base mono- and nanoсrystallical silicon carbide

Physical and technological problems of creation of optical radiators and photodetectors, which use the phenomenon of electrical breakdown for its application in optical-electronic devices, are investigated. The usage of silicon carbide with its super-unique properties allows to solve the actual problem of creating of radiation stable, high temperature element basis for the systems of atomic industry, nuclear energy, military and space techniques.

Pages