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Wyszukujesz frazę "manoeuvrability" wg kryterium: Wszystkie pola


Tytuł:
Application of artificial neural networks to assessment of ship manoeuvrability qualities
Autorzy:
Abramowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/258896.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
neural networks
ship manoeuvrability qualities
Opis:
This paper presents an attempt to applying neural networks for assessment of parameters of standard manoeuvrability tests, i.e. circulation test and zig-zag test. Methodological approach to application of neural networks as well as applied network structures and neuron activation functions are generally presented. Also, results of simulations performed by means of the elaborated networks are given in comparison with test cases selected at random. In order to analyze and reveal general trends, correlation relationships between results from network simulations and test cases were calculated and are presented as well.
Źródło:
Polish Maritime Research; 2008, 2; 15-21
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind effect simulation system in model tests of ship manoeuvrability
Autorzy:
Bednarek, A.
Jóźwiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/258700.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship manoeuvrability
wind
wind effect simulation
Opis:
Dependence on hydro-meteorological conditions in the test area is an “Achilles’ heel” of physical experiment used for assessment of ship manoeuvrability. Aerodynamic forces and moments generated on the ship upperworks distort significantly the measured values. The paper presents new testing tool in the form of physical simulation of wind effect enabling quantitative evaluation of distortion of the measurement results. Another feature of the system enabling compensation of real atmospheric conditions prevailing during the experiment is also presented. The wind effects simulation arrangement includes board data acquisition and processing system, automatic control system and executive system consisting of industrial fans.
Źródło:
Polish Maritime Research; 2007, S 2; 64-67
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model tests of the resistance, propulsion and manoeuvrability of ships in the Experimental Centre in Ilawa
Autorzy:
Welnicki, W.
Powiązania:
https://bibliotekanauki.pl/articles/260211.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
resistance
propulsion
manoeuvrability
ships
Opis:
Paper presents the development of resistance, propulsion and steering quality model tests carried out on lake. Such pioneering investigations began in 1956 and were gradually improved and extended. Original equipment and measurement methods were developed. The paper presents those research methods and techniques,and also accuracy of the results, in a historical perspective. Described are also several most important research programmes accomplished in the Centre.
Źródło:
Polish Maritime Research; 2007, S 2; 8-12
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and Evaluation of Manoeuvrability Characteristics of Polish Ferries m/f „Polonia” and m/f „Gryf”
Autorzy:
Szymoński, M.
Powiązania:
https://bibliotekanauki.pl/articles/116942.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Ship Manoeuvrability, Polish Ferry m/f „Polonia”
Polish Ferry m/f Gryf
Ystad Harbour
Wind Force, Manoeuvrability Characteristics
Pilot Navigation
Port Manoeuvrings
Opis:
The paper describes some specific manner of M/F “Polonia” manoeuvring at the Ystad harbour where she is regarded to be “over maximal ship” and also M/F “Gryf” manoeuvring at Trelleborg, taking part into consideration the effect of wind pressure into the ship’s superstructures and houses.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 515-518
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Manoeuvring characteristics of the push train with an auxiliary steering device
Autorzy:
Abramowicz-Gerigk, T.
Burciu, Z.
Powiązania:
https://bibliotekanauki.pl/articles/246386.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
inland push train manoeuvrability
manoeuvrability criteria
bow rotor
Opis:
The carried out and planned studies on the revitalisation of Odra and Vistula rivers in Poland and restoration of regular inland navigation put a great attention into environmental issues related to the operation of inland waterborne transport means. The design and operational parameters of inland ships and convoys are dependent on waterways dimensions and their influence on the environment. The article presents problems related to manoeuvring performance of the push train, which is the most popular inland waterborne means of freight transport in Poland and in Europe. The alternative auxiliary steering device improving push train manoeuvrability has been tested on the physical model of a push barge. The active bow steering device consisted two bow rotors has the influence on the operational safety of the push train with respect to improved manoeuvring characteristics and decreased impact on the environment, port and lock facilities, ships and boats in narrow passages. The results of model tests presented in the article allowed for estimation of turning ability of the push train with and without bow rotors. A significant difference was observed with respect to the manoeuvring area, distances of advance, tactical diameter, and time of the manoeuvre.
Źródło:
Journal of KONES; 2018, 25, 2; 7-13
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Propozycja poprawy manewrowości czołgu Twardy
Proposal to improve manoeuvrability of Twardy battle tank
Autorzy:
Mysłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/347342.pdf
Data publikacji:
2014
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
czołgi
PT-91 Twardy
silniki czołgowe
manewrowość
battle tanks
tank engines
manoeuvrability
Opis:
W artykule przedstawiono podstawowe parametry charakteryzujące manewrowość oraz dokonano przeglądu współczesnych czołgów z punktu widzenia parametrów świadczących o tych właściwościach. Na tle innych czołgów średnich pokazano parametry czołgu Twardy. Na podstawie badań własnych dotyczących elastyczności spalinowych silników wysokoprężnych zaproponowano możliwości poprawy parametrów silnika czołgu Twardy w ten sposób, by nie przekracza-no jego obciążeń cieplnych i mechanicznych. Rozwiązanie to ma a jednocześnie służyć poprawie jego manewrowości przy względnie niewysokim nakładzie pracy. Przedstawiono jego wpływ na parametry napełnienia silnika oraz zadymienie spalin.
The article presents the basic parameters characterizing manoeuvrability and provides an over-view of modern battle tanks from the point of view of parameters proving these properties. The author compares the parameters of other medium battle tanks to the ones of the Twardy battle tank. On the basis of own research on flexibility of diesel engines, the author suggests how to improve engine parameters of the Twardy battle tank in such a way so as not to exceed its ther-mal and mechanical loads. The solution is at the same time to serve to improve its manoeuvra-bility at relatively small effort. The article also presents its impact on engine performance and exhaust fumes smokiness.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2014, 1; 150-160
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some effects of wind on ship’s manoeuvrability
Autorzy:
Szymoński, M.
Powiązania:
https://bibliotekanauki.pl/articles/117192.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
ship’s manoeuvrability
effects of wind
wind resistance
wind speed
windage area
wind pressure force
manoeuvring characteristics
dynamic parameters
Opis:
All ships experience an air and wind resistance while under way of sea, and they may experience adverse effects on wind while manoeuvring in harbours and limited waterways. The wind resistance is proportional to relative wind speed squared, wind direction and the projected windage area of the ship. The paper describes the effect of wind pressure into the ship’s superstructures and houses on ship manoeuvrability, in the range of the wind speed, for the ship which is with the large windage area. The above is one of the recommended information to be included in the ship’s manoeuvring booklet, as per IMO Resolution A.601(15). In sea practice, the manoeuvring characteristics in wind, as wind forces and moments, course-keeping limitation, and drifting under wind influence are fare from these estimated. The results obtained during the several years of practice in ship’s exploitation are included in this paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 3; 623-626
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wind influence on ship manoeuvrability – a turning circle analysis
Autorzy:
Novaselic, M.
Mohovic, R.
Baric, M.
Grbić, L.
Powiązania:
https://bibliotekanauki.pl/articles/1841564.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
shipm anoeuvrability
turning circle
Safety at Sea
vessel trajectory
wind influence
wind force
manoeuvrability characteristics
ship's turning
Opis:
Ship manoeuvrability is a wide term which consist of number of various parameters. Knowing the influence of these parameters on ship manoeuvrability is a first condition to ensure and maintain safe navigation. However, many of these parameters are external forces and, in some cases, cannot be calculated and prediction may be complicated. Analysing the influence of external forces can give as an insight into ship manoeuvrability when such external force occurs. The main purpose of this paper is to analyse the influence of wind on ship manoeuvrability. The best way to make such analysis is during turning circle because in this case wind acts in all 360°. Analysis is made using empirical equations and in situ with the real vessel. The results provide the better understanding of vessel trajectory and show that in some cases vessel may respond in unexpected manner.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 47-51
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Adaptation of an Algorithm of Search and Rescue Operations to Ship Manoeuvrability
Autorzy:
Kasyk, L.
Pleskacz, K.
Powiązania:
https://bibliotekanauki.pl/articles/116946.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
search and rescue (SAR)
Ship Manoeuvrability
Algorithm
Search and Rescue Operations
Hydrometeorological Conditions
IAMSAR
SAR Action Algorithm
ECDIS
Opis:
This article presents an overview of an algorithm to facilitate action when planning search and rescue operations, taking into account actual hydro-meteorological conditions and the maneuverability of ships involved in the search.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 2; 265-268
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of vessel simulation model compatibility with its equivalent in reality
Autorzy:
Zwolan, P.
Czaplewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/320468.pdf
Data publikacji:
2013
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
simulation
mathematical modelling
manoeuvrability
Opis:
Complex simulation systems are often used in order to enhance the safety level on newly designed navigation areas and to facilitate their verification process. The application of these systems supersedes older methods based on manoeuvring basins, wherein models minified in particular scales were used. Modern methods are definitely cheaper and require less work. The paper presents the method of assessment of the compatibility of a ship simulation model with its real counterpart. Access to the simulator’s components responsible for creating and editing bodies of water as well as ship models gives the possibility of their verification. Using cutting-edge navigation systems such as inertial systems, weather stations and GPS gives the possibility of obtaining indispensable information about ship’s behaviour under certain hydro-meteorological conditions.
Złożone systemy symulacyjne są często używane dla poprawy poziomu bezpieczeństwa na etapie projektowania nowej infrastruktury nawigacyjnej, jak również dla ułatwienia procesu ich weryfikacji. Stosowanie tych systemów zastępuje starsze metody oparte na pomniejszonych modelach fizycznych i basenach modelowych, w których je testowano. Nowoczesne metody są zdecydowanie tańsze i wymagają mniej pracy. Artykuł przedstawia metodę oszacowania zgodności modelu symulacyjnego statku z jego rzeczywistym odpowiednikiem. Dostęp do komponentów symulatora odpowiedzialnych za tworzenie i modelowanie akwenu oraz modele statku daje możliwość ich sprawdzania. Jest to możliwe dzięki użyciu najnowszych systemów nawigacyjnych, takich jak systemy inercjalne, stacje meteorologiczne i GPS, które umożliwiają otrzymywanie niezbędnej informacji o zachowaniu się statku w konkretnych warunkach hydrometeorologicznych.
Źródło:
Annual of Navigation; 2013, 20; 163-170
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conceptual and aerodynamic study of a highlymanoeuvrable jet trainer
Autorzy:
Kubrynski, K.
Powiązania:
https://bibliotekanauki.pl/articles/245019.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aerodynamics
aerodynamic project
high angle of attack
manoeuvrability
aircraft design
Opis:
The article discusses the initial study of the two-seat jet trainer with high manoeuvrability. The study included the concept of structural layout of the aircraft, as well as the development of its aerodynamics. The mail aim was to ensure the correct airplane characteristics (in particular control efficiency and dynamic properties) in the wide range of angles of attack. Another challenge was to ensure adequate aerodynamic characteristics at high transonic speed range. The geometry of the aircraft has been developed using CAD system (Simens NX). Initial aerodynamic study and aerodynamic design of the plane were performed using both: the low speed wind tunnel tests performed at Warsaw University of Technology using six-component internal balance and computational work performed using ANSYS CFX computer system. The first was used mainly to check characteristics at high angles of attack. Modifications of the wind tunnel model geometry at this stage were performed using the plastic mass (plasticine), or replacing some components of the model. An important problem with such approach was the lack of a precise definition of the revised geometry in the CAD system. Computational study was performed mainly to check high-speed characteristics. The final geometry of the modified wind tunnel model generally meets the requirements.
Źródło:
Journal of KONES; 2016, 23, 4; 245-252
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bank effect and operation of inland waterways vessels
Autorzy:
Kobyliński, L.
Powiązania:
https://bibliotekanauki.pl/articles/359620.pdf
Data publikacji:
2014
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
inland waterways shipping
bank effect
ship manoeuvrability
training in ship handling
Opis:
Inland waterways vessels operate in waters of restricted depth and restricted width with cross-section of the waterway of different profile. These conditions affect hydrodynamic forces acting on the vessel and in consequence they affect their operation. There are several hydrodynamic effects present in inland waterways. Restricted depth and cross-section of the canal or river affects resistance of the vessel and hydrodynamic characteristics of the propeller and in consequence propulsive efficiency. Another effect is caused by modification of pressure distribution around vessel body resulting in change of draft, so called squat. Finally in narrow fairway lateral forces on the vessel are created and in case of non-symmetrical position of the vessel, those forces are also non-symmetric and causing that the vessel is pushed to one side. This affects safe handling of the vessel and requires understanding and skill of operator. This problem is discussed in the paper.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 37 (109); 50-55
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method to increase maneuverability of pilot-training jet aircraft
Autorzy:
Wiśniowski, W.
Gnarowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/244363.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
jet aircraft
aircraft manoeuvrability
Fowler flap
aerodynamic slots
Opis:
The article presents the positive results of the works performed at the Institute of Aviation in Warsaw, associated with modernization of a highly manoeuvrable training jet aircraft to make it reach the standards of increased manoeuvrability. It is shown how the maximum increase of a standard training aircraft manoeuvrability was achieved, which was the result of a small modification of the structure, along with the minimal costs of modernization and qualification tests. The paper also presents the basic process of modernization related to the development of iterative methodology, which includes numerical selection of mechanization elements, that is, strakes, slots and flaps. The parameters of the performed aerodynamic model are demonstrated as well as the results of the tests of its properties with the selected types of strakes conducted in a low-cost aerodynamic tunnel of 1.5 m diameter with the use of a sixelement aerodynamic weight. Parameters of the selected type of strake model with Fowler flap and slots are shown, as well as the results of the tests performed on it in the aerodynamic tunnel of 5 m diameter, and also the results of the buffeting resistance tests conducted in a transonic tunnel. The paper also presents the parameters of the designed optimized strakes, flaps and slots in 1:1 scale, which were mounted onto the aircraft prototype. Finally, the article presents the results of the full cycle of in-flight tests, which confirmed the anticipated project objectives and obtaining of a significant increase in the aircraft manoeuvrability by 48%.
Źródło:
Journal of KONES; 2016, 23, 3; 563-570
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the Last Moment Manoeuvre for Collision Avoidance Using Standarts for Ships Manoeuvrability
Autorzy:
Koszelew, J.
Wołejsza, P.
Powiązania:
https://bibliotekanauki.pl/articles/320522.pdf
Data publikacji:
2017
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
collision
COLREG
decision support system
Opis:
The paper presents a concept of the new algorithm solving Last Moment Manoeuvre problem. Last Moment Manoeuvre means that action taken only by one vessel is not enough to avoid collision. This is why both vessels have to synchronize their manoeuvres to pass each other. The main focus of the proposed solution is concentrated on the procedure defining the best possible manoeuvre for each vessel when avoiding a collision is no longer possible. For simplification, the assumption that the parameters of the vessels involved in the Last Moment Manoeuvre meet Standards for Ships Manoeuvrability set out in the IMO resolution, will be adopted. The algorithm presented in the paper will be implemented and tested in the commercial system.
W artykule przedstawiono nowy algorytm rozwiązania, tzw. manewru ostatniej chwili. Pod tym pojęciem autorzy rozumieją manewr, gdy działania podjęte przez tylko jeden statek nie zapewnią uniknięcia kolizji. Dlatego oba statki muszą zsynchronizować swoje manewry, by minąć się bezpiecznie. Istota zaproponowanego rozwiązania sprowadza się do procedury definiującej optymalny manewr dla każdego statku, zapewniając jednocze-śnie zapobieżenie kolizji. Dla uproszczenia przyjęto założenie, że jednostki spełniają standardy dla sterowności statków ustanowione w rezolucji IMO. Zaproponowany algorytm będzie implementowany i przetestowany w systemie oferowanym komercyjnie.
Źródło:
Annual of Navigation; 2017, 24; 301-313
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł

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