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Wyświetlanie 1-15 z 53
Tytuł:
Parametrical method for determining optimal ship carrying capacity and performance of handling equipment
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/258961.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship design
deadweight and cargo handling optimization
required freight rate
Opis:
The paper presents a method of evaluating the optimal value of the cargo ships deadweight and the coupled optimal value of cargo handling capacity. The method may be useful at the stage of establishing the main owners requirements concerning the ship design parameters as well as for choosing a proper second hand ship for a given transportation task. The deadweight and the capacity are determined on the basis of a selected economic measure of the transport effectiveness of ship – the Required Freight Rate. The mathematical model of the problem is of a deterministic character and the simplifying assumptions are justified for ships operating in the liner trade. The assumptions are so selected that solution of the problem is obtained in analytical closed form. The presented method can be useful for application in the preliminary ship design or in the simulation of pre-investment transportation task studies.
Źródło:
Polish Maritime Research; 2016, 2; 19-24
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An algorithm for preliminary estimating hull structure mass and mass centre height of inland navigation ships
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/259173.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
preliminary ship design
ship structure
preliminary ship mass estimation
Opis:
The paper presents an algorithm for preliminary calculation of mass and mass centre height of hull structure of inland navigation ships. It was elaborated basing on requirements of the Rules for the Classification and Construction of Inland Navigation Ships of Polish Register of Shipping, with application of a simplified method of estimating mass of hull plating stiffeners. The algorithm deals with the dimensioning of scantlings of structural members of classical ships intended for shipping dry cargo, and dry and liquid bulk cargoes; however it does not cover ships of entirely different structural arrangement such as roll-on-roll-offships fitted with heavy decks, as the dimensioning of their scantlings is based on different models.
Źródło:
Polish Maritime Research; 2005, 1; 8-12
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A parametric method for preliminary determining of mass characteristics of inland navigation ships
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/259549.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Inland waterways vessels
ship preliminary design methods
Opis:
This paper presents a method for estimation of mass characteristics of vessels, elaborated with the use of an algorithm based on requirements of the Rules for the Classification and Construction of Inland Waterways Vessels of Polish Register of Shipping, and on a simplified method [6] for determination of mass of hull plating stiff"eners. The dimensioning method of hull structure scantlings based on this algorithm concerns classical vessels intended for the carrying of general cargo, dry and liquid bulk cargoes, which determine the range of the method application. The method does not cover vessels of different construction, e.g. roll-on-roll-off type vessels equipped with heavy decks, as the dimensioning of their scantlings is based on different relationships and models.
Źródło:
Polish Maritime Research; 2005, 3; 9-14
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric method for evaluating optimal ship deadweight
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/259752.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship design
owners requirements
optimal deadweight
required freight rate
Opis:
The paper presents a method of choosing the optimal value of the cargo ships deadweight. The method may be useful at the stage of establishing the main owners requirements concerning the ship design parameters as well as for choosing a proper ship for a given transportation task. The deadweight is determined on the basis of a selected economic measure of the transport effectiveness of ship – the Required Freight Rate (RFR). The mathematical model of the problem is of a deterministic character and the simplifying assumptions are justified for ships operating in the liner trade. The assumptions are so selected that solution of the problem is obtained in analytical closed form. The presented method can be useful for application in the pre-investment ships designing parameters simulation or transportation task studies.
Źródło:
Polish Maritime Research; 2014, 2; 3-8
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method of predicting main propulsion power for inland waterways push trains
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/260437.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland waterways ships
ship design
brake horse power of push trains
Opis:
This paper presents a method of predicting effective power demand (brake horse power – B.H.P.) for propulsion of inland waterways push train, useful in the preliminary design stages. By using it, on the basis of known main particulars of a given push train, i.e. its length, breadth, draught and speed, a generalized Admiralty formula can be determined and then the pusher propulsion power can be preliminarily predicted by making use of the elaborated structure of the formula. Application of the method is illustrated on the example of a two-segment push train of inland waterways passenger ship designed in the frame of the Eureka INCOWATRANS E!3065 project.
Źródło:
Polish Maritime Research; 2006, S 2; 43-46
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for preliminary estimation of the length of midship body block to be inserted during ship’s conversion
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/260473.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship design
ship conversion
increase of ship deadweight
lengthening of ships
Opis:
The paper presents a method for preliminary estimation of the length of the midship body block, which inserted in the original hull, increases the deadweight of the ship in line with a required quantity. The method may be useful for establishing the scope of conversion to better adjust the ship for transportation tasks. The problem is formulated by using a mathematical model so selected that its solution, under set of assumptions, is obtained in a closed analytical form. The presented method can be useful for application to pre-investment analysis of the ship conversion costs and functional profits.
Źródło:
Polish Maritime Research; 2017, 1; 42-46
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric method of prediction of the ship operating costs
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/962819.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship design theory
ship operating costs
Opis:
Paper presents results of studies on a parametric method of predicting ship operating costs - useful in the preliminary ship design. Conception and theoretical basis of the method are presented, identified are also factors of significant importance for the ship operating costs, taking into account changes in the value of money. Approximation formulae for estimating the operating cost components have been developed as well as a computational algorithm based on a minimum Required Freight Rate (RFR). The useful character of the method is illustrated by examples of operating cost predictions for four different ship types designed in the Eureka project E!2772, i.e.: SINE 202 universal container carrier, SINE 203 oil product tanker, SINE 204 ro-ro ship and SINE 205 river-sea ship.
Źródło:
Polish Maritime Research; 2004, S 1; 20-23
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric method of preliminary prediction of the ship building costs
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/962798.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ships design theory
ship building costs
Opis:
Paper presents results of studies on a parametric method of predicting ship building costs - useful in the preliminaly design. Conception and theoretical basis of the method are presented, devised are also approximation formulae for estimating the building costs of the ship hull, ship equipment and the power plant with propulsion system. Factors of importance for the ship building costs are identified and a computational algorithm formulated. The useful character of the method is illustrated by examples of building cost predictions for four different ship types designed in the Eureka project E!2772, i.e.: SINE 202 universal container carrier, SINE 203 oil product tanker, SINE 204 ro-ro ship and SINE 205 river-sea ship.
Źródło:
Polish Maritime Research; 2004, S 1; 16-19
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A parametric method for evaluation of resistance of swath ships
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/258660.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
SWATH ships design method
SWATH ships resistance evaluation method
Opis:
This paper contains formulation of a parametric method for evaluation of SWATH ship’s hull resistance. The method was elaborated on the basis of numerical calculation results obtained by using structural methods based on ship hydrodynamic theory and performed for sufficiently large series of body forms with systematically changing ship form parameters. Also, results of verifying investigations dealing with features of the method in question are presented by comparing the obtained resistance characteristics with those achieved by other authors as well as with ship model experimental test results. The obtained results of the verification indicate that the elaborated method can be useful in preliminary designing the SWATH ships.
Źródło:
Polish Maritime Research; 2008, 1; 3-10
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric method for determination of motion characteristics of underwater vehicles, applicable in preliminary designing
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/258672.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
underwater vehicles
preliminary designing method
Opis:
This paper describes a method for preliminary designing the autonomous underwater vehicles (AUV), especially useful in the case when requirements concerning kinematic and dynamic parameters of vehicle motion are given in design assumptions. Concept of the method is based on dynamic equations which describe vehicle planar motion in vertical and horizontal directions, resulting from action of screw propellers or water ballast, respectively. The motion equations were determined by applying simplifications concerning both geometrical description of vehicle’s form and flow phenomena. Their solutions were obtained in the form of closed analytical expressions which are both of cognitive and practical merits as they can serve to assess influence of vehicle’s design parameters on its motion characteristics and simultaneously are convenient to formulate design optimization problems. Application of the method was illustrated by the attached examples dealing with determination of kinematic and dynamic characteristics of motion of the vehicle „Scylla” of set geometrical configuration and propulsion parameters.
Źródło:
Polish Maritime Research; 2009, 2; 3-10
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A parametric method for preliminary determination of underwater vehicles deadweight
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/258992.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
designing of underwater vehicles
mass and deadweight of underwater vehicles
Opis:
This paper describes a method useful for determination of load carrying capacity of underwater vehicle, elaborated on the basis of investigations of series of vehicles of systematically changed geometrical dimensions. By using the set of the series of vehicles their structural mass and displacement – at a given structural material and assumed maximum permissible submersion depth – were determined, and next – approximation formulae for deadweight of vehicles were obtained. Vehicle’s form may be consisted of one or a few cylindrical floats of circular cross-section, ended with caps. The floats are joined together with a space pipe frame. Acceptability of design solutions results from comparison of working stress values in float’s shell plating with permissible stresses as well as critical stresses. The presented method may be useful in the preliminary stage of designing the underwater vehicles - i.e. may serve for preliminary determination of a vehicle deadweight – at its given, or determined, geometrical dimensions, maximum permissible submersion depth, as well as a selected structural material.
Źródło:
Polish Maritime Research; 2012, 2; 11-16
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary Designing Method of External Pressure Vessels for Sea Subsurface Applications
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/259248.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
subsurface buoy mooring systems
external pressure vessels
Opis:
This paper describes a unique engineering method intended for the preliminary designing of marine echo-location systems. The solved designing problem consists in determining geometrical parameters and selecting structural materials for a vessel of a buoyancy necessary to contain measuring instruments of a given mass, as well as its maximum gabarites and operational submersion depth. The assumed variability range of the system’s parameters determines a space of permissible applicability parameters of the method. Stress level related to permissible and critical stresses was assumed to be safety criterion for the vessel. The method may be applied also to solving converse problems consisting in determining maximum permissible submersion depth for a vessel made of assumed structural materials and having given geometrical parameters. The presented description of the method is illustrated by an example of its application.
Źródło:
Polish Maritime Research; 2010, 2; 3-9
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for predicting propeller-hull interaction, applicable to preliminary design of inland waterways ships
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/260344.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
design of inland waterways ships
selection of propulsion system parameters
characteristics of propeller – hull interaction
Opis:
This paper presents a proposal of a parametric method for predicting the characteristics of wake fraction, w(x) and thrust deduction, t( ) x , of ship hull of the draught close to waterway depth. The method makes it possible to take into account an influence of low waterway depth in preliminary selecting propulsion system parameters of ships intended for operating in shallow waters, e.g. of inland waterways ships. The mathematical model of the problem was determined with taking into account the aspect of coding easiness of calculation algorithm to be applied to computer software useful in computer aided design. Application of the method was demonstrated with the use of the example characteristics of the passenger ship intended for operating in shallow waters on Berlin-Kaliningrad route, whose design was elaborated in the frame of the EU Eureka INCOWATRANS E!3065 project.
Źródło:
Polish Maritime Research; 2006, S 2; 80-84
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for selection of parameters of ship propulsion system fitted with compromise screw propeller
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/260378.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
design of inland waterways ships
ship propellers
ship propulsion
Opis:
This paper concerns an algorithmic method for preliminary selection of parameters of ship propulsion system fitted with fixed screw propeller in the case when the ship’s operation is associated with significant changes of waterway depth and width, hull resistance of the ship and its service speed. Mathematical model arguments of the considered design problem are main ship design parameters identified in the preliminary design stage. Structure of the formulated model complies with formal requirements for continuous- discrete mathematical optimization problems. The presented examples of application of the method concern an inland waterways ship fitted with compromise screw propeller optimized in the sense of minimization of fuel consumption for passing a given route distance within a given time. The elaborated method may be especially useful in designing such ships as : coasters, inland waterways ships, tugs, pushers, trawlers, mine sweepers, icebreakers etc.
Źródło:
Polish Maritime Research; 2007, 4; 3-9
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A design concept of ecological tourist – passenger ship intended for Berlin-Królewiec (Kaliningrad) inland waterway service
Autorzy:
Hołówko, W.
Michalski, J. P.
Rosochowicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/260504.pdf
Data publikacji:
2006
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship designing
inland waterways ships
passenger ships
Opis:
This paper presents a design concept of a novel passenger segment ship intended for navigating on Berlin- -Królewiec (Kaliningrad) inland waterway route, characteristic of application novel structural materials and engineering processes which make it possible to design structures in an innovative way and provide high operational merits for inland waterways ship. Conceptual, functional and technical assumptions for the designed ship as well as its service program was described. Exceptional features of the designed ship are : the general architectural concept which makes the ship free passing under small-clearance bridges and navigating in narrow and shallow waterways, possible, manufacturing technology of its hull structure made of „sandwich” panels as well as its combustion-electric engine (or combustion-hydraulic engine) propulsion system working on alternative ecological gas fuels.
Źródło:
Polish Maritime Research; 2006, S 2; 5-9
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 53

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