Vol 5, No 2-1 (2006): Special Issue

Full Issue

TECHNICAL SCIENCES
Liquid propellant rocket engines designed by N.D. Kuznetsov Сompany
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Abstract
Historic references of liquid propellant rocket engines (LPRE) design and development in N.D. Kuznetsov STC are given in the article. A collective group of engineers and technicians of an experimental plant № 276 (now N. D. Kuznetsov STC) was charged with an important mission of joint design and development of LPRE on initiative of S.P. Korolyov who visited the plant and experimental bureau in 1958.
Within the period from June 1959 to May 1974 the collective body of the plant headed by N.D. Kuznetsov designed and developed for the first time in the world LPRE of a “closed” circuit generating thrust within the range of 350 kN up to 1800 kN operating with liquid propellant components of which were kerosene – oxygen.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):16-22
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Environmental safety problem realization of carrier rocket launching with enterprise engineering paying load
1 1., 1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

Commissioning of space technology is inevitably associated with minimization of its harmful effect on the environment. The report summarizes knowledge, obtained by SRPSRC “TsSKB - Progress”, of minimization of effect on the environment produced by the elaborated products including experience of obtaining decisions of the State Ecological Commission of Experts and experimental demonstration of the product’s ecological safety.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):23-27
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Development and a heading of production processes of manufacture of exact workpieces of compressor blades of a turbine engine on the exposed joint-stock Company "Motorostroutel"
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Abstract
In the given article effects of operation of specialists of exposed joint-stock company "Motorostroitel" on development, perfecting and a heading of production processes and inventories for manufacture of exact workpieces of blades of air engines of gas-turbine engines are reduced. The assaying of progressive production processes of obtaining of workpieces (isothermal pressure forming, pressure forming in a condition of a superplastic warping, a high-velocity forming) is given. Overall technical-and-economic indexes of a high-velocity forming in comparison with conventional die massive forming are given.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):28-32
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Examination of energy and power parameters of high-speed tups of modifications VSM-2 and VSM-4
1 1., 1 1., 1 1.
Abstract

In the given article authors explore energy and power parameters of high-speed counterblow hammers of modifications VSM-2 and VSM-4, exact workpieces of component parts of aero-engines used for obtaining. The scheme of operation of a tup at which the warping is yielded by the piston (collet) at its accelerated course from a hydraulic control of the secondary generator is offered. The scheme of operation at which the significantdiminution of an impact energy due to flooring gas channels is reached is developed for tup VSM-2.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):33-38
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The application loop labyrinth seals (LLS) for increasing effect of automatic unload bearings system (AUBS) turbopumps
1 1., 1 1., 1 1., 1 1.
Abstract

Results experimental investigations LLS in CIAM with labirinth chambers different configuration is generalised. The axis displacement crests of rotor are increasing effect of AUBS. The use of LLS in AUBS may to increase effect AUBS.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):39-44
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Results of the development testing of demonstration pulsed engines and rational areas of their implementation
1 1., 1 1., 1 1., 1 1.
Abstract

Prospects of application in aircraft of pulsing detonation engines of the new original construction - not having analogues in a world practice are considered. The report presents the results of the experimental study of the models of high-frequency pulsed detonation engines (PDE) of an original design operating on kerosene-air combustible mixtures, and a preliminary analysis of the efficiency of the practical use of such systems. The studies performed represent the next step in developing effective PDE.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):45-51
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Comparative trials of pre-production sylphones models, made of titanic alloy ВТ1-0 and from stainless steel 12Х18Н10Т
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Abstract
Now pipeline systems of flying devices are in most cases executed with application of the facilitated high-strength elements made of titanic alloys and stainless steels. It allows to achieve minimum mass with saving demanded durability and longevity both separate details, and the pipeline as a whole.
In a paper comparative trials of pre-production sylphones models, made of titanic alloy ВТ1-0 and from stainless steel 12Х18Н10Т by punching by the elastic environment from rolled preforms are described. The purpose of trials was the estimation of experimental technological process of punching sylphones the elastic environment from rolled preforms, definition technological and design features and an opportunity of use of two-layer equalisers from a titanic alloy and stainless steel in pipelines of air systems.
The results received during trials allow to state a positive estimation to experimental technological process of punching sylphones the elastic environment from rolled preforms and to recommend wide application of the two-layer equalisers made of a titanic alloy and stainless steel, in pipelines of air systems.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):52-55
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Jet noise generation near a locally reacting surface
1 1., 1 1., 1 1.
Abstract

An investigation of subsonic jet noise far field near an impedanse boundary is carried out on the base of Lighthill acoustic analogy and Green function method. A significant effect of surface acoustic features on a generation and a propagation of a turbulent gas stream noise is shown.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):56-60
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Development of up-to-date means of automation using 3D-simulation to develop control programmes of turbine blade plasma spraying abstract
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

The article shows the urgency of using plasma technology of applying protective coatings on runner and nozzle blades of ground-based gas - turbine installations. Conditions of operation of blades coated with NICoCrAIY+Zr02+Y203 and the demands set for the technology of their being coated is shown in brief. The advantages of using computer - aided complex of plasma spraying TC3P-MJ R - 1000 with a KUKA robot for obtaining high - resource coatings 01 gas turbine blades are discussed. As the programmes are developed in the mode of manual robot teaching and the process takes a long time we suggest using CAD/CAM/CAB systems to produce a virtual spraying model.
This will make it possible to reduce the time needed for the technological preparation of production and the costs of development as will as to improve the service life of the blades.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):61-64
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The features of gas flow streamline in turbine blades
1 1.
Abstract

Taking into consideration of non-steady-state flow in working wheel allows to specify loss changes of full pressure in working blades and changes of main parameters of turbine on different working regimes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):65-68
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Some features of seals with spring preloaded semi-movable rings calculation
1 1.
Abstract

The seals with semi-movable rings are widely used in rocket engines pumps. One of abnormal function of this seals causes is – contact of rotor and stator elements. This occurs due to incorrect selection of seal clearance or because the rotor makes the ring to rotate – in equal and opposite direction of rotor and ring rotation. Use of the axial preload by spring in the semi-movable seal design is one of the ways to eliminate the semi-movable ring rotation in full range of turbopumps operation modes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):69-74
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The mechanism of formation of antifrictional coverings at strengthening processing
1 1.
Abstract

In the article questions of technology the receiving the antifrictional copper-containing coverings are considered. On the basis of the theory of chemical reactions and the analysis of adhesive connections the questions of formation of diffusion layer providing reliable coupling of a covering with a basis are considered. Values of factor of diffusion, diffusion permeability for various kinds crystal lattices are resulted.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):75-80
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The method of calculation of optimum thickness of antifrictional coverings
1 1.
Abstract

The method of definition of optimum thickness of antifrictional coverings on the basis of the decision of a problem of indentation of an individual edge in a surface is offered in the article. The tribotechnical characteristics of coverings of surfaces are determined providing the minimal wearing and reduction of time of running-in.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):81-84
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Analysis of vibrational state of rolling contact bearings during their runout
1 1., 1 1.
Abstract

The results of abrasion testing of rolling contact bearings on a special plant with a simultaneous registration of their vibration state are described here. Variation of rolling contact bearings vibration state and their respective abrasion evaluated according to the radial and axial clearance increase and the bearing’s weight loss is evaluated here.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):85-89
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Investigation of vibrational state of rolling contact bearings during their runout. Experimential data analysis based upon the spectrum of peaks
1 1., 1 1.
Abstract

On the basis of the analysis of the results of abrasion testing of rolling contact bearings based upon the spectrums of peaks of the broadband vibration process the possibility of using the retainer’s relative rotational frequency and the relative energy of modulation components as the diagnostic characters of abrasion is shown.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):90-93
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Model operation of permanent deformation on the surface of the gas-turbine engine blades and determination of blade deformation after removal the surface with tempers
1 1., 1 1., 1 1., 1 1.
Abstract

The article is devoted to the actual problem of the up-to-date aviation propulsion engineering – the problem of occurrence of permanent deformation on the surface of the blades of gas-turbine engine. In the article the results of the development work creation models, which permit to discount the permanent deformation during the operation designing electrochemical processing (ECM) and allow reducing time of the lapping operation. Areas of use this models are discussed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):94-98
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Model operation of electrolyte in the spark gap at the electrochemical working compressor blades with using method of final elements in the software environment “FLUENT”
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Abstract
The article is devoted to the actual problem of the up-to-date aviation propulsion engineering – the raising of form accuracy at the electrochemical working. In the article the results of the development work with respect to creation methodology of model operation of electrolyte current in the spark gap are presented. Proper models are submitted. Areas of use of results of work are discussed.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):99-103
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Model operation of thermo elastic deformation at the electrochemical working compressor blades with using method of final elements in the software environment “ANSYS”
1 1., 1 1., 1 1., 1 1.
Abstract

The article is devoted to the actual problem of the up-to-date aviation propulsion engineering – the model operation of thermo elastic deformation at the electrochemical working compressor blades. In the article the results of the development work of creation methodology of model operation of thermal load and value calculation of blade deformation by method of final elements in the software environment “Ansys” are presented. Areas of using this method are discussed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):104-108
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Technological heredity end constructional durability
1 1.
Abstract

The requirements for the control of introduced structural materials and stability of technological processes providing the component life and reliability are formulated on the basis of the criteria limiting bearing capacity under static, cyclic and multicyclic loading GTE.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):109-114
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Fretting-corrosion and fretting-fatique in low-moving joinst
1 1.
Abstract

The mechanisms of fretting-corrosion and fretting-fatigue features of strain-stress state in contact zones of parts, under fretting-fatigue are considered. Experimental data of fretting impact study on fatigue resistance of structure materials are given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):115-120
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Increase of efficiency of systems of cooling of power installations with coil heat exchanger from gilled tube pipes
1 1.
Abstract

Results of the performed research and practical work directed on use in the industry of new technologies and designs coil heat exchanger of devices from gilled tube of pipes, used in technological lines for manufacture of details and units of cars VAZ are presented. Represented heat exchanger devices are small-sized, effective and reliable devices for hydrosystems and systems of cooling of power installations and other industrial equipment. A way of manufacturing coil THAT and designs are protected by patents of the Russian Federation.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):121-125
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Determination of the borders transition type of friction in nestacionarno loaded podshipnkah slides on parameter gidrodinamicheskih and heat processes in lubrificant
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Abstract
It is Theoretically motivated and experimental is confirmed wealth offered analytical model of the calculation, most adequately valuing separation of the heat in lubrificant for the general event of dynamic exhibit of the load that has in turn allowed to formulate the positions to methodologies of the determination of the conditions transition type of friction and estimations on this base of the efficiency of the decisions, raising capacity to work high loaded bearing of the slide.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):126-131
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Dynamic micro alloing strengthening of high-speed steel tool cutting part for machining of aircraft engine ccomponents
1 1., 1 1.
Abstract

It is offered to hard the machining tool be made of high-speed steel by interaction between a high-speed jet of working substance and steel - the dynamic micro alloying. Structural changes, occurring in steel, lead to increase of wear resistant of the cutter.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):132-135
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Possibility of the rise exploitation resistence details aircraft engines of the creation ordered dislocation structures
1 1.
Abstract

Method mechanical thermal processing increase of operational resistance of details gas-turbine engines.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):136-138
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Durability of grinding circles and their constructions
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Abstract
The method of calculation of durability of grinding circles is described. Various constructions of grinding circles are considered, such as integral and modular circles with direct and cup-cylindrical profile with interrupted, discontinuous, compositional and combined cutting surface. Parametrical models are made for this type of grinding circles, which allows calculating stresses at various conditions. Also is made analysis of demand torque forces on intense condition of grinding circle.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):139-143
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Analytical estimation of postoperational condition of high pressure turbine blades of ДЦ 59Л and ДЖ59 engines and their damage control features
1 1., 1 1., 1 1., 1 1.
Abstract

After the completion of HPT engine ДЦ59Л, ДЖ59 designed service life the set of blades has been analyzed in order to determine its maintainability. Mechanical properties, micro-and fine structure of blades in an initial conditions and after the recovery high-heat treatment have been identified. It is established that this set of blades is repairable, the recovery high-heat treatment improves mechanical properties of blades and stabilizes the structure of their alloy.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):144-148
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Postoperational condition analysis and overhal-period renewal technology of blades in gas turbine engines and gas-compressor units
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Abstract
The condition of a material blades of the turbine of units after operation with a different operating time is investigated. The technology of prolongation of a resource blades is developed.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):149-153
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Evaluation of influence moisture content in an air on gte parameters
1 1.
Abstract

The outcomes of computational research of influence moisture content in an air on parameters of the engine are adduced. The obtained outcomes show necessity of the use in mathematical models GTE of influence of change of physical properties of a working skew field to the characteristics of units.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):154-156
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The information chanales of aviation GTE in board conditions control task
1 1., 1 1.
Abstract

In this article authors are considering classic identification methods and a neural network based method. It is shown that it is possible to use neural networks for estimating of complex object’s outputs on the base of current inputs and previous outputs. Also authors provide a method for defining of optimal structure of a neural network. As a complex object a Gas Turbine Engine was considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):157-161
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Prediction of creep and long-term strength of heat-resistant steels and alloys
1 1.
Abstract

The method for the combined prediction of creep and long-term strength of heat-resistant steels and alloys is presented, and the results of processing more than 1000 diagrams of long-term strength of the National Institute for Materials Science in Tokyo using the parametrical methods and the method of base diagrams are given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):162-167
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On the interrelation of the regularities of long-term fracture established in testing of smooth and notched specimens
1 1., 1 1., 1 1.
Abstract

It is shown that the experience of processing the large amounts of experimental data on the long-term strength of heat-resistant steels and alloys using the method of base diagrams, which were obtained from testing of smooth specimens, can be used effectively for proper processing of test results for notched specimens.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):168-173
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On the use of the method of base diagrams for specifying the prediction of the long-term strength of heat-resistant nickel-base alloys
1 1.
Abstract

The results of processing the available data on the long-term strength of heat-resistant nickel-base alloys using the method of base diagrams are presented. These data were obtained for short durations of loading. The possibilities are shown for considerable refining of the long-term strength prediction in the similar cases on the basis of processing the data on the long-duration tests.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):174-179
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Method multifactorial planning of experiments at research characteristics and processes of air turbine engines
1 1., 1 1., 1 1.
Abstract

The method multifactorial planning of experiments is observed at research of characteristics and processes of air turbine engines.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):180-184
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Imitating modelling operation of aircraft gas-turbine engines
1 1., 1 1., 1 1.
Abstract

The method of construction of imitating model is considered operation of aircraft gas-turbine engines. The imitating model is intended for the decision of a problem of optimization of life cycle aviation gas-turbine engines

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):185-188
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Increase of efficiency of accelerated corrosion tests of nozzle vanes of a turbine engine
1 1., 1 1.
Abstract

In the given activity the method of modelling of the high-temperature gas corrosion is considered, based on purposeful complex effect and allowing to receive results, close to real operation conditions, for shorter time in comparison with duration of operation.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):189-192
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Multidisciplinary system for process analyzing in air-breathing engine afterburner
1 1., 1 1.
Abstract

Common problems of gas turbine combustors modeling and elaboration of multidisciplinary computer analysis system for this purpose are discussed. “Afterburner”-system version based on module approach for different types of analysis of air-breathing engine augmenter is considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):193-196
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Modernisation of method of definition of rational conditions of processing at finish operations of processing workpieces
1 1., 1 1.
Abstract

The advanced method of definition of rational conditions of processing and mathematical models for turning and boring operations and also the round external and internal grinding are submitted, allowing essentially simplify a problem of a finding of the optimal conditions of cutting at processing cylindrical and conic surfaces.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):197-202
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About visualizations pulsing currents of the liquids through concentrated resistance
1 1., 1 1., 1 1., 1 1.
Abstract

At present formed the integer scientific direction, resting in methods of the lazer visualization and registrations visual’s currents . The Author of the report is designed design of the test camera for lazer-optical visualization pulsing ents of the liquids through concentrated hydraulic resistances and technology of the undertaking natural experiment with simultaneous registration visual’s currents. For standard current, existing under pulsing current to liquids through thin diaphragm, is formed algorithm and program for RS, allowing get the main features of the current upon their visual’s to scenes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):203-207
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About measurement of pulsations of pressure in flowing part GTE
1 1., 1 1., 1 1.
Abstract

Authors solve a number of the problem devoted to reduction of a dynamic error of means of measurement of pulsations of pressure in flowing part ГТД in extreme for them conditions of operation. The method, algorithm and the program of calculation frequency characteristics of means of measurement of pulsations of pressure with adjusting elements are developed, on the basis of which the choice of optimum parameters of adjusting elements is carried out, at which uniform transfer (is provided within the limits of an allowable dynamic error) pulsations of pressure from a point of measurement up to the gauge.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):208-212
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Calculation and optimization power characteristics pump units of rocket engines
1 1., 1 1.
Abstract

Now in connection with a high level of development of rocket technics modernization and improvement of already existing and used pump units is actual. Expedient development and introduction of new techniques and algorithms by calculation and optimization of pumps which allow to receive the greatest possible values of pressure head characteristics depending on variations of design data therefore is.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):213-217
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Control algorithms optimization at forming of the interacted effects in the balancing fuel transfer control system of the aircraft
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Abstract
The article represents the development of graph methods of analytical model building, which describes the control process dynamics. The forming of the interacted control is effected taking into account the existing status of the control and actuating elements with the time changes of the control system status. The information – measuring model of this class of the automatic control system is formed according to the revealed signs. Algorithms of effects forming according to the status of the control elements, which don’t characterize the system behavior unilaterally, are introduced in the control circuit according to the revealed signs.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):218-223
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Analysis of methods of evaluation of energy dispersion in constructive damping devices
1 1., 1 1., 1 1.
Abstract

Attempts of different authors to use standard definition of dispersion coefficient for constructive damping devices directly led to distortion of it’s strong physical sense. A new physical proved way of definition of dispersion coefficient for such devices is introduced.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):224-229
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Solution for the problem of metallization within structure of high pressure solid propellant gas generator
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Abstract
A gas generator is a device which is sensitive for electrical discharge caused by electrostatic charges. When nipple connection of initiation unit and gas generator lid is used the metallization is provided through cone surfaces contact of the units to be mated. This way of metallization is optimal when operational conditions are regulated strictly. In order to make gas generator operational requirements less strict and enhance operational safety the gas generator structure was changed (i.e., way of metallization).
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):230-233
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Elastic deformation of fan blades as a factor, influencing the gas-dynamic unbalance
1 1., 1 1.
Abstract

The results of measurement of elastic deviation of periphery part of by-pass turbojet fan blade in operation are given. The effect of this factor on gas-dynamic unbalance in a fan wheel is estimated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):234-237
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Matching of free-turbine and gas-centrifugal-compressor rotational speeds in the gas-pumping unit
1 1.
Abstract

The comparison of the permissible rotational speed of a free turbine of drive gas-turbine engine, which is determined by blade strength, with the required rotational speed of gas-centrifugal compressor in gas-pumping unit as a function of power is given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):238-240
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Ensuring the reliability of the nozzle guide vane operation of the 1st stage of high-temperature gas turbine
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Abstract
The early stage vanes are among the major components of the high-temperature gas turbines that have significant influence on the failure-free operation parameters of the engine as a whole.
The article deals with the data on the occurrence of cooling defect of the nozzle guide vanes of the 1st stage of the turbine of the engine unit of the supersonic aircraft, as well as with the set of actions to ensure the required level of reliability of operation for this particular unit and for the engine as a whole.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):241-245
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The using of powder compositions in melting of aluminium cast alloys
1 1., 1 1.
Abstract

The mechanism of interaction powder (Mn, Fe and other) with melt in process of cast aluminum alloys have been developed. The causes of exothermal effects in the articles are shown. The presented data show the temperature of reaction and solution powders metals in melting aluminium.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):246-251
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Gap calculation in rocket engine turbopumps non contact seals
1 1., 1 1.
Abstract

During a rocket engine development one of the main question is calculation of the gap between pumps and turbines seal’s rotor and stator elements. In this article considered gap choice with analysis of various design and production factors.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):252-257
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On lubrication of power turbine bearings in NK-37 gas turbine
1 1., 1 1., 1 1.
Abstract

A devise providing power turbine bearings lubrication in NK-37 gas turbine for electric generator drive is described in the report lubrication is required during power turbine rotor run-down.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):258-261
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Optimization of the residai stress in the surface layer of the blades is the method of the increasing reliability and resource
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Abstract
The results of the analysis of the stressed state in the blades of the compressor are represented. The ability of rising the fabgue limit of the blades, at the expense of optimization of the residal stress by improving the finishing hardening - the finishing treatment, shown.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):262-266
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Design peculiarities of the main systems and parts of detonation engines
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Abstract
In the work there are defined the main trends in the development of jet engines; there are given grounds to the necessity of creation of detonation engines that are considered to be one of the advanced and perspective; there are pointed out the advantages of detonation engines; there is a description of their functioning principle and design peculiarities.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):267-271
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Theoretical substantiation of gasodynamic parameters of internal chamber processes in detonation engines
1 1.
Abstract

In the article there is presented a calculation scheme of the main gasodynamic parameters of the processes that take place in the chamber of detonation engines. The solution of this question is in the determination of the parameters of gas stream following the detonation wave in the tube that is blocked at the one side and filled with an explosive mixture at the other side.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):272-276
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Research of vibration intensity of elastic metal-plastic sliding bearings with water lubrication on turbo-generator K100-90 of the "Slavic" state district power station and feed-pump PEN-11 of the "Bezimyanskaya" thermal power station
1 1., 1 1.
Abstract

Decrease of frequency of fires on thermal power stations by exclusion of oil for lubrication of sliding bearings is scientifically proved. Theoretically and experimentally it is proved, that due to elastic-effect elastic metal-plastic (EMP) sliding bearings are efficient and reliable at their water lubrication instead of oil lubrication and on the dynamic characteristics they meet the requirements of technical maintenance of turbo-generators.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):277-281
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The analysis of the crimp seal-forming process in the LS–DYNA system
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Abstract
The determination of optimal characteristics of technologic processes of production of thin-walled envelopes of air and space craft engines connected with the providing of several requirements to obtained items. You may wish to see the technique of the operation’s calculation of crimp seal – forming of blank parts by the data of minimal variations in thickness of obtained parts group.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):282-285
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The determination of optimal characteristics of technologic processes of production
., ., ., .
Abstract
The determination of optimal characteristics of technologic processes of production of thin-walled envelopes of air and space craft engines connected with the providing of several requirements to obtained items. You may wish to see the technique of the operation’s calculation of crimp seal – forming of blank parts by the data of minimal variations in thickness of obtained parts group.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):286-289
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Relaxation non-linear damping as the basis of engine elements and units operational analysis
1 1.
Abstract

The paper describes a non-linear relaxation damping model and the results of the study on its basis of dynamics of various objects.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):290-295
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Definition of parameters of strength reliability of details of aircraft engines at a design stage
1 1., 1 1.
Abstract

The technique of definition of parameters of no-failure operation of aircraft engines details is in-process observed. For this purpose the dispersion of stresses in a detail by a method of a linearization and the Monte-Carlo method offered by authors in a packet of certainly-element analysis ANSYS is considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):296-301
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Rotor-vane machine preliminary tests
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Abstract
The review presents the results on rotor-vane machine (RVM) preliminary tests. Basic characteristics of operating process: productivity, hermetic factor, thermodynamic efficiency are given. The promising nature of operating RVM as internal combustion engine is shown.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):302-305
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Results of experimental tests of «dry» seals for NK-37 gas turвine separate compressor with the use of air as working body
1 1., 1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

Results of experimental development of «dry» seals for support frames of a gas turbine separate compressor modules are given in the article. Air was used as working body for tests. Tests were aimed at estimation of leaks through «dry» seals at operating regimes calculated for operation with natural gas.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):306-310
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Use of model of a high level for perfection of technology of electrochemical processing in view of secondary distribution of potentials in an interelectrode backlash
1 1., 1 1., 1 1.
Abstract

In the given work distribution of local removal of a material of the anode has been investigated at electrochemical processing in view of polarization of electrodes, and also in program complex ANSYS electric fields for a threeelectrode cell in view of secondary distribution of potentials have been simulated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):311-316
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Modeling of electric fields in an electrochemical cell in conditions of electrochemical processing by means of program ANSYS
1 1., 1 1., 1 1.
Abstract

Researches were carried out in the given work on studying one of methods of localization of currents of dispersion, namely a method of cathodic protection. The technique of use of program complex ANSYS for modeling electric fields in two and three electrode cells has been fulfilled.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):317-321
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Methods of modeling in problems of rotordynamics and vibration diagnostics of rotor systems with fluid-film bearings
1 1.
Abstract

Some questions of modeling of high-speed rotor systems with fluid-film bearings are considered. Features of application of some linear and non-linear models in calculations of dynamic characteristics of rotor systems are described. Advantages of application of mathematical models in the problems of vibration diagnostics of rotor systems with hydrostatodynamic and hydrodynamic bearings are shown. Basic requirements to adequate modeling of high-speed rotor systems with fluid-film bearings are described.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):322-327
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A method of calculation of 3D motion of a rigid rotor with fluid-film bearings
1 1., 1 1., 1 1.
Abstract

An algorithm of calculation of 3D motion of a rigid unbalanced rotor with fluid-film bearings taking into consideration influence of contactless seals is presented. The basic equations of dynamics of a rigid rotor are given and a numerical method for its solution is described. The trajectories of journal centers obtained by means of the developed algorithm are presented.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):328-332
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Improvement of turbocompressor rotor supports of engines with chemical fuel elements by means of combination ball bearing and fluid-film bearings according to a successive scheme
1 1., 1 1., 1 1.
Abstract

The article analyses possibility of application of high-speed combined bearings in turbomachines of engines with chemical fuel elements. Advantages of using combined bearings in comparison with application only ball bearing or only fluid-film bearing are substantiated. An approach to determination of conditions of bearing switching and function of rotation speeds of bearings on the base of developed mathematical models is proposed. Comparison of obtained results with experimental data of other authors is presented.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):333-338
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Interaction between a piston ring and a deformed cylinder liner of the internal combustion engine
1 1.
Abstract

The pressure distribution of piston rings against the liner wall is significant for their performance in the running engine. Hence, a program has been developed for numerical calculation of the pressure distribution and the gaps between a piston ring and a cylinder liner. The model takes into account: the shape of the cylinder liner and the piston ring, both the hydrodynamic and asperity interaction and the oil starvation.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):339-343
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A method for evaluation of power loss of the simple action type stirling engine due to piston leakage
., .
Abstract
The effectiveness of the expanding gas in converting its pressure energy into mechanical work clearly depends on power piston being well sealed in the cylinder in which it moves. The Schmidt ideal isotermal analysis of a working cycle of the Stirling engine was used in order to determine this dependence. As a result the approximate formulae for the leakage and for the power loss have been derived and are presented.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):344-347
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Estimation of aviation engines D-30KP/KU/KU-154 technical condition by scintillation measuring
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

We suggest using the scintillation spectral method for estimation of technical state of the aircraft engines through the measurement of the wear particles parameters.
We present concrete examples when the method allows the unit-to-unit diagnostics of engine. The necessity is demonstrated to account the information on the wear particles collected at the main oil filter for the adequate diagnostics of the oil system.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):348-352
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Technical ceramics wearing calculation based on invariant-theoretic method
1 1., 1 1.
Abstract

Advanced ceramic materials are increasingly being used in practice. Forecasting of tribological performance of ceramics is a very complicated problem due to the sophisticated wear mechanisms of ceramics and its fracture behavior. This paper develops wear prediction method for this class of materials on the basis of theoretical – invariant method.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):353-356
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Experimental investigations on revealing effective means for suppressing cavitation self-exciting oscillations in a propellants supply system of LRE
1 1.
Abstract

The self-exciting oscillations in LRE propellants supply systems can provoke resonance oscillations of engine design elements and breakdown of some its units. They can also influence longitudinal stability of rockets, since their frequency values are usually close to a frequence range of longitudinal oscillation first modes for elastic bodies of liquid propellant launchers.
In order to increase stability of LRE propellants supply system and longitudinal stability of launchers a special design of screw inducer (screw with radial slots in each blade) has been developed that allow to suppress the cavitation self-exciting oscillations very effectively.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):357-360
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Tests of experimental lre chambers with nozzle’s extensions from CCCM material
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

The paper presents results of firing tests of experimental LRE chambers with nozzle’s extensions from carbon-carbon composite material (CCCM), as well as design-technological specifities at manufacture of CCCM extension. The results of experimental works are positive.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):361-365
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Experimental investigations of radial slot seal with floating rings in pump for LRE TPU, at misalignment of axes
1 1.
Abstract

The paper presents results of experimental investigations of serviceability for radial slot seals with floating rings at various angles of axes misalignment. The results show that a misalignment between axes of the floating ring and shaft in LRE TPU pump can lead to ignition of the pump. Recommendations are given to increase serviceability of the floating rings in pumps at misalignment of the seal axes.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):366-371
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Automatic control system development experience of BARK-93 unit of RD-33 engine
., .
Abstract
The article presents the development experience of the electronic automatic control system for the RD-93 engine based on the BARK-93 unit. The automatic control system of the RD-33 family engines was improved with the new control programs and the enchanced power plant and self-diagnosis functions. During the engine bench tests and the flight tests BARK-93 proved to be a reliable system, provided the high precision of the given monitoring and control programs execution.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):372-375
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Estimation of influence of elastic bending deformations of a rotor on static and dynamic characteristics of fluid-film bearings and contactless seals
1 1.
Abstract

This article describes existing methods of calculation of a radial clearance function of fluid-film bearings and contactless seals. A new method of calculation of a radial clearance function in a circular eccentric clearance is offered. This method takes into consideration of elastic bending deformations of a rotor under assumption of an elastic rotor curve is described by an arc of a circle. Conclusion about rationality of complication of methods of calculation of circular eccentric clearance geometry for fluid-film bearings and contactless seals is presented.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):376-380
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Burning process in combustion chambers of new generation powerplants
1 1., 1 1.
Abstract

This paper analyses combustion process in powerplants running on powdered metal fuels and is based on comprehensive study of air-aluminum mixture ignition, combustion and flame stabilization processes in a straight-flow combustion chamber with sudden expansion.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):381-386
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The research of discharge processes, resulting at the ignition high-voltage system engine in secondary spark formation time
1 1.
Abstract

This article has dedicated to discharge processes research, resulting at the explosion engine ignition high-voltage systems. The job considers the questions of determining of signal spectral distribution in secondary spark formation time. Was fulfill the investigation discharge current variation dynamics depending on air-fuel mixture state at the piston engine cylinder. Specified the power of signal, proceeding at capacitive phase moment of electrical discharge on spark for engine different conditions.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):387-391
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Development of vibration isolator mathematical model with the spherical elastic-damping element from the МR матerial
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

Analytical definition for elastic-hysteresis of the vibration isolator characteristics with thin-walled elastic-damping element from a МR material of a spherical type are considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):392-396
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Research of the quantitative characteristics technologies of manufacturing of products from a material МR
1 1., 1 1., 1 1.
Abstract

The results of research before unknown communications between pressure of pressing the cartridges of samples from a material МR, relative density of a ready product for various parities of diameters of a spiral in a diameter of a wire are given. The limiting allowable sizes of relative deformations elastic-damping of elements for the given initial relative density are found. Are offered new kriterials of coordinate of representation of fields elastic-damping of loops giving the greatest possible degree of concentration of the information about loading the characteristics of considered elements.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):397-400
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New approach to the GTE theory expounding
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

Features of GTE theory expounding in the new manual printed in the “Mashinostroenie” publishing house in 2002 and 2005 are stated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(2-1):401-405
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