МИТ № 2 2012

IMPROVEMENT OF THE MASTS EFFECTIVENESS BY USE OF THE DIFFERENTIAL HYDRAULIC DRIVE

Bogdanov A. S.
JSC «Saint-Petersburg marine de-sign bureau Malachite»
tel.: (812) 378-65-81;
e-mail: malach@mail.rcom.ru
The conception of masts effectiveness improvement by use of the differential hydraulic drive with new complex of features is viewed. These features allow to realize the multiple lift and lower of instrumented stage in case of the telescoped sail in periscope depth..
Key words hydraulic drive, masts, nonpenetrating masts, radar signature, submarine.

PRINCIPLES OF MODELLING ASSOCIATIVE SEA TRANSPORT SYSTEMS ON THE BASIS OF CODE METHODS OF MANAGEMENT

Borisova L. Ph.
Murmansk state technical university

e-mail: lfborisova@mail.ru
Opportunities of increase of safety of navigation with the help of use of territorially located mobile control systems of movement of courts (МСУДС) and principles of modelling of the information infrastructures providing functional association of various sea transport systems in uniform association are considered. The information infrastructure uses the code methods of management sold on base графов of code crossings.
Key words: sea transport system, safety of navigation, a control system of movement of courts, columns of code crossings, convergence of systems.

COMPLEXITIES OF A CHOICE BETWEEN AUV AND UNDERWATER TOWED SYSTEMS FOR UNDERWATER TECHNICAL WORKS

Zekov A. A., Joint stock company «CENTRAL MARINE DESIGN BUREAU «ALMAZ»
tel.: 812) 369-59-25;
e-mail: office@almaz-kb.sp.ru
This article provides an overview of underwater technical works that can perform autonomous unmanned underwater vehicles (AUVs) and unmanned under-water towing system. The most likely composition of equipment has been listed, and also have been discussed the advantages and disadvantages of having a tow-rope cables.
Key words: autonomous unmanned underwater vehicle, AUV, unmanned underwater towing system.

ARTIFICIAL CAVERN USAGE FOR HYDRODYNAMIC DRAG DECREASING IS ONE OF THE UPCOMING TREND TO PROVIDE BOATS COMPETIVENESS AT THE WORLD WEAPONS MARKET

Platonov S. V.
ALEXEEV`S CENTRAL HYDROFOIL DESING BUREAU, JSC
e-mail: Alekseev@ckbspk.ru
tel.: (831) 273-10-37
The problems of boats hydrodynamic drag decreasing by artificial bottom cavern usage are shown. High-speed boats development trends analysis and its comparison with foreign and home-produced analogues have been completed. The demands of high-speed boats at the world weapons market are determined. The technical and economic performances of the high-speed boats with artificial cavern provide them competitive advantage at the world weapons market.
Key words: artificial cavern, boat, hydrodynamic drag, weapons market.

THE DETERMINATION OF THE SECOND ORDER NONLINEAR FORCES ACTING ON THE  CYLINDERS, PERFORMING TRANSVERSE OSCILLATIONS IN THE CALM, SHALLOW WATER

Semenova V. Yu., Soe Kyaw Thu
State Marine Technical University of St. Petersburg

tel.: (812) 682-17-46
e-mail: sem_viktoria @mail.ru
This article examines the two-dimensional nonlinear potential problem about transverse motions of the cylinder in finite-depth water. Nonlinear forces are determined through the second order. Employed procedure satisfies the nonlinear conditions on the free surface and on the body. The investigation of the influence of the alteration of water-depht on the nonlinear forces, acting on different cylinders with arbitrary cross-section shape is considered.
Key words: perturbation theory,shallow water, Green function, nonlinear second-order forces, cylinders.

THE INTELLECTUAL MOTION CONTROL SYSTEM OF THE UNDERWATER ROBOT OF A SOFTWARE TO VIDEODATAS

Siek Y. L., Sakovich S. Y.
State Marine Technical University of St. Petersburg

e-mail: siek@mail.ru;
e-mail: sergeySakovich@mail.ru
In paper the philosophys of application of visions in motion control systems of the underwater robot are explained. The algorithms of identification of entities on the images, founded on simulated neuronic of webs surveyed. For organization of dimensioned moving of the robot is offered cognitive the approach oriented to integration in the control algorithms by movement neuronic of webs of miscellaneous topologies. The processes of processing of the images and usage of the received results for forming control instructions are considered.
Key words: a vision, web’s neuronic, cognitive a fashion, movement control.

THE INFLUENCE OF A SMALL THICKNESS VARIATION ON FREE FLEXURAL VIBRATIONS OF A THIN CIRCULAR RING

Taranukha N. A., Leyzerovich G. S., Kozlovskaya N. A.
Komsomolsk-on-Amure State Technical University

e-mail: taranukha@knastu.ru
tel.: (4217) 54 30 74
The influence of small imperfections in the form of variable thickness on the dynamic characteristics of the infinitely long circular cylindrical shell (thin ring in plane deformation) is studied. The equations, describing the flexural vibrations of an imperfect ring, are obtained by using Lagrange equations.
It is believed, that the variable thickness result in interaction bending form with identical numbers of waves, shifted in the circumferential direction at an angle p/2.
It is established that the thickness variation fixes the position of nodes vibration modes, and can also lead to a slight splitting of the frequency spectrum, undesirable from the standpoint of dynamic strength.
Key words: thin circular ring, a small thickness variation, the splitting of the frequency spectrum.

About designing of some multipurpose small-sized  autonomous underwater vehicles

Antonenko S. V., Far Eastern Federal University

Gornak V. E., Kushnerik A. A., Maltseva S. V., Scherbatyuk A. Ph.
Institute for Marine Technology Problems FEB RAS
e-mail: alex-scherba@yandex.ru;
tel.: (8-423-2432647)
The given report is devoted to designing of two small-sized AUVs. One of them (MARC) has weight about 50 kg and is intended for work on depth up to 200 meters. The second (ММТ-3000) has weight from 200 kg and is intended for work on depth up to 3000 meters. Some stages of mentioned AUVs designing are discussed. The structure and main characteristics of both AUV are considered.
Key words: autonomous underwater vehicles, structure, designing.

DEVELOPMENT OF MODEL OF A SHIP INTERNAL COMBUSTION ENGINE WITH A SUBSYSTEM OF DIAGNOSTICS OF A TECHNICAL CONDITION ON THE BASIS OF INDISTINCT LOGIC

Buj Ngoc Hai, Golovko S. V., Romanenko N. G.,
Svirepov Ph. V.
FSE HPE «ASTU»

tel.: (8)-8512-61-45-49;
e-mail: hai_nht251083@yahoo.com;
e-mail: elmech@astu.org; e-mail: philipp.88@mail.ru
In this article the diagnostic model of the ship diesel engine as object of control is presented. For modelling the diesel engine 6HN 15/18 (3D6N) has been chosen.
Diagnostics principle is based on the method comparative operations between current diagnostic signs and similar reference with application of self-trained is indistinct-neural networks. It allows to define a technical condition and optimum algorithm of control at any moment. Modelling was spent with use of package MATLAB Simulink. The model consists of two systems, a control system and diagnostics. Detailed description and also the simplified algorithm of control with diagnostics function is given. The received model after test has confirmed the adequacy to the real ship engine (SE) and possibility of use for working out and testing similar systems for various designs of engines.
Key words: diagnostic model, the ship diesel engine, the object of control, the method comparative operations, fuzzy-neural network.

PROBLEMS OF FORECASTING AND MONITORING OF EXTREME SITUATIONS BY METHODS OF THE MODERN CATASTROPHE THEORY

Nechaev Yu. I.,
State Marine Technical University of St. Petersburg

Burakovskiy E. P., Burakovskiy P. E.,
Prokhnich V. P.
Kaliningrad state technical university

e-mail: e_burakovsky@mail.ru
tel.: 8-4012-36-43-38
The problem of forecasting and monitoring of extreme situations while in process of ships explotation is discussed. The special attention addresses on the decision of a problem within the limits of the modern of catastrophe theory at functioning of onboard intelligence system of maintenance of safety of navigation.
Key words: forecasting, monitoring, extreme situations, catastrophe theory, intelligence system.

DYNAMIC ENVIRONMENTS AND UNCERTAINTY PROBLEM IN THE ANALYSIS AND A FORECAST OF EMERGENCY SITUATIONS UNDER OPERATING CONDITIONS HARVESTING VESSELS

Nechaev Yu. I.,
State Marine Technical University of St. Petersburg

Burakovskiy P. E.,
Kaliningrad state technical university

e-mail: paul_b@mail.ru
tel.: 8-4012-36-43-38
Questions of classification of dynamic environments in the conditions of uncertainty are discussed at the analysis and the forecast of extreme situations under operating conditions of trade ships. The special attention addresses on the decision of a problem of use of intelligence technologies at interpretation of current situations by methods of the modern catastrophe theory.
Key words: the dynamic environment, uncertainty, intelligence system, catastrophe theory.

Скачать выпуск №2 2012 в формате PDF
Разработка сайта