НИЦ "Моринтех"

intellectual technology for manufacture of the moss maritime semi-submerged offshore platform

M.N. Zelenin, V.S. Mikhaylov
Joint stock corporation “Shipbuilding & Shiprepair Technology Center
V.V. Borodin, V.P. Kylikov
JSCo «PO «Sevmash»
The report considers the problem of development of MOSS Marine semisubmersible drilling platform building technology. Platform hull is a complex structure with significant dimensions. At that, production conditions did not allow to form the whole hull on building berth, so there was a necessity to develop the technology of assembly afloat. All his made the task extremely complex and required the scientifically valid approach.
Key words: building technology, semisubmersible drilling platform, technology of assembly afloat,

offshore Gas line environmental effect evaluation methods

V.K. Goncharov, I.V. Ivanov
State Marine Technical University of St.Peterburg
e-mail: 7june@mail.ru
The high probability based on the analysis of the statistical data of gas emergency outflow and emissions from seabed pipelines is shown, and their probable ecological consequences are considered. Ways of adequate methods development for an estimation of sea gas pipelines influence on an environment are formulated.
Key words: seabed gas lines, gas blowout, environmental effects, accident rate, airlift model, evaluation methods

PRACTICAL ALGORITHM OF LOAD FORECASTING ON   THE INTERNAL CONSTRUCTIONS OF TANKERS AT DEFLAGRATION OF AIR-GAS MIXTURES

Aung Myo Win, O.Ya. Timofeev
State Marine Technical University of St.PeterburgIn the article physical bases of deflagration and the practical algorithm of load forecasting on the internal constructions of tankers at deflagration of air-gas mixtures is described. Also calculation model for deflagration of methane is stated. Adjustment of current load on the constructions of the tank is executed depending on the sizes of destruction zones. Adjustment is realized with the help of the program "ANSYS".
Key words: deflagration, explosion of the tanker, failure of a construction, deflagration of air-gas mixture, calculated adiabatic flame temperatures (CAFT).

INTELLECTUALIZATION OF INTEGRITY TESTING OF THE LOW-REDUNDANCY NAVIGATION SYSTEMS

A.V. Osipov
CONCERN CSRI ELEKTROPRIBOR, JSC
A procedure of integrity monitoring for the case then diagnostic information is contained in the form of evidences and a posterior probabilities. Given the necessary a prior information each evidence is characterized by probabilities of right and wrong decisions, next the data fusion is realized by Bayes rule. Given the nonprecision information about the evidences properties the artificial intelligence method is proposed through the basic probabilities assignment.
Key words: integrity monitoring, testing of the low-redundancy systems, artificial intelligence method, basic probabilities assignment

SYNTHESIS OF DIGITAL CONTROL ALGORITHMS TRAFFIC CONTROLLED INTENSITY OF actuator

V.M. Korchanov
Concern AVRORA Scientific and Production Association Join Stock Company
K.Yu. Polyakov
State Marine Technical University of St.Peterburg
The new class of digital laws of management is offered by movements which allow providing the given frequency of a rearrangement with rudders and other controls. Efficiency of a method is shown on an example of system of stabilization of the ship on a rate.
Key words: motion control, digital control algorithm, actuator

sea turbulence velocity field correlation properties used in the vibration-protected hydrophysical converter systems for movable equipment car

G.A.Fedotov
“Granit-7:”Ltd
New principle of cancellation of the additive vibrational noise disturbances distorting the signals of the velocity field transducers is formulated. The principle is the basis of formation of the transducer systems potentially immune to vibration. It is shown that the use of the vibration-proof transducer systems installed on the vibrating carriers of hydrophysical instrumentation leads to an increase in the efficiency of indication of the turbulent areas in the marine medium
Key words vibrational noise, vibration-proof transducer system, turbulent areas in the marine medium

ANALYSIS OF ALTERNATIVES IN SYSTEMS OF INTELLECTUAL DECISION SUPPORT

A.I. Baranov
CDB ME “Rubin”
We discuss the approach to the analysis of alternatives in fuzzy environment for the functioning of the intellectual support for the designer. Analysis was performed on the approach of Bellman – Zadeh. The specific examples of the developed approach in the selection of design decisions when creating complex multi-functional facility.
Key words intellectual support for the designer,  fuzzy environment

ANALYSIS OF "HIDDEN" KNOWLEDGE OF CORPORATE SYSTEMS

Joe Thu Wun
State Marine Technical University of St.Petersburg
The problems of using the concept of Data Mining in the identification of "hidden" knowledge. Shows the structure of decision support system for the identification of "hidden" knowledge. Examples of the use of the concept of Data Mining with the use of formal kotseptualnogo analysis and the theory of artificial neural networks
Key words: "hidden" knowledge, structure of decision support system, artificial neural networks

IMPROVED TECHNOLOGY FOR MANUFACTURING propellers BY THE GOVERNING PROGRAM

V.A. Denisov
JSC «SHIPPREPAIRING CENTER «ZVYOZDOCHKA»
K.N. Kulikov
Open Joint Stock Company Onega R&D Technological Bureau
V.G. Makarov
State Marine Technical University of St.Petersburg
The problems of development and implementation of control programs of processing of complex curved surfaces of the propeller through a system Unigraphics
Key words: control programs, complex curved surfaces, propellers

Generalized model of intelligent agents in MARINE INFORMATION SYSTEMS

s.A. Yakovlev, A.N. Shvetsov
Saint Petersburg Electrotechnical University "LETI"
In this paper we consider a generalized model of intelligent agent that takes into account the hierarchical organization of agents in a distributed system, the complex structure of information space and the objectives pursued by the agents, and allows you to create on its basis, the specific interpretation of the deliberative and reactive agents in the structure of marine intelligent information systems.
 
Keywords: generalized model of intelligent agent, hierarchical organization, distributed system

COMPUTATIONAL IDENTIFICATION OF AREAS FOR CAVITATION propeller blades and on the steering wheel

A.S. Achkinadze, I.S. Stepanov, V.I. Krasilnikov
State Marine Technical University of St.Petersburg
Berg Ааге
MARINTEK Sintef Group, Dept. of Ship Performance,
P.O.Box 4125 Valentinlyst, N-7450 Trondheim, NORWAY
This paper describes an original high-order panel method for analysis of cavitating propeller and rudder. The main feature of the developed method is fully correct mathematical formulation in the both cases of non-cavitating and cavitating flow, and direct satisfaction of Kutta-Jowkovski condition applying a specially modified trailing edge . A simplified approach for estimation of the pressure on rudder in the wake behind propeller is discussed. The results of the numerical/experimental verification are presented
Keywords: analysis of cavitating propeller and rudder, estimation of the pressure on rudder in the wake behind propeller,

Physical fundamentals of transforming electric energy into mechanical thrust energy in the superconducting hydrojet propulsors

N.P. Gerasimov, F.F. Legusha, Yu.V. Petrova, A.V. Smolnikov
State Marine Technical University of St.Petersburg
The physical basis of conversion of electrical energy into mechanical energy in the superconducting MHD – propeller, capable of working in marine environments. The mathematical expressions for the evaluation of the Lorentz force and magnetic fields. Identified components of the magnetic field in the warm volume (the acceleration channel).
Keywords: conversion of electrical energy into mechanical energy, superconducting MHD – propeller,  Lorentz force and magnetic fields

EVALUATION OF THE SPECTRAL DENSITY FUNCTION Noise emissions Surface ships in the far field based on experimental data

V.G. Timoshenkov
FGUP "CSRI" Morphyspribor "
A comparative evaluation of the results of calculation of the signal to noise ratio in the frequency ranges for the famous fall of the spectrum and the results of experimental studies with surface ship noise emissions. We present graphical dependence and statistical estimates obtained in the wild at different distances when receiving the signal of the stationary system in an isotropic noise field. It is shown that the results of calculations differ from the sonar practice, because of the ratio of coherent and incoherent components of the field during the propagation of noise emissions.
Keywords: surface ship noise emissions, receiving the signal, coherent and incoherent components

TITANIUM ALLOYS FOR MARITIME STRUCTURES

I.V. Gorynin, S.S. Ushkov, A.V. Baranov,
V.I. Mikhailov, B.G. Ushakov
CRISM “Prometey”
Keywords: titanium alloys, maritime structures