Vol 5, No 1 (2006)

Full Issue

AIRCRAFT AND SPACE ROCKET ENGINEERING
Procedure of evaluating the dynamic component of gravity force for aerospace centrifuges
1 1.
Abstract

The procedure of evaluating the adequacy of the dynamic component of artificial and natural force of gravity (aerospace centrifuges and the Earth surface) has been developed. Distributions of amplitude values of ante grade and retrograde flows in arteries along the longitudinal coordinate and their response to external disturbance – tests for 4 groups of people of different sex and age have been obtained. Recommendations for programmers of experiments on short-radius centrifuges have been stated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):9-14
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Simulating thermal fields of complex closed structure aboard research space laboratory
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

Thermal fields are simulated inside the reentry vehicle (RV) of the space lab “Proton”. The object under investigation is a sphere filledwith airwith solid heat – releasing bodies (scientific devices and apparatus), heat regulations system and fans inside it.
The results obtained provide an idea of the objects temperature conditions depending on the operating condition of the heat regulation system. They also make it possible to elaborate recommendation to improve the system’s efficiency and to simulate the heat flowers in advance numerically for optimal location of scientific apparatus inside the RV.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):15-23
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Joint operation ofaircraft gas turbine engines and fuel automated equipment in acceleration and braking modes
1 1., 1 1., 1 1.
Abstract

Problems of joint modeling of aircraft turbojet engines and fuel-regulating equipment in transition processes are discussed. Two approaches are compared- the method of structural patters, transfer functions, using Laplase transformations accepted for designing control systems and the method based on imitation modeling which is used when designing an engine. The paper shows the necessity of creating devices to carry out investigations and to analyze the engine dynamic in conjunction with the system of automatic regulation.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):24-33
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Problems of relational navigation in load transporation on helicopter external hanger
1 1., 1 1., 1 1.
Abstract

The authors investigate the possibility of using a satellite radio navigation system for satellite support of load transportation on a helicopter external hanger. Afunctional scheme of solving the task of navigation and an algorismof determining the vector of relative position of the helicopter and the load when complexing the measurements coming from two navigation receivers are given. The scheme proposed is assessed by the numerical results of statisticmodelling of the algorithms under consideration.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):34-41
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Optimization of a thin-walled wireframe structure with strength and stiffness limitations
1 1., 1 1.
Abstract

Peculiarities and algorithm of optimizing combined structures are discussed, engine pylon design taken as an example, with regard to a wide range of restrictions.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):42-47
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Analysis of temperature field at the combustion chamber outletwith the flowturning in the gas collector
1 1., 1 1., 1 1.
Abstract

The paper analyses the results of numerical modelling of gas-dynamic processes in the dilution area and the gas collector in the combustion chamber with radial liners. Modelling is carried out with the help of ANSYS software complex. The impact of geometrical and regime parameters on the maximum nonuniformity of temperature field at the chamber outlet is investigated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):48-53
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Estimation of technogenetic substance flow density distribution in time and spacewith regard to local breakages of space vehicle compartments
1 1.
Abstract

The paper considers an approach which makes it possible to estimate Technogenetic substance flow density distribution in time and space. The is a cloud of fragments of the broken space vehicle compartments. Specific indicators are chosen to estimate the cloud parameters. The solution of the problem involves modeling the breakage of a space vehicle compartment with a given number of fragments in the cloud. The fragments masses, ballistic coefficients, velocities and directions of flying are chosen. The orbits of the fragments formed and their further evolution are calculated. The author proposes making estimations for certain given values of volume calculated relative to the basic trajectory of the space vehicle broken. The modeling results for the chosen case of space vehicle breakage are given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):54-61
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Method of choosing parameters of space observation system orbital structure
1 1., 1 1.
Abstract

The paper proposes a method for solving the task of choosing parameters of space observation system orbital structure which consists of several space vehicles. An indicator of minimal periodicity of observations is used. The method is based on the model of guaranteed observation periodicity using visibility areas. Results of choosing orbital structure parameters are given and compared with the results obtained by the traditional method of constructing a space observation system orbital structure.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):62-68
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Experimental analysis of pulsation and vibration processes in flow – construction interaction
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

An automatic diagnostic complex has been developed and tested. It was designed on the basis of combined use of an interference – proof digital speckle – interferometer and the schlieren method. Processes ofmembrane combined excitation in a laminar gas flow and non – linear changes of configuration of the main of the oscillations analyzed in a turbulent flow are revealed. The diagnostic complex will find application in analysing ware interaction of working media and construction in many areas of science and technology.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):69-76
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Control over orbital tether system unfolding
1 1., 1 1.
Abstract

The process of unfolding orbital tether systems is discussed. Laws of nominal control over the unfolding are suggested and analyzed. The existing laws and the proposed ones are compared.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):77-85
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Optimal positioning of supports for statically definable beams
1 1., 1 1.
Abstract

The paper present solution of several problems of positioning the supports of statically definable beams according to the bending moment peak minimum criterion. The solution are intended to estimate the efficiency of numerical methods of construction optimization.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):86-92
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Acoustic whirling resonance of an aircraft fuel pump screw
1 1.
Abstract

The paper describes a combined fuel unit consisting of two stages- the screw centrifugal stage and the main pinion stage.A model of whirling disturbances interaction in the screw centrifugal stage with screw blades oscillating has been developed. The model takes into account the impact of hydrodynamic processes in the pinion stage. The model describes resonance increase of the frequencies of the screw own oscillations, vibroacoustic influence of the pinion stage and the stalling of end whirls. The experiments show the adequacy of the model designed to the real process.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):93-100
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Application of gas dynamics numerical methods for the analysis of nitrogen oxide formation process and choosing low emission combustor design
1 1., 1 1.
Abstract

The paper deals with the problems of mathematical modeling of physical and chemical processes in gas-turbine engine combustors. Multicomponent reacting gas flow in a combustor is calculated. Using the results of a series of combustor parametrical calculations a liner design is selected with a minimum level of nitrogen oxide emission.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):101-112
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Organization of search and evacuation of reentry vehicles and capsules
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Abstract
The paper considers various aspects of organization of search and rescue provision (SRP) for aircraft flights and space object evacuation. Currently available statistical data on quantitative and qualitative composition of forces and means used are given. These are obtained on the basis of the analysis of the results of operations performed. Ways of increasing the efficiency of search and rescue provision are substantiated.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):113-117
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Calculation of fuel distribution in combustion chamber nozzle module
1 1.
Abstract

The paper presents the results of calculation of flow and drop liquid fuel concentrations in the combustions chamber nozzle. The numerical model used takes into account two stages of fuel spraying. Significant influence of secondary spraying on the formation of drop liquid fuel concentrations is revealed. It is shown that the methods developed can be used to analyse the influence of constructional and mode parameters of mixing devices on fuel concentration distribution in them.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):118-124
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Parametric CFD designing of combustion chamber elements
1 1., 1 1., 1 1.
Abstract

The paper present a numerical and parametrical analysis of gas-turbine engine lines elements. The first part deals with the impact of the front device swirlers location and way of swirling on fuel-air mixing effectiveness in the lines. The second part offers a numerical analysis of the temperature pattern in the wake of secondary air jets and of mixing quality in the mixing area of the combustion chamber.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):125-132
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TECHNICAL SCIENCES
Peculiarities of setting up a problem of calculating processes fora general-purpose gas cylinder as anon-classical two-phase system and estimation of its temperature condition
1 1., 1 1.
Abstract

The paper describes the processes in a general-purpose gas cylinder different from cryogenic capacities with low pressure levels stored without draining in that heat isolation is inside the vessel. Existing approaches to solving the problem of process calculation for similar two-phase systems are analysed.The results of calculating cylinder temperature condition carried out using a simplified method are presented.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):133-137
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Investigating the process of shaping solid moulded parts according to the outward happing-moulding pattern
1 1., 1 1., 1 1.
Abstract

The paper considers techniques for producing parts like thin-walled conical casings of aircraft engines. Experimental procedure and that of processing experimental data are given as well as experimental data of producing a model of the part.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):138-145
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Mathematical modelling of pressure pulsations and noise of a manual mechanized pneumatic tool
1 1.
Abstract

A mathematical model for analyzing dynamic characteristics of a manual mechanized pneumatic tool is developed. The model makes it possible to assess the influence of various design parameters on the acoustic characteristics and the torque created by the tool in operation at the stage of designing.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):146-153
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Computational and experimental research of the thermal state of a perforated wall of a liner with inclined slots
1 1., 1 1., 1 1., 1 1., 1 1.
Abstract

The thermal state of a perforated wall with inclined slots for liners was determined experimentally by means of a thermovision system. Three-dimensional calculations of boundary layer aerodynamics on the wall with cooling air injection through discrete inclined slots were carried out on the basis of numerical integration of a three-dimensional system of Navier-Stokes equations. It is established that the cooler jest penetrate into a hot stream less intensively with fan air supply than with straight supply. Consequently, the wall is cooled more efficiently with fan air supply. Dependence of cooling efficiency on the angle of inclined slots was obtained.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):154-160
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Sequential perforation of tubular articles by elastic tools
1 1.
Abstract

The paper proposes a procedure for controlling the sequence of tubular articles by an elastics tool. An example of designing an elastic punch for sequential perforation of tubular filters is given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):161-166
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Physical foundations of gas dynamic method of controlling subsonic gas fetes
1 1., 1 1., 1 1., 1 1.
Abstract

Making new engineering devices requires a stage of theoretical grounding of the regularity of the claimed indicators being manifested. This stage is particularly important for aircraft engine devices and units as their reliability provides the safety of operating an air vehicle as a whole. The paper offers mathematical and physical grounding of a gas dynamic method of controlling subsonic gas jets based on the use of Coanda effect.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):167-175
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Investigating the mechanism of human eye accommodation on the basis of finite-element modelling
1 1., 1 1., 1 1., 1 1.
Abstract

The paper investigates the process of human eye crystalline lens accommodation in terms of mechanics on the basis of finite-element modeling. The results obtained suggest that the active forces of accommodation are the pressure difference between the front and back parts of the eye. A new hypothesis of accommodation mechanism principle is proposed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):176-186
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Solving the problem of statistical dynamics for the oil main
1 1., 1 1., 1 1.
Abstract

The paper presents the solution of the problem of statistical dynamics. This solution is one the key points in assessing the reliability of pipelines. Two numerical methods are compared: method of statistical testes and that of interpolation polynomials.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):187-193
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Mixinga carbonie acid fet with air flow
1 1.
Abstract

The paper analyses the influence of flow velocity ratios, initial turbulence degrees and configurations of carbonic acid gas jets propagating in the transverse air flow on the position of the shift aree front boundary.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):194-199
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Dielectric liquid meniscus charge on a high-voltage needle electrode
1 1., 1 1.
Abstract

The paper presents the calculation of electric field intensity and charge on the surface in the volume of dielectric liquid meniscus on a high-voltage needle electrode with regard to the influence of the surface charge on the resultant field.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):200-206
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Mathematical modeling of hydrodynamic processes in a pipeline partially filled with air
1 1., 1 1.
Abstract

The papers present the procedure of calculating hydrodynamic parameters for liquid column motion in a plastic pipeline partially filled with air and connected up to a tank with an air cavity over the liquid. The liquid starts moving at the moment the eiectropnevmatic gate is opened.End the motion depends on the pressure in the tank, pipeline parameters and the number of bends in the pipeline. Hydrodynamic parameters are calculated on the basis of solving non – linear integral and differential equations by the finite difference method. The results of calculation make it possible to define the liquid velocity, the forces of liquid reaction in pipeline bends and to analyse the influence of the factors affecting them.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):207-213
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Algorithm of calculating hydrodynamic parameters of a pipeline partially filled with air
1 1., 1 1.
Abstract

The paper presents a software algorithm watch enables calculating hydrodynamic parameters of a liquid in a plastic main pipeline partially filled with air and connected up to a tank with an air cavity over the liquid when the electro pneumatic gate is opened. The influence of cavity volume and pressure in the tank, the time of opening the gate, the degree f filling the main line with liquid, pipeline parameters and diaphragm dimensions on the speed of liquid column moving along the lines and reaction forces emerging in pipe bends is analysed. Recommendations are given how to reduce hydrodynamic loads on the pipelines.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):214-218
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CYBERNETICS AND INFORMATION SCIENCE
Assessing the speed of data transmission of a company’s external internet channel for providing the required quality of connection
1 1., 1 1.
Abstract

The paper proposes a mathematical model of a company’s Internet channel and a procedure for assessing its data transmission speed to provide the required quality of connection.
The method of utility function is used for selecting a particular Internet provider by the criteria of data transmission speed during one user session/given cost of connection.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):219-225
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Formalizashion of interpretations and activities of crew and expert
1 1., 1 1.
Abstract

We consider both the interpretation of airplane crew activity inside the suggested set of possible rational actions and creation from it’s the desired configurations.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):226-236
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Computer – aided control of instant date
1 1.
Abstract

The paper analysis a computerized information system for collecting, processing and analyzing instant data developed within the framework of a transport system. A data model is proposed, instruments for designed operative information database are described, algorithms of finding object concentration sports on a map are discussed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):237-245
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Phenomenological model of mastering educational material with regard to the factor of motivation
1 1., 1 1.
Abstract

The paper presents the results of the developed of a mathematical model of educational material mastering. The model is based on continuous monitoring of the development of student’s academic abilities and on the proper correction  the academic process by certain components of the process which were structured in advance. The model is a system of ordinary differential equations of the twelfth order written with reference to assimilation functions and the so – colled motivation constituents of educational information.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):246-258
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Statistical analysis of telecommunication system on the basis of studying information flows presented as time series
1 1.
Abstract

In an effort to analyse telecommunication systems statistically the author considers markov’s system model, net traffic simulation by fractal Brownial motion, simulation of time series. Time series models developed for the statistical system of telecommunication system’ monitoring are given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):259-264
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HUMANITIES
Linguocultural peculiarities of English language standard letters
1 1.
Abstract

Standard personal and business letters accepted in the English language culture are analyzed from the point of view of ritual and etiquette. Letters are classified according to such parameters as the basic values underlying them, the aims and the participants. Letters in Russian culture, their similarities and differences are shown.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):265-270
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Cluster organization of economy and efficient region management
1 1.
Abstract

The paper deals with the issues of managing a region as a megacluster.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):271-274
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Regional strategy and clusters
1 1., 1 1.
Abstract

The paper deals with the influence of clusters on the region development, the problems of strategic planning on the basis of cluster approach and their role as points of grows of internal market.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):275-280
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Potential of future engineer’s self – realization as a pedagogical problem
1 1.
Abstract

The paper deals with the topicality, structure and mechanism of forming the potential of future engineer’s self – realization.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):281-290
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Oscillatory model of control over military training center material and technical supply
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Abstract
This paper describes the solution for management of University military training center material and technical supply control by means of oscillatory model creation. This model is used during the training process simulation.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):291-293
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Competence model of a professionally mobile specialist in the area of engineering
1 1.
Abstract

The paper deals with the structure of professional mobility. A competence model of a professionally mobile specialist in the area of engineering is proposed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):294-303
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Complex analysis of the efficiency of a higher school teacher’s pedagogical activity
1 1., 1 1.
Abstract

The paper presents the results of empirical studies analyzing the efficiency of a higher school teacher’s pedagogical activity. Rating of teachers using different styles of pedagogical activity is given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):304-309
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Model of asystem of upgrading civil employees’skills
1 1.
Abstract

The paper analyses approaches to defining the notion of “educational process” and to developing a model of a system of upgrading civil employees’, its main components are defined. Programme – methodical component is chosen as the one that forms the system, it is developed with regard to the pedagogical conditions singled out.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):310-315
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Managing the competitiveness of non – commercial organizations in modern economic system
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Abstract
The paper proposes an economic and mathematical model of managing the competitiveness of Image, press – quality and graduates’ placing in jobs are chosen as the most important factors. Image management is illustrated by the example of educational services market.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):316-324
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Managing the development of non – commercial organizations on the basis of balanced interaction between the state and the entrepreneurship in the social area
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Abstract
The paper considers the concept of managing non– commercial organizations on the basis of interaction between the state and the entrepreneurship in economic systems of the social sphere.According to the model proposed balance or optimum is achieved in the event that aggregate volume of services provided by state social institutions together with the aggregate volume of services provided by the non – state non – commercial sector meet the social demands of the individual and the society.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):325-329
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Innovative methods of analyzing material and information flows of production
1 1.
Abstract

The paper deals with new approaches to analyzing the flows of material and spiritual production using the terminological chain «Object of nature- zero object of labour-primary object of labour-secondary object of labour-final product» in the context of ecological constituent.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):330-338
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Psychological and pedagogical factors and the efficiency of a higher school teacher’s pedagogical activity
1 1.
Abstract

The paper deals with psychological and pedagogical factors which affect the efficiency of higher school teacher’s pedagogical activity.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):339-343
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Natural lifts as a manifestation of an individual’s spiritual life
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Abstract
The paper defines natural gifts and considers the conditions that contribute to the conception and development of an individual’s spiritual life.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):344-345
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The structure of cultural and educational space of Russia
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Abstract
The paper proposes a structure of culture and educational space of the state separating three obligatory elements interconnected by hierarchical relations: national education, state and civilised education, wored or global education. The three – level model of cultural and educational space makes it possible to define more clearly and to give concrete expression to the goals of education, the forms and methods of the modern educational system in Russia.
VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2006;5(1):346-349
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