Wszystkie pola: ship propulsion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Parametric functions of ship propulsion engine operation
Autorzy:: Roslanowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/247696.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transformation of energy
operation of engine
dimensional space
dimensional functions
Opis:: The following article presents the method of determining the ship 's propulsion engine operation basing on the engines work parameters by means of dimensional analysis. The operation of engine is considered as effective energy transfer to ship propeller in the form of work during its operation. According to Girtler engine operation can be considered as, a new physical quantity of dimension Joul multiplied by second [2, 3J. A random type of combustion in engine cylinders makes possible to deal with engine operation as a random variable vectors in the Hilbert space isomorphic with dimension space. The analysis of stochastic engine workprocess is alternatively used as a set of determinist time functions by means dimension analysis. Parametric functions of engine work were determined on the basis of algebraic analysis scheme designed by S. Drobot. This scheme makes possible to control the correctness of conclusion rules regarding mathematics in digital functions describing operation of ship propulsion engine. Additionally the parametric form of function makes possible to investigate the influence of function parameters on correctness of engine operation. It makes possible to forecast the engine operation i given sailing conditions and to estimate steerability of ship during the voyage. It improves the safety of ship operation propelled by single engine propulsion plant.
Źródło:: Journal of KONES; 2010, 17, 4; 407-413
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Diagnosing of ship propulsion elements by vibration measurement
Autorzy:: Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/244654.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnosing
vibroacoustics
gas turbine engines
ship propulsion plantDiagnosing
ship propulsion plant
Opis:: In the present time the technical progress, make us use more and more complicated machines in our everyday life. The application of turbine engines as the main propulsion engines of a vessel impels, according to requirements, operation procedures. It alters considerably the usage of gas turbine engines in the navy from the ones in aviation. The relatively low load is characteristic to the operation of the marine engine. In the case of the technology used at sea, the necessity of highly specialized service is especially evident. In the paper, we present the diagnostic systems elaborated to support the exploitation of the vessel power plant with gas turbines. Application of computer simulation for diagnosing a technical state of gas turbines rotor sets should be applied during calculation and project process. During engine assembly, the rotating components are mounted with great care with the main objective of minimizing shaft unbalance. However, even with the best of care, such factors as machining imperfection, differential thermal expansion etc cause a small residual unbalance of gas turbine rotor. The dynamic problems of Marine Gas Turbine Engines are connected with such basic elements: rotors, bearings, struts of bearings, engine body and type of substructure. The proposed diagnostics method makes it possible to determine the limiting value of vibration symptoms .
Źródło:: Journal of KONES; 2011, 18, 1; 93-98
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Diagnosing elements of ship propulsion of vibration measurement
Autorzy:: Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/243179.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnosing
vibroacoustics
gas turbine engines
ship propulsion plant Diagnosing
ship propulsion plant
Opis:: In the present time the technical progress make us use more and more complicated machines in our everyday life. In the case of the technology used at sea the necessity of highly specialised service is especially evident. The diagnostic systems elaborated to support the exploitation of the vessel power plant with gas turbines are presented in the paper. Application of computer simulation for diagnosing a technical state of gas turbines rotor sets should be applied during calculation and project process. During engine assembly, the rotating components are mounted with great care with the main objective of minimising shaft unbalance. However, even with the best of care, such factors as machining imperfection, differential thermal expansion etc cause a small residual unbalance of gas turbine rotor. The dynamic problems of Marine Gas Turbine Engines are connected with such basic elements as rotors, bearings, struts of bearings, engine body and type of substructure.
Źródło:: Journal of KONES; 2007, 14, 2; 81-89
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Challenges of ship propulsion systems during DP operations
Autorzy:: Herdzik, I.
Powiązania:: https://bibliotekanauki.pl/articles/247849.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: propulsion system
challenge
dynamic positioning operation
safety of propulsion system
energy storage devices
Opis:: Ship propulsion configurations with dynamic positioning systems are commonly used as diesel-electric. In particular, situations for ship transfer on longer distances may be used conventional mechanical propulsion system with controllable pitch propeller. Combination of mechanical and electric propulsion system called hybrid propulsion is met as well, where the thrusters of DP systems are driven through the gear by mechanical engine or electric motor independent or both. For the sake of the necessity of limitation of total installed power on the ship may occurred problems with power distribution between the ship propulsion and industry part. It will especially concern those situations when we need to keep power supply to the industry part and there is a necessity to increase the power delivered to ship propulsion part for the purpose of keeping the ship position or heading. The primary task of power management system (PMS) is blackout prevention in ship energetic network and so power distribution to overcome critical conditions of it. Temporarily it may occur the worsening of positioning operation accuracy without any critical situations of industry part. The possibility of momentary overloading of energetic network is primary condition of safety. The critical duration of overloading is one minute. This is indispensable time for increasing the accessible power in the energetic system through switching on the next genset to work. It is a necessity of quick analysis in critical conditions to value what key-actions ought to do in the aim of overcoming emergency situations. The next one is a usage of energy storage devices. It is possible through AC/DC conversion. It was tried to find solutions of equalization the load of gensets to the ship electric energy demand.
Źródło:: Journal of KONES; 2012, 19, 2; 211-217
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Designing constraints in evaluation of ship propulsion power
Autorzy:: Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/244237.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: seagoing ships
hull coefficient
hull dimensions parameters
propulsion power
Opis:: Preliminary ship owners' assumptions for new ship consist of deadweight (for container vessel load capacity TEU), speed shipping line and others. Taking it as a base, in early stage of design one has to select propulsion type. This goal needs definition of principal dimensions of a vessel, which are the base for further calculations of hull’s resistance and evaluation of necessary power of main engine (engines) to fulfil shipping requirements. Selection of main dimensions of vessel is limited by rules regarding buoyancy, stability, hull strength, manoeuvring capability, and limitations related to seaways or harbours characteristic. In this paper is presented the methodology of calculation of principal parameters of a vessel, necessary for calculation of displacement in relation to vessel’s type, volumetric coefficients, Froude number, and others values affecting ship’s dimensions. It is about midship section coefficient, waterline coefficient, prismatic coefficients and hull feature and area coefficients. Those values are necessary for calculation of hull resistance. In the table are presented comparison of results of calculations above mentioned values and movement resistance and propulsion power of three container vessels representing different load capacity and one bulk carrier. There are also presented different calculation methods of transverse midship section coefficient and wet area coefficient, for 5000TEU container vessel.
Źródło:: Journal of KONES; 2013, 20, 1; 29-34
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Operation of diesel engine in direct ship propulsion
Autorzy:: Rosłanowski, J.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/247108.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transformation of energy
engine performance
space-dimensional
dimensional feature
Opis:: In the paper an identification of low speed diesel engine operation in direct propulsion plant equipped with fixed pitch propeller during ship manoeuvring. It was starting of engine and gathering speed of ship. Analysis of engine operation was based on changes of engine torque and time of ship bring up to speed. Operation of reciprocating internal combustion engine consists in converting the supplied fuel energy and delivering it to ship propeller. This condition implicates converting different amounts of energy in different time. The main attention was given to operation of engine caused by crank pin forces in wide range of revolutions and their influence on mechanical load of ship propulsion plant. The torque is the major component determining the engine load. As a matter of fact its mean value is low, but a passing torque can be four times higher than the rated torque. The second important component of propulsion engine operation is the time of ship acceleration from one speed to another. It determines dynamic properties of the ship describing its reductional feature. This time is determined in dependence on other parameters characterizing operation of ship propulsion plant and ship motion by means of dimensional analysis. These parameters were regarded as dimension quantities of three-dimensional space. Thus the three independent in dimension parameters can be noted in digital form in dimensional functions. The knowledge of operation parameters of ship propulsion plant and the knowledge of ship motion dynamics makes possible rational manoeuvring. It increases safety of ship motion and failure-free operation of ship propulsion engine. The proper operation of engine requires delivery to the propeller such amount of energy, which ensure the motion of ship with required speed in given sailing conditions.
Źródło:: Journal of KONES; 2011, 18, 4; 413-420
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Experimental analysis of the effectiveness of ship propulsion devices
Autorzy:: Abramowicz-Gerik, T.
Powiązania:: https://bibliotekanauki.pl/articles/320536.pdf
Data publikacji:: 2008
Wydawca:: Polskie Forum Nawigacyjne
Tematy:: napędy okrętowe
modelowanie
siły hydrodynamiczne
ship propulsion
modelling
hydrodynamic forces
Opis:: The paper presents the study on the effectiveness of ship propulsion devices based on model tests conducted in the open water experimental set up. The influence of the water depth to draft ratio and distance from the vertical tight wall on the hydrodynamic forces generated by the propellers on the ship hull was investigated. The interaction effects observed for the twin propeller ship in bollard pull condition were compared with the effects induced by single propeller vessels available in literature and discussed with respect to the mathematical modelling of hydrodynamic forces generated on the hull by ship propulsion devices.
Źródło:: Annual of Navigation; 2008, 13; 5-13
1640-8632
Pojawia się w:: Annual of Navigation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The effect of hull biofouling on parameters characterising ship propulsion system efficiency
Autorzy:: Tarełko, W.
Powiązania:: https://bibliotekanauki.pl/articles/259814.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship
hull
biofouling
propulsion system
efficiency
Opis:: One of most important issues concerning technical objects is the increase of their operating performance. For a ship this performance mainly depends on the efficiency of its main propulsion system and the resistance generated during its motion on water. The overall ship resistance, in turn, mainly depends on the hull friction resistance, closely related with the presence of different types of roughness on the hull surface, including underwater part biofouling. The article analyses the effect of hull biofouling on selected parameters characterising the efficiency of the ship propulsion system with adjustable propeller. For this purpose a two-year research experiment was performed on a sailing vessel during its motor navigation phases. Based on the obtained results, three groups of characteristics were worked out for different combinations of engine rotational speed and adjustable propeller pitch settings. The obtained results have revealed that the phenomenon of underwater hull biofouling affects remarkably the parameters characterizing propulsion system efficiency. In particular, the development of the biofouling layer leads to significant reduction of the speed of navigation.
Źródło:: Polish Maritime Research; 2014, 4; 27-34
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Determination of nondimensional arguments in dimensional functions of ship propulsion engine operation
Autorzy:: Rosłanowski, J.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/246528.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ship propulsion engine operation dimensional analysis
dimensionless arguments in dimensional functions
Opis:: The following article describes different ways for determining dimensionless arguments in dimensional functions of ship propulsion engine operation. Dimensional space has also been characterized in relation to properties it possesses. An attention has been paid to the fact that it creates Abelian group, where involution fulfils multiplication axiom by scalar, and positive numbers that belong to dimensional space create dimensionless subspace. The conception of dimensional dependence has also been explained. There are also described conditions, which should be fulfilled by dimensional quantities to be dimensionally independent. Fundamental theorems of dimensional analysis have also been characterized. There is also given the definition of dimensional function of ship propulsion engine operation concerning values and dimensional arguments. It has been explained what requirements are to be fulfilled. One can also learn what limitations are imposed on dimensional function of ship propulsion engine operation concerning dimensional homogeneity and invariance. The ways of dimensional function transformation into a numerical one have been described. In addition, some conditions have been given which must be applied at given method of dimensional function transformation. An attention has been paid to the fact that dimensionless arguments are similarity invariant as a result of transformation by the similarity method of mathematical model of ship propulsion engine operation. In this study, the ship propulsion engine performance is expressed by product of Joule and second interpreted as transfer of energy in the form of work. Identification of ship propulsion engine operation by dimensional analysis performed in terms of its usefulness for diagnosis of ship propulsion engines. The basic problem of marine diesel exploitation is the monitoring of its technical condition. Diagnosis of marine diesel propulsion increases the safety of the ship and thus protects the marine environment against pollution.
Źródło:: Journal of KONES; 2015, 22, 2; 185-190
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Possibilities of improving safety and reliability of ship propulsion system during dp operations
Autorzy:: Herdzik, I.
Powiązania:: https://bibliotekanauki.pl/articles/247846.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: propulsion system
dynamic positioning operation
reliability
safety
propulsion system solutions
Opis:: Improving safety and reliability of ship propulsion system during dynamic positioning (DP) operations of multipurpose vessels is an essential advantage. It may be such possibilities obtained by application the considered solutions of propulsion systems and all other elements of energetic system. The minimum requirements were determined by creating the regulations of dynamic positioning systems and their levels. Applying the solutions, which were exceeded the limits of basic requirements, allows to increase the safety and reliability levels with a low rise the investment costs. Many marine companies try to invent so low cost solutions. An example analysed in the paper is the Wartsila LCC system. The applications of more complicated solutions in comparison to required duplicated systems are expensive. The cheaper solution is an investing in the development of automatics configurations (for those systems it was applied the triple and quadruple configurations) which in transient or emergency conditions may obtain the time delay making possible a support of industry part work and DP systems. In emergency situation, after the loss of position by DP system, the power management system allow the safe break of work the industry part and return to work after elimination the critical condition.
Źródło:: Journal of KONES; 2012, 19, 2; 219-226
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Assembling of bearing sleeve on ship propulsion shaft by using EPY resin compound
Autorzy:: Grudziński, K.
Grudziński, P.
Jaroszewicz, W.
Ratajczak, J.
Powiązania:: https://bibliotekanauki.pl/articles/259011.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: bearing sleeve
propulsion shaft
assembling
EPY resin compound
Opis:: This paper presents an original novel solution of the problem of assembling a large bearing sleeve (of about 1000 mm in diameter) on ship propulsion shaft by using EPY resin compound. The problem is discussed on the concrete example dealing with a ship under repair. Design project of assembling the sleeve on the shaft by using the resin compound, model research on its casting process as well as assembling technology of the sleeve on the shaft, are presented and a practical way of realization of the project in conditions of a Chinese ship repair yard, is also highlighted. During more than three-year-long operation the solution has standed the test of time without any complaint.
Źródło:: Polish Maritime Research; 2012, 2; 49-55
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Fuzzy identification of the reliability state of the mine detecting ship propulsion system
Autorzy:: Pająk, Michał
Muślewski, Łukasz
Landowski, Bogdan
Grządziela, Andrzej
Powiązania:: https://bibliotekanauki.pl/articles/259740.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ships
rotational system
mutual correlation
non-coaxiality
fuzzy clusters
Opis:: The study presents the evaluation and comparative analysis of engine shaft line performance in maritime transport ships of the same type. During its operation, a technical system performs functions for which it was designed. It goes through different states. Dynamic state changes of a rotational system can be identified by means of its vibration measurement. For this purpose, a research was carried out which involved recording vibrations of the analysed rotational systems. The recordings were used for calculating selected characteristics in the time-domain, where one of the most unique is the value of the normalized mutual correlation function. On the basis of the concentration values, the characteristics which unambiguously determine the ability state were selected for further studies. Then an identification method for rotational system non-coaxiality was proposed. The method involves using fuzzy clustering. According to this method the values of input signal characteristics were used to formulate fuzzy clusters of system ability and inability states. The method can be used for identifying the current state of the system. The study presents the results of the application of this method in engine turbine shaft lines of minesweepers, with the rotational system selected as an example. It needs to be noted that the efficiency of identifying the operating state of the system with this method is higher than with other methods described in the literature by authors who deal with this issue. The research results have a significant impact on the evaluation of mechanical properties of the studied objects and directly affect operational states of mechanical systems, including those installed in minesweepers, thus determining their reliability.
Źródło:: Polish Maritime Research; 2019, 1; 55-64
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: A Model of Ship Propulsion Systems Operating Process
Model procesu eksploatacji układu napędowego statku
Autorzy:: Girtler, J.
Powiązania:: https://bibliotekanauki.pl/articles/360243.pdf
Data publikacji:: 2004
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: proces eksploatacji
proces semimarkowski
układ napędowy statku
EXPLO-SHIP 2004
operation process
semi-Markov process
ship propulsion system
Opis:: The paper contains a formal description of ship propulsion systems operation process. The model of the process is presented in the form of two-dimensional stochastic process of which coordinates are semi-Markov processes of the final states set. The former process describes the process of changes in technical states of ship propulsion systems, the latter - the process of changes in their operating states. A monovariate model of ship propulsion systems operation process has also been proposed.
Podano opis formalny procesu eksploatacji układów napędowych statków. Model tego procesu przedstawiono w formie dwuwymiarowego procesu, którego współrzędnymi są procesy semi-Markowa o skończonych zbiorach stanów. Jeden z tych procesów jest procesem zmian stanów technicznych układów napędowych a drugi - procesem zmian ich stanów eksploatacyjnych. Zaproponowano także jednowymiarowy model procesu eksploatacji układów napędowych statków.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 211-220
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Multi-source-supplied parallel hybrid propulsion of the inland passenger ship STA.H. Research work on energy efficiency of a hybrid propulsion system operating in the electric motor drive mode
Autorzy:: Kowalski, J.
Leśniewski, W.
Litwin, W.
Powiązania:: https://bibliotekanauki.pl/articles/259623.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: hybrid ship propulsion
ship propulsion
Opis:: In the Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, design has recently been developed of a small inland ship with hybrid propulsion and supply system. The ship will be propelled by a specially designed so called parallel hybrid propulsion system. The work was aimed at carrying out the energy efficiency analysis of a hybrid propulsion system operating in the electric motor drive mode and at performing the noise pollution measurements. The performed investigations have shown that a significant impact on the efficiency and on the acoustic emission has the type of belt transmission applied.
Źródło:: Polish Maritime Research; 2013, 3; 20-27
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Case Study on the Unavailability of a Ship Propulsion System under Aging Effects and Maintenance
Autorzy:: Okazaki, T.
Powiązania:: https://bibliotekanauki.pl/articles/117350.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: vessel exploitation
unavailability of a ship propulsion system
ship propulsion
ship propulsion system
aging effects
ship maintenance
GO-FLOW
fuel consumption
Opis:: Unavailability of a ship propulsion system under aging effects and proper maintenance is estimated using GO-FLOW. GO-FLOW is an effective software tool for the unavailability analysis of complex systems. Aging effects are incorporated into GO-FLOW using a time-dependent technique and assuming a linear aging model. The results show that the aging effects and improper maintenance can potentially increase the frequency of accidents due to a malfunction of the propulsion system by a factor of three.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 501-508
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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