Vol 8, No 3-3 (2009): Special Issue

An ice protection system for gas pumping unit Neva-25NK with NK-36ST engine is developed. The results of full-scale test are presented providing validation of the required parameters.

Production of billets by casting processes allows controlling the composition and the structure of the billets’ material at the expense of the modification of casting processes, temperature regimes, mechanical, magnetic, acoustic impacts on the flux and others. Metal’s characteristics depending on the inner structure and crystallization conditions of the flux have been investigated.

Within the limits of the National project «Education» and innovative educational program in 2006 at the Samara state space university of a name of academician S.P. Korolev at faculty « Engines of flying devices » under direction of the academician of the Russian Academy of Science professor Shorin Vladimir Pavlovich have been created the Centre of science-educational of laser systems and technologies. The centre of science-educational is created on educational and pedagogical base of a speciality 200202 «Laser systems in rocket technics and astronautics» at faculty of automatic systems of power installations.

This paper shows the advantages of Laser vibrating diagnostic method for ungluing joints detecting in sandwich large-sized shells. The defects presents is detected by extended reflected laser spot form. The error of the method is increased significantly with reducing of laser beam distanсe, shall external layer vibrating amplitude and CCD resolution.

Present main result of research methods and techniques intensification rinsing of hydro-fuel units bodies and hydro-cylinders by oscillations’ flow. Rinsing Schematics with single- channel fluid generator and box of boundary conditions. The decreasing of rinsing duration 2-3fold and increasing of removed particles 1.5-2fold as compared with steady-state rinsing.

Today most of gas turbine engines have a guide vane system in the compressor. Developing estimation approaches of its influence on compressor characteristic line is very important because it defines operation stability of compressor and whole gas turbine engine. So theoretical calculation approach of gas turbine engines compressor characteristic line help to save time and efforts performing experiments.

The results of development of the low thrust rocket engines with fuel compositions oxygen/kerosene, oxygen/ethanol, oxygen/hydrogen, oxygen/methane are presented.

There is an area of applications of turbomachines where use of gas-lubricated bearings is economically expedient at rather heavy rotors. It is a question of turbogenerators capacity of 500 - 2000 kw with high-frequency electrogenerators. In article results of designing and experimental researches of gas bearings of a turbogenerator by capacity of 1000 kw are presented.

Frictional pendulum bearings (FPB) have the universal properties satisfying various requirements at operation of buildings, bridges and industrial constructions. The dynamic periods of oscillations from 1 up to 5 s, displacement up to 1,5 m, high bearing capacity and damping can be provided. Bearings can maintain vertical loading up to 13,5 thousand tons and have the minimal cost of a structure. In the paper the information on influence of earthquakes and other forces influenced on FPB characteristics, used as seysmo-insulators in oil platforms of the project "Sakhalin - 2" are represented.

In article results of experimental researches and theoretical calculations of slippage of a separator in the cylindrical roller bearing between shafts of the gas turbine engine are presented.

In work is described experimental acknowledgement of adequacy of the developed mathematical model of instant giving of the liquid.

The description of calculation of durability of working section of progressive divider valve is resulted at various speeds of moving of the dosing out piston. Calculation includes: preparation of solid-state 3D-models of details; creation of settlement model; formation of is final-element model; the analysis of results of modelling. Work is executed with use of program complex ADAMS of firm Mechanical Dynamics, Inc.

The results of laboratory investigation and real operation are presented on a high-speed two-stage electropump (EP) of increased service life. In the EP developed design the bearing’s balls are pressed against the cage surface of the thrust bearing, the radial movement of the rotor is decreased by use of slot seals with anti-friction rings, the length of electric motor’s shaft overhang is reduced, the shaft rigidity is increased owing to position of the second stage’s impeller on a hub of the first stage’s impeller. The EP service life in real operational conditions exceeds 22900 hours.

Results of this work are the analysis of geometry, experimental and design data for working blades of the compressor of engine NK-12, comparative fatigue tests. The methodology of design-experimental works on forecasting and check of reliability of blades with damages is offered specified concerning requirements of OST.

Features of application of aluminum casting composite on the basis of “Al-BN” system have been considered in this work. As a result of the studies practical recommendations on its application in aviation engine designs of Klimov JSC have been provided.

New nickel and blade materials for parts of advanced gas turbine engines have been considered in this work. It has been shown that disc materials with increased strength properties and blade sparingly doped alloys with small specific weight meet requirements regarding the service life and reliability of advanced aviation engines.

The methodological problems of the study environment design for the many-level graphic and geometric training system are considered. Presented that work with electronic model is an effective means for forming of the design-technological thinking of the CAD/CAM programs users. The necessary conditions for adaptive function ensuring of the study environment are explored. The proposed approaches are used at «Aircraft engines» faculty of Samara state aerospace university (SSAU).

The main problems of adaptation of the first-year students, concerning its definition and versions, problems, factors and estimation of level of adaptability under conditions of innovative high school by the example of geometric graph-training using computer technology are analyzed.