Vol 10, No 3-4 (2011): Special Issue

Full Issue

AIRCRAFT AND SPACE ROCKET ENGINEERING
Harmonic model of thermodynamic cycle in thermoacoustic engine regenerator
Zynovyev E.A., Dovgyallo A.I., Vorotnikov G.V.
Abstract

The harmonic model of thermodynamic cycle in regenerator which is a key to analyze the thermodynamic processes of gas oscillating has been established in this paper. It is shown that each parcel of gas in the regenerator undergoes thermodynamic cycle which depends on phase shift between pressure and displacement oscillations of gas.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):11-15
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Thread production accuracy impact on forces distribution in thread and full-strength thread
Kurushin M.I., Kurushin A.M., Suslin A.V.
Abstract

Not only difference of deformation of bolt rod (tension) and nut (compression) but non-uniform in height radial extension of nut and compression of thread part of the rod, nut body twisting in radial plane and above all irregular pitch due to production irregular has an impact on force distribution in thread. It should not strive for a precise production of thread with uniform pitch but on the contrary, due to control irregular thread pitch full-strength of thread can be reach. Our numerical investigation shows, that using of control irregular thread pitch can decrease maximal stresses by 50% in comparison with precisely produced thread.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):16-20
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Preliminary study of principles of effective efficiency change of turboshaft engines of various schemes with heat recovery and intermediate cooling of working medium
Sokolov M.A., Kuzmichev V.S., Kulagin V.V., Krupenich I.N., Tkachenko A.Y.
Abstract

Preliminary study of heat recovery and intermediate cooling of working medium effect over the turboshaft engine effective efficiency is carried out.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):21-29
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Theory representations mathematical models and sequences of performance of technological operators of assemblage of planes
Grechnikov F.V., Tlustenko S.F.
Abstract

Mechanical communications between collected elements of a design of the flying machine are modelled according to the scheme of spatial interrelation of assembly units of a design and initial, boundary conditions. The description of character of movement of an element of a product at assemblage is represented at quantitative level of a trajectory matrixes of conditions agrees the general count of assemblage of a product. Trajectories of movings are described by methods of analytical geometry and matrixes of movings, and also the operators, describing movement as vector size.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):30-37
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Design build process for the accuracy of eligibility
Grechnikov F.V., Tlustenko S.F.
Abstract

Research of assembly operations on some set of admissible variants of execution in article is investigated in the form of statement of a problem of a choice of optimum model and structure systems of assemblage of the unit with an establishment of admissible parameters of transformations of technological transitions.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):38-43
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Influence of notch radius at advancing surface plastic deforming on endurance limit of detail
Vakuljuk V.S., Kirpichyev V.A., Pavlov V.F., Chirkov A.V.
Abstract

It is experimentally established that with notch size increase at advancing surface plastic forming, the increment of an endurance limit in connection with reduction of compressing residual stresses in the minimal section of detail decreases.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):44-50
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The determination of the thermoacoustic generator aspect from electrodynamic unit features by the parametric-studies
Vorotnikov G.V., Kruchkov A.N., Zynovyev E.A.
Abstract

Thermoacoustic generator, consisting of a thermoacoustic travelling-wave engine and linear alternator 1S102MA, is being considered. Parametric analysis is carried out by method electroacoustic analogy for the design optimization. Authors received different device-performance dependencies for analysis of apparatus behavior.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):51-58
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Method for determining the energy of jets vibration waves
Limanova N.I., Levkin Y.S.
Abstract

In this paper we consider the physical processes occurring in the liquid phase of two-phase flow under vibration load on the structure of the liquid phase as an example of white particles suspended in a traveling wave with a different percentage of its reflection. The amplitude of this wave is 4% of its length and depth of water is equal to 22% of the wavelength [1]. Given the proliferation of vibration waves in the form of concentric spheres, and the identity of the impulsive nature of vibrations, the author offers a method of determining the internal energy state of the wave of the liquid phase.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):59-64
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Fan engine research
Murzagaliev A.G., Nekrasov V.G.
Abstract

The analysis of development of rotational engines has done. In our time among rotational engines rotor-piston engines, blade turbines and fan engines are known. In this article is shown that in the field of autotractor engines any of these types of rotational engines cannot be alternative to piston engines existing today. High technical and economic indicators can be received on the rotational engine of volume type of deep expansion. Such design is realised on the basis of conic fan elements. The broad machine of deep expansion ideas expressed but not realised in an industrial version of the engine. In this work it is proved a principle of blading of a fan surface on a conical rotor. The manufacturing technology is developed and the model of a rotor full-scale is executed from plastic.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):59-64
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Aspects of the numerical method calculating thermogazodynamic lrest based on not perfect passing of workflows in the combustion chamber
Silyutin M.V., Shustov S.A.
Abstract

Are stated results of using methodic of numerical thermogasdynamic calculating of rocket engine of small thrust (LREST) with account of not the ideal course of workflows in the combustion chamber.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):71-77
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Preliminary tests of tank with cryogenic charging for onboard throttle system of cooling
Dovgjallo A.I., Sarmin D.V., Uglanov D.A.
Abstract

This article deals with first results of tests of a tank with cryogenic charging (liquid nitrogen), which have been made at level of pressure to 4 MPa. Also it is shown that the behavior of parameters in a tank on time corresponds to calculation model.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):78-84
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Protection devices for improving passive safety of automobiles
Eskin I.D., Alkeev R.I., Suslikov V.I.
Abstract

We have developed protection devices certified by patents [1], [2], [3], [4] of the Russian Federation, for sideway protection of an automobile: front, rear and on both sides in an accident crash. Compared with known devices [5], [6], [7], the suggested protection devices can be installed into all home-produced and foreign automobiles. The devices possess high dissipative ability at damping frontal and lateral crash impact. Provided that the automobile has good contact performances, these protection devices are able to dissipate approximately 80-100% of kinetic energy of a frontal impact in a front crash-test of a 130-150kg automobile.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):85-92
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Pressure measurements in the pipelines with the help of combined high temperature pressure sensor
Limanova N.I., Yudin P.E., Limanov I.A.
Abstract

The pipelines of engines are exposed to different variable forces influence. During the engine tests the working processes control is conducted. Among others such control requires different pressure measurements. The most of the processes are accompanied by the working environment temperatures rise, which may be highly essential. Contemporary means of pressure measurements, which are used in automatic systems for the engine tests control are intended for work in temperature range up to 80ºС. Unlike known the suggested high temperature pressure sensor ensures precision of measurements at the expense of compensation of errors, which appear during pressures definition at high environment temperature. The sensor permits to widen of temperature range up to 400ºС. For that the additional measurements error doesn’t exceed 0,5%.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):93-96
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Test bench for investigation of thrusters intra-chamber working processes
Pervyshin A.N., Ryazanov A.I.
Abstract

Experimental investigations have governing importance during the creation and development of thrusters and other gas generators of similar working process for ground application. All modern innovation equipment used for design and development, including test equipment, must satisfy strong requirements.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):97-102
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Working process of gaseous fuel metallizator
Pervyshin A.N., Ryazanov A.I.
Abstract

Propane-air wire metallizator is developed on the basis of thruster. working process modifications required for metal evaporation are examined.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):103-109
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Kinetic diagram of slow fatigue crack growth. Crack growth
Khibniсk T.A., Koltsoun Y.I.
Abstract

Based on macro structural analysis of a typical fatigue fracture of a cylindrical specimen of steel 45 with an annular semi-circular notch in bending the technique of constructing the kinetic diagram of slow growth of fatigue cracks in the light of the third coordinate - the number of cycles. Shows the quantification of growth up cracks in the projection plane: of quantity of cycles - the speed of the crack.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):110-116
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Technique of conclusion the direct-flow detonation pulsing engine design to the leader position
Safronov V.V., Porshnev V.A., Zhebrakov A.S.
Abstract

Statement of a hypervector problem of conclusion the direct-flow detonation pulsing engine design to the leader is considered. Generally it is reduced to multicriteria problem of a discrete programming. The method of its decision is offered. The numerical example is resulted.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):117-126
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Composition of the laws of distribution of the vector errors, wich act with the working on the machine tools with the numerical control by program
Ismaylova E.Y.
Abstract

The examined laws of distribution of a vector, which expresses the sum of the manufacturing errors under processing on the machine tools with the numerical control by program.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):127-131
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Enhancement of efficiency of casting processes in production of parts of aircraft engines by way of action of pulse-magnetic field on melt
Chernikov D.G., Glouschenkov V.A., Igolkin A.J.
Abstract

The results of theoretical and experimental investigations of the influence of the high-intensity pulse-magnetic field on the structure and properties of aluminum- silicon alloys are presented in this paper. Based on the results of the investigations the sequence of designing of technological processes of casting with pulse-magnetic processing of the melt in production of aircraft engine parts has been suggested and sampled industrially

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):132-140
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Enhancement of efficiency of casting processes in production of parts of aircraft engines by way of action of pulse-magnetic field on melt
Chernikov D.G., Glouschenkov V.A., Igolkin A.J.
Abstract

The results of theoretical and experimental investigations of the influence of the high-intensity pulse-magnetic field on the structure and properties of aluminum- silicon alloys are presented in this paper. Based on the results of the investigations the sequence of designing of technological processes of casting with pulse-magnetic processing of the melt in production of aircraft engine parts has been suggested and sampled industrially

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):132-140
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Investigation of an annular damper, made of material MR in the case of simultaneous load in axial and radial directions
Ulanov A.M., Shvetsov A.V., Parovay F.V.
Abstract

Material MR is widely used in systems to protect against vibration. Investigated the loading of the MR damper in the radial direction rotating force that occurs when a precessing motion of the pipe or as a result of an imbalance of the shaft and at the same time in the axial direction.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):141-145
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Gas turbine engine rotor bearings electrical current damage on the base of NK-family engines for electrical generator drive
Nazdrachev S.V.
Abstract

Electrical current damage is a problem known for a long time. But until now we have never met this problem in our gas turbine engines. The article deals with our experience in diagnostic of this event and solution of bearing protection problem and measures of dielecrtric resistance increase by means of bearing ceramic coating and the use of hybrid bearings.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):146-150
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Modeling of dynamics of system with relaxation hysteretic damping
Shakirov F.M.
Abstract

The paper describes a hysteretic relaxation damping model and results of the study on its basis of dynamics of system.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):151-157
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Free vibration of relaxational and viscous-damped system
Shakirov F.M.
Abstract

The paper describes a viscous relaxation damping model and results of the study on its basis of free vibration of system.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):158-161
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Forces distribution in thread and external altering load factor in thread joint under structures vibration
Kurushin M.I., Kurushin A.M., Barmanov I.S.
Abstract

According to teaching literature sources and in an engineering practice there is the rule to use the same type distribution of variable dynamic load in thread as the static one for thread strength calculation under variable acting load. Performed numerical investigation shows that it is not quite right and distribution of the dynamic load in thread can be different from the static distribution depends on thread joint elements stiffness and elastic and inertial properties of whole structure as well. External variable load factor and load distribution in thread in structures with thread joints have to be defined taking into account whole structure dynamic properties. In order to increase endurance strength of thread joints subjected to vibration it is necessary to tune off a design from any resonances.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):162-171
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Application CAD/CAE-systems for calculation on durability of details crank rod mechanism of internal combustion engine
Gorshkalev A.A., Krivtsov A.V., Saigakov E.A., Smorkalov D.V.
Abstract

In the given work calculation crank rod mechanism of a four-cycle six-cylinder internal combustion engine of Mercedes-Benz M-115 has been carried out durability with application CAD/CAE – systems. Calculation was spent at stationary statement of a problem and the account of distribution of temperature on piston height.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):172-176
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Experienceof CAE/CAD-systems using at designing of internal combustion engine
Gorshkalev A.A., Krivtsov A.V., Saigakov E.A., Smorkalov D.V., Uglanov D.A.
Abstract

This article deals with designing processor of internal combustion engine by CAD/CAE-system. Thermal calculation of the processes proceeding in given power installation is carried out. On real details it has been created 3D prototype model in program complexes Solid Works and the COMPASS. Further models have been exported to programs ADAMS for kinematic and dynamic calculation, ANSYS mechanical – durability of calculation, and gas dynamic calculation in ANSYS Fluent. Also the given technique allows to execute designing of pressurization and system of cooling of the engine. Using of all this programs allows to project ICE with very good.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):177-181
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Increase of chrome-nickel steel 40ХН fatigue failure resistance by laser influence
Tregub V.I., Nikiforov A.M.
Abstract

Properties of used constructional materials mainly define increasing of aviation product’s operational indicators. Fatigue failure resistance of metal materials, as well as other physicomechanical properties, substantially depends on structure. Laser heat treatment of details from steel 40ХН allows raise fatigue failure resistance at microhardness increasing of a blanket in thermal influence zone in 2…2,5 times. It’s possible to get lower probability of fatigue cracks origin while in service.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):182-186
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Modeling non-through surface cracks in the thin-walled structures
Skvortsov Y.V., Glushkov S.V.
Abstract

Describes the program developed macros for the automatic modeling of the FEM-package ANSYS threedimensional surface cracks in thin-walled structures and calculate the parameters of fracture mechanics along the curved semi-elliptical crack front. In order to determine the values of J-integral method of integrating the region. We give a numerical example of modeling the outer surface cracks in the pipe and the results of calculating the parameters of fracture mechanics.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):187-191
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Mistakes analysis of multicoordinate processing on the machine tools with the numerical control by program
Ismaylova E.Y.
Abstract

The examined factors, which influence on the numerical value, position in space and character of distribution of a closing vector of a dimensional chain which expresses the sum of the production errors, existing when multicoordinate processing on machine tools with the numerical control by program.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):192-198
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Modernization of serial automobile engines
Aleksencev E.I., Birjuk V.V., Nekljudov A.A., Denisov A.A.
Abstract

Modernization of serial engines of Open Society "Autovases" for increase of overall performance at the expense of working out of some the progressive means which realization will allow to raise technical characteristics.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):199-206
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Issues of evolution of rotor piston engines’ subject abroad and in Russia
Kocherov E.P., Kononov V.A., Okorochkov V.V., Okorochkova V.M., Ivanova K.P.
Abstract

The development of small and unmanned aircraft in Russia is hampered by the lack of production of domestic aircraft engines in the power range up to 300 h.p. The main requirement for the aircraft engine is minimal ratio of mass and overall dimensions to output. In a greater degree that is matched by the engines of rotor piston layout. The intensive work on rotor piston engines is carried out abroad by companies of many countries: Britain (UAV), USA (Freedom Motors), Austria (Austro engine) etc. In Russia, at JSC SKBM the works on rotor piston engines were conducted for outboard motor application in cooperation with Rotor Piston Engines Design Bureau of AVTOVAZ. For the satisfaction of needs for small and unmanned aircraft a project of creation of rotor piston engines in the power range of 8-160 h.p. was developed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):207-214
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Research of the workability of special materials electroerosive method
Koshelev V.V., Smirnov G.V.
Abstract

Productivity of processing of aviation nickel alloys is investigated by EDM. Processing was conducted by copper and graphite electrodes, an insertion method. Dependences of productivity on frequency of impulses are received.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):215-218
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Exponential smoothing parameter time series in the presence of trend
Kerensky A.M.
Abstract

Algorithm of exponential smoothening of a time row having an arbitrary trend. This algorithm can be used at control of a technical process in real time conditions.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):219-223
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Efficiency of technical workings out in batch production GTE
Aleksentsev E.I., Shitarev I.L., Kurbatov V.P., Gritsenko E.A.
Abstract

Complex scientific and technical requirements to the organization of a batch production of engines and the conditions predetermining necessity of working out of new technological processes of manufacturing are defined. Efficiency of new processes is shown. Realization of a complex of progressive processes of manufacturing of details and knots has allowed to receive essential increase of technical characteristics engines families "NK", their high operational reliability and resource.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):224-233
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Modernization of test-bench for small turbine-drives investigation
Matveev V.N., Shabliy L.S.
Abstract

Construction and operating principle of test-bench for automate investigation of small turbine drives are described in paper. Methodologies of test operation, analysis of automate measurements and error estimate is given.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):234-243
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Application of contactless measuring complex «ARAMIS» in experimental tasks
Lezhin D.S., Parovay F.V., Sobul A.V.
Abstract

Two high-speed cameras capture movement and deformation of an object which allows to compute surface stress and strain.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):244-253
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Development of numerical models of working process in fuel auger-centrifugal pump
Gafurov S.A., Miheev M.G., Rodionov L.V., Kruchkov A.N., Shahmatov E.V.
Abstract

The issues compiling numerical computational model based on the method of finite volumes are discussed in this paper. This model is used to measure axial force acting on the rotor of auger-centrifugal stage of combined fuel pump. Model verified by comparing the calculated and experimental characteristics of the discharge. The paper discusses the impact of some design parameters auger-centrifugal stage on the value of the axial force.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):254-263
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Automated system for measuring geometric parameters of turbine blades in production conditions
Aleksentsev E.I., Shavrin P.A., Fedoseev O.B.
Abstract

The problem of developing the automated system for measuring the geometry of blades for gas turbine engines (GTE) in production conditions is considered. The starting point of the study was the technological continuity requirement being implemented equipment. In the theoretical analysis, supported by the results of simulation and experimental studies the best configuration of automated systems is justified in the context of the main problem - upgrading the POMKL by replacing the optical-mechanical system with high-speed measurement system with differential sensors, integrated into real-time computing environment. The paper presents efficient control and identification algorithms for differential sensors that form the basis of multi-channel high-speed measuring system, the curvature correction algorithms and analytical description of the blades, description of hardware and software to support computing in real time. In this case the expected rate "performance/price" may reach 150-500 units per hour/1000 $ for non-comparable with optical systems, reliability and simplicity of equipment.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):264-272
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Experimental research of staff LTRE with hypergolic propellant under impulse engaging conditions
Shustov S.A.
Abstract

The results of the experimental research of dynamic characteristics of staff LTRE with thrust from 10 N to 130 N with hypergolic propellant under impulse engaging conditions are described. The formation specific of front and behind impulse connected with explosive character of working procedure during 1 ms is defined. The influence of the LTRE volume upon the basic dynamic parameters is analyzed.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):273-278
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Experimental research of thermal yet influence of staff LTRE upon the construction models of airspace devices
Shustov S.A.
Abstract

The methods and results of experimental research of thermal yet influence of staff LTRE with thrust from 10 N to 100 N with hypergolic propellant under continuous and impulse engaging conditions are expounded. The influence of basic thermo gas and dynamic factors on the thermal influence dimension in the near and far yet part relative to the nozzle cut is described.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):279-283
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Some questions of designing and manufacture of wire material hub dampfers
Lazutkin G.V., Parovay F.V., Troynikov A.A.
Abstract

The basic questions of manufacture of hubs from МR are considered. The method of calculation dynamic and necessary elastic-hysteresis characteristics of hub dampfers is offered. The basic approaches to an estimation of technological stability of manufacture processes and dampfer tests are generated.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):284-290
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Calculation of basic parameters of spring unloading and shock-proof devices of all-metal multicomponent dampfers on material МR basis
Lazutkin G.V., Parovay F.V., Petukhova M.A., Troynikov A.A.
Abstract

Basic principles of designing and questions of engineering of spring unloading and shock-proof devices of allmetal multicomponent dampfers on material МR basis are considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):291-297
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Design and technological solutions for provision of high reliability and life time of aviation gas turbine engine disks
Nozhnitskiy Y.A., Karimbaev K.D., Potapov S.D.
Abstract

Certification requirements for aviation gas turbine disks; design and technological solutions for provision of disks high reliability and life time; methods of disks confirmation compliance to requirements are considered.

VESTNIK of Samara University. Aerospace and Mechanical Engineering. 2011;10(3-4):298-304
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