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Wyszukujesz frazę "ship’ dimensions" wg kryterium: Temat


Wyświetlanie 1-5 z 5
Tytuł:
Determination of main dimensions and estimation of propulsion power of a ship
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/244443.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship propulsion
Marine Power Plant
database
ship’ dimensions
Opis:
TEU number, which is the container ships’ crucial designing factor, directly influences the main hull dimensions such as displacement V , length L, breadth B, draught T, their combinations and block coefficient CB. The main dimensions have a great impact on developing the ships resistant performance. Thus, it is really fundamental to establish the correct dimensions of the hull during the design and ship building process. Estimating the shape of the ship’s hull, that comprises its main dimensions, is one of the basic tasks as part of the preliminary design stage. The most significant decisions determining ships performance, its duration and building costs are made at the beginning of the preliminary stage, when the costs are relatively low. It is important to limit the total ship resistance, for instance, by lowering the wave ship resistance as much as possible, especially when the operational speed and TEU number carried by one vessel is increasing. That resistance depends on the operational speed expressed by Froude number. The resistance criteria and the existing hull dimensions limits, resulting from ships route, must be taken into consideration bearing in mind safety conditions such as ships stability and seaworthiness, when the main ships dimensions are being determined. In the paper are presented general rules for calculations of ship’s hull principle dimensions and total power of engines of container ship 1300TEU and 18 kn at preliminary stage of design process.
Źródło:
Journal of KONES; 2014, 21, 2; 39-44
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dimensional constraints in ship design
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/245380.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship principal dimensions
hull volumetric coefficients
hull design
Opis:
The paper presents general rules for calculations of ship’s hull principle dimensions at preliminary stage of design process. There are characterized and defined basic assumptions of design process and limitations for calculations of dimensions and some criteria numbers. Limitations are an outcome of shipping routes what is related to shipping restrictions, diminishing of hull drag, achieving of required strength of hull and safety of shipping requirements. Shipping limitations are because of canals and straits dimensions or harbours drafts. In order to diminish propulsion power, what is related to economically justified solution, selected form and dimensions of hull must ensure minimizing of resistance, including skin friction and wavemaking resistance. That is why proper selection of coefficients of hull shape and dimensional criteria according to ship owner’s requirements i.e. deadweight (DWT) or cargo capacity (TEU), speed and seakeeping. In the paper are analyzed dimensional constraints due to shipping region, diminishing of wavemaking and skin friction resistance or application of Froude Number, ships dimensional coefficients (block coefficient, L/B, B/T, L/H) and coefficients expressing relations between capacity and displacement. The scope of applicability above presented values for different modern vessels construction were analyzed.
Źródło:
Journal of KONES; 2013, 20, 2; 27-32
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilisation of data base in preliminary design of marine power plant
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/244415.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ships propulsion
Marine Power Plant
database
ship’s general dimensions
Opis:
The paper presents general rules of utilization of database, called „significant ships list,” for preliminary design of ship’s propulsion and configuration of power plant. Knowledge collected in the database is related to new buildings classified according to type, displacement, shipping class etc. It encompass general dimensions, characteristics of mobility ,propulsion’s power and type of main engines and propulsors, electric power plant, boilers and main mechanisms of a power plant. In the paper is presented method of utilization of the significant ships list during design of a container ship with capacity of 1300 TEU and speed of 18 knots. The first step of propulsion and main engine’s selection is determination of main dimensions, i.e. displacement, length, draft and breadth. That dimensions cannot be selected random way, due to hull’s mobility, stability and durability constraints. The list of significant ships consisted of 30 units, and amongst them, 17 were selected and analyzed. Others were rejected because of significant difference from mean values what could be due to different class of the ships.
Źródło:
Journal of KONES; 2014, 21, 1; 43-48
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Criteria of similarity in analysis of main dimensions and propulsion power of ships at preliminary stage of design
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/248129.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
shipbuilding
calculation
hull dimensions
ship
propulsive marine power
Opis:
The article presents the methodology of calculation of principal parameters of ship’s hull dimensions, called „significant ships list”, at preliminary stage of design process. Knowledge collected in the database is related to new buildings classified according to type, displacement, or DWT, shipping class, maximum speed etc. Are analysed dimensional constraints due of Froude Number, ships dimensional coefficients block and weigh coefficient, relations of main dimensions such as L/B, B/T, L/H, B/H etc. [7]. Those parameters coming out from ship-owners requirements like type of ship, load capacity, type of cargo, shipping zone, speed and some more. Very helpful tool for such analysis is list of significant ships created for specified types of ships. Mentioned lists are very effective under conditions that cover broad-spectrum new buildings and data included are credible. Uncritical taking values included in significant ships list can lead to critical errors in selection of main dimensions of a ship or its propulsion powering. For that reasons, basing on analysis, as main criteria of similarity of ship’s hull were assumed mass coefficient, block coefficient and Froude Number [2]. That procedure has significant impact at proper estimation of propulsion power. Another reliable parameter of evaluation of power seems to be relation between power and load capacity Ne/D.
Źródło:
Journal of KONES; 2018, 25, 3; 85-91
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of hull’s resistance at preliminary phase of designing
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/246841.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
seagoing ship
hull coefficient
hull dimensions parameters
hull resistance
propulsion power
statek morski
współczynnik kadłuba
wymiary kadłuba
parametry
odporność kadłuba
siła napędowa
Opis:
In this paper are presented the methodology of calculation of hull resistance components, principal parameters of a vessel, necessary for calculation of displacement in relation to vessel’s type. That methodology concerns analysis of designing ways at early stage of ship’s power calculation. Ship owners' preliminary 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. In the paper, are presented major constraints for designing of new vessels coming from ship-owner assumptions such as seafaring limitations and safety of shipping regulations due to Classification Societies Rules or coming out from designing experience. In the paper are presented components of ship’s resistance and methods of total resistance calculations what is a basis for power calculation and propulsion designing. Moreover, are presented results of calculations of resistance components of different types of ships, and variety of displacement and sailing velocity. It has to be assumed, that presented method concerns preliminary design stage and can vary from different ships classes and constructions of hulls.
Źródło:
Journal of KONES; 2017, 24, 1; 77-82
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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