Vol 10, No 3-2 (2011): Special Issue

Problems of serial plants leading to repair as the main type of activities are investigated. Organization of production allowing cutting repair spending is presented. New types of repair are listed. A conception of repair and modernization at engine operability recovery centers is formulated.

An analytical review of the scientific publications of recent years on how to obtain nanocarbon materials. Shows perceptiveness method synthesis chemical deposition from metal-organic chemical vapor deposition for filter materials based on multiwall carbon nanotub for cleaning liquid and gaseous environments

This work substantiates the appropriateness of micro-arc oxidation technology usage for hardening of silumin with a silicon content of 6 ... 11% in the manufacture of major body parts of engines, and also the titanium alloy VT1. Results of preliminary research experiments, and study the main factors affecting the quality of the coating were described.

Results of a dynamic condition experimental research of the modern three-stage blisk fan designs, designed on new calculated technologies are resulted. Features of rotor blades fluctuations are revealed at research of a flutter in stalling area. As a result of the carried out experimental research the conclusion that there are two kinds of a subsonic cascade flutter is made: without-stalling flutter to which there corresponds the wave of deformation running on rotation and a stalling flutter at which the wave of deformation runs against rotation.

The article generalizes experience of automatic regulation systems design and development for aircraft and industrial gas turbine engines, operating with liquid hydrogen (NK-88 engine in TU-155 aircraft) or liquid natural gas (NK-89 engine in TU-155 aircraft, NK-361 engine in gas-turbine locomotive GT1-001).

The article provides determinative and sub-priority criteria considered for solution of a multicriterion problem of the efficiency evaluation which characterizes implementation of a number of priority functions by the fuel flow automatic control system. These functions define switching of the automatic fuel flow in the fuel lines of the aircraft engines as well as possible fuel drain to the object drain system and its transverse centering. Presentation of the efficiency function as a function of two variables, which characterize the effect of the use of the control system regarding the determinative and one of the sub-priority indicators, permits to use a method of the stepwise evaluation of the efficiency.

The article considers a possibility of application of the versatile gas generator in designing of the gas turbine engine. Limitations of the use in the mathematical model, criteria of optimization, power range have been defined. Parameters of the optimal gas generator developed on the basis of the VK-800 have been defined. A possibility of development of the 6000-hp engine with the use of the gas generator of the VK-2500 serial engine has been considered.

This paper presents the research of possible three numerical simulation technique applications in designed calculations of 10…15 N thruster swirl atomizer. Comparison results are given.

This paper describes an electropneumatic valve (EPV) structure for gaseous oxygen with 49 MPa working pressure and defines problems which are necessary to be solved in order to provide EPV working capacity.

There are presented the results of the numerical modeling hydrogen combustion in oxidizing environment of the premixed steam-oxygen mixture in operating conditions of the promising combustion chambers that can be used as high-temperature steam’s generators for combined cycle power plants. It is defined a geometry of the mixing module, flame stabilizer and primary combustion zone that provides high mixing quality and absence of local zones of overheating construction’s elements of the combustion chamber.

In the article the method of diesel locomotive efficiency upgrading by the process of electrical fuel manufacturing ispresented. An expression capable for evaluating the increase of proportion of active centers in the fuel after manufacturing by an electric discharge was obtained. A model of fuel diffusion combustion after manufacturing was developed. Processing and burning diesel fuel experiments are presented. Simulating of the work process of a diesel locomotive 10Д100’ diesel engine by using of electrothermal processing of fuel is conducted. The results received in work connect parameters of fuel manufacturing with diesel engine indicators. This allows providing feedback and more effective usage of fuel manufacturing in locomotive power stations.

In the results of research structure, physico-mechanical properties and heat-resistance characteristics of combined heat-resistant coatings NiCrCoAlY/ZrO₂ obtained by gas evaporation method using plasma torch Coverage introduced improved design, consisting of repair or replacement work and technology extension resource guide vanes of turbine power plants.

Using microfractographic observations the mechanisms of low cycle fatigue crack kinetics in aero engine disks under operating conditions have been established. On this basis the techniques for disc residual life estimation have been developed. The techniques have been verified with the data of crack growth microfractographic reconstitution and crack kinetics direct observation on a disk surface.

The describes the experimental installation for studying long-term strength of unidirectional polymer composites materialov. Used as a model sample mikroplastics is loaded using chart changes in forces and displacements are recorded hydraulic cylinders to its destruction, the info light-sensitive tape recording. Experiments are repeated at different speeds of displacement of rod hydraulic cylinder. The dependence of the tensile strength of the samples from the rate of load application is estimated.

Ensuring reliable and safe flight operation of the aircraft engines is actually attained by the developers, manufacturers and operators at all stages of the engine life cycle. This necessitates the analysis of the engine configuration, which is formed while making up engine sets and assembling using a specific for the moment design of parts or components, which were manufactured, subjected to inspection and tests under the specific manufacturing conditions. The results of such analysis in connection with the results and conditions of operation form the engine airworthiness management system. Such a system implies methodology, which provides for account of all normative requirements beginning with the design stage and their further execution control at stages of development, serial production and operation. One of the main aspects of the system is definition of parts, components and assembly units and further classification thereof depending on the extent of their impact on flight safety.

There was shown offered method’s of linear interpolation propfan’s multidimensional characteristic results using for modeling turboprofan jet in a total range of flight conditions and approach to equivalent specific fuel consumption optimization subsystem construction in automatic control system structure for reduction of environmental tests and maintenance costs. The offered methods considers requirements to mathematical models for the seminatural modeling stand - simplicity, ensuring of sufficient accuracy of result, work and functioning engine’s mathematical model in a mode of real time.

Jet engines are the basic type of engines in a civil and military aviation, used as main and forcings energy plant is in shipbuilding, energy, gas industry. A major requirement to the engines is high operating reliability. The design of processes of erosion by modern numerical complexes give new benefits for prognostication of the impermissible states of JE in exploitation, to apply on the stage of planning necessary and sufficient methods to protect engine details from erosion.

The requirements shown to газотурбинным to engines of land application and a problem which arise at use as fuel of passing gases and топлив, coals received by gasification are analysed. It is shown that a vital issue at use of passing gases is possibility of formation of a condensate of hydrocarbonic gases at increase of pressure of air behind the compressor and in channels of giving of fuel. Creation of systems of use of alternative kinds of fuel by association of means and other resources of the enterprises of customers of such systems and the enterprises of manufacturers land GTE can be a comprehensible variant of the decision of such problem.

The methodology of the optimization of the interlock blade-disk of the type “fir tree” is examined within the bounds of this paper. The methodology is based on the method of the complex experiment. Agodjino criterion of the stress-state rigidity and the plasto-elastic deformation energy of the material are used as the optimization criteria.

In the article the basic design of patented plants to implement the process of hardening the thermoplastic (TPU) blades of gas turbine engines and gas compressor units.

The volumetric efficiency process of engine cylinders with self-closing inlet valve was studied. The relations of engine cylinder volumetric efficiency from engine speeds for various variants and closing times of self-closing inlet valve are established. The possibilities of increasing engine performance are shown.

Drawing subjects improvement possibilities for the training of the innovation machinery construction specialists are considered. The model of the multi-level drawing and geometric training system is worked out and realized at «Aircraft engines» faculty of Samara State Aerospace University. The results of the pedagogical experimental research are produced.

In article are discussed the problems of training to designing of mechanical engineering products. Systems and methods of computer aided design which are used in the school of mechanical engineering of the Samara technical university (SSTU) are analyzed. Experience of creation the CAD/CAM/PLM/-center are described.

The article discusses the implementation of modern methods of training qualified specialists for the aircraft engine based on the through the use of CAD / CAM / CAE systems. In particular, sets out the stages of a geometric graphstudent training, engineering and technological design of aircraft engine parts

The article gives the results of working out the mathematical model of mastering the educational material based on continuous monitoring of developments of learning abilities of students and corresponding adjustment of process of education by definite, structured in advance its component parts. The model of mastering presents the system of ordinary differential equations of the twelfth noted concerning functions of mastering and so called motivational components of educational information.

The article is devoted to modular-rating educational system while “energy-saving in heat-power engineering and technology” course teaching for IV year students of Heat Power Department.

In the article is devoted to the professional orientation of mathematics teaching in the preparation of engineers. This approach is implemented in the educational-methodical manual on linear algebra. Approbation of this handbook was successfully held at the Samara state technical university and Samara state university of means of communication.

In the article it is considered the organization of product life cycle management in university education. Оrganization structure, composition and methods of use of common information sphere given product for making is described. An area of process-oriented and object-oriented systems use is determined.