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    Tytuł:
    Estimation of wind parameters on flying objects
    Estymacja parametrów wiatru na obiektach latających
    Autorzy:
    Dąbrowski, W.
    Popowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/276654.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    pomiary
    estymacja
    prędkość i kierunek wiatru
    prędkość względem powietrza
    kurs
    kąt drogi
    prędkość podróżna
    measurement
    estimation
    wind speed and direction
    airspeed
    heading
    track over Ground
    route speed
    Opis:
    W artykule przedstawiono propozycję pomiaru i estymacji parametrów wiatru na dowolnym obiekcie latającym. W systemie tym wykorzystano trzy źródła informacji: pomiar kursu (układ kursowy lub układ odniesienia pionu i kierunku AHRS), pomiar prędkości względem powietrza (prędkościomierz ciśnieniowy) oraz pomiar kąta drogi i prędkości podróżnej za pomocą odbiornika GPS. Weryfikacja podanego rozwiązania została przeprowadzona w oparciu o wykonane w trybie off-line obliczenia na podstawie danych z lotu samolotu PZL M-20 Mewa oraz na podstawie przeprowadzonej analizy błędów.
    The article presents proposal of wind parameters measurement and estimation on any flying object board. This system uses three sources of information: heading measurement (heading system or attitude heading reference system, AHRS), measurement of speed relative to air (pressure speedometer), estimation of track over Ground and route speed by means of GPS receiver. Verification of the presented solution was carried out based on oa-line calculations using data logged on-board of PLZ M-20 Mewa airplane as well as on the results of error analysis.
    Źródło:
    Pomiary Automatyka Robotyka; 2013, 17, 2; 552-557
    1427-9126
    Pojawia się w:
    Pomiary Automatyka Robotyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction of ship's speed through ground using the previous voyage's drift speed
    Autorzy:
    Yamane, D.
    Kano, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201461.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    machine learning
    weather routing
    ship's speed estimation
    drift speed
    algorithm
    route planning
    tidal current
    Opis:
    In recent years, 'weather routing' has been attracting increasing attention as a means of reducing costs and environmental impact. In order to achieve high-quality weather routing, it is important to accurately predict the ship's speed through ground during a voyage from ship control variables and predicted data on weather and sea conditions. Because sea condition forecasts are difficult to produce in-house, external data is often used, but there is a problem that the accuracy of sea condition forecasts is not sufficient and it is impossible to improve the accuracy of the forecasts because the data is external. In this study, we propose a machine learning method for predicting speed through ground by considering the actual values of the previous voyage’s drift speed for ships that regularly operate on the same route, such as ferries. Experimental results showed that this method improves the prediction performance of ship’s speed through ground.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 129--137
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of wind, wave and loading condition on total resistance and speed of the vessel
    Autorzy:
    Szelangiewicz, T.
    Wiśniewski, B.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/259961.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    optimization of route navigation of the vessel
    vessel’s speed calculation
    Opis:
    Optimising the ship route is one of the most important tasks related to the operation of the vessel, its safety, and economic aspects of transport. Nevertheless, from a mathematical point of view, this problem has not been solved yet sufficiently precisely due to very high complexity of the model to be used to describe the motion of the ship along the shipping line, and time- and space-dependent average values of statistical weather parameters recorded during ship sailing. That is why various approximate methods are used, which, among other procedures, utilize ship speed characteristics, having the form of very simple relations between basic dimensions of the ship and the expected speed decrease at the assumed weather parameters. The paper presents a new method of calculating the speed decrease depending on technical and operating parameters of a given vessel. A computer code prepared based on this method is used for research on forecasting ship speed in real weather conditions.
    Źródło:
    Polish Maritime Research; 2014, 3; 61-67
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of the mean long-term service speed of transport ship. Part. I. Resistance of ship sailing on regular shipping route in real weather conditions
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260107.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship service speed
    wind
    waving
    shipping route
    service margin
    long-term prediction
    Opis:
    Service speed obtainable by a ship in real weather conditions when sailing on a given shipping route, is one of the major parameters which have great impact on ship operation costs. The so far used, very approximate method of service speed prediction based on “service margin”, is very little exact. In this paper a new method based on additional ship resistance dependent on mean statistical parameters of wave and wind occurring on a given shipping route, is presented. The mean long-term service speed is calculated on the basis of the calculated additional resistance and the screw propeller and propulsion engine parameters. Also, a new definition of service margin and a way of its calculation is presented apart from the results of the mean service speed calculation depending on ship’s type and size and shipping route.
    Źródło:
    Polish Maritime Research; 2006, 4; 23-31
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of the mean long-term service speed of transport ship. Part II. Service speed of ship sailingon regular shipping route in real weather conditions
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260340.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship service speed
    wind
    waving
    shipping route
    service margin
    long-term prediction
    Opis:
    Service speed obtainable by a ship in real weather conditions when sailing on a given shipping route, is one of the major parameters which have great impact on ship operation costs. The so far used, very approximate method of service speed prediction based on “service margin”, is very little exact. In this paper a new method based on additional ship resistance dependent on mean statistical parameters of wave and wind occurring on a given shipping route, is presented. The mean long-term service speed is calculated on the basis of the calculated additional resistance and the screw propeller and propulsion engine parameters. Also, a new definition of service margin and a way of its calculation is presented apart from the results of the mean service speed calculation depending on ship’s type and size and shipping route.
    Źródło:
    Polish Maritime Research; 2007, 1; 28-32
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Calculation of the mean long-term service speed of transport ship. Part III. Influence of shipping route and ship parameters on its service speed
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260402.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship service speed
    wind
    waving
    shipping route
    service margin
    long-term prediction
    Opis:
    Service speed obtainable by a ship in real weather conditions when sailing on a given shipping route, is one of the major parameters which have great impact on ship operation costs. The so far used, very approximate method of service speed prediction based on “service margin”, is very little exact. In this paper a new method based on additional ship resistance dependent on mean statistical parameters of wave and wind occurring on a given shipping route, is presented. The mean long-term service speed is calculated on the basis of the calculated additional resistance and the screw propeller and propulsion engine parameters. Also, a new definition of service margin and a way of its calculation is presented apart from the results of the mean service speed calculation depending on ship’s type and size and shipping route.
    Źródło:
    Polish Maritime Research; 2007, 2; 27-32
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of bus driving parameters on urban route
    Autorzy:
    Dashadmirov, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/374301.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    autobus
    trasa
    etap
    czas jazdy
    prędkości jazdy
    bus
    route
    stage
    driving time
    driving speed
    Opis:
    The article deals with bus traffic time and speed on stage and route in the whole. The factors affecting bus driving parameters are divided into groups. The factors of significant impact are found in each group. The method of consideration of such factors impact on driving parameters in timetable making, is proposed. The extent of impact of selected factors on bus driving time and speed is studied.
    Źródło:
    Transport Problems; 2011, 6, 4; 79-85
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ship’s operational speed on the planned ocean route in real weather conditions
    Autorzy:
    Szelangiewicz, Tadeusz
    Żelazny, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/27315876.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    ocean route
    ship speed
    weather parameters
    ship propulsion
    trasa oceaniczna
    prędkość statku
    parametr pogodowy
    napęd statku
    Opis:
    While operating the ship, one of the most important tasks is forecasting the ocean route. For this purpose, the speed characteristics of the ship are used, which are used in specialized computer systems and presented in publications. However, published algorithms for speed (or decrease of speed) calculations of a ship in real weather conditions on given routes are very simplified and do not contain all the relevant parameters related to the ship's hull (affecting its resistance when sailing, eg on waves), its propulsion and weather conditions. The article presents its own, more detailed mathematical model of the speed of the ship, and the performed calculations of speed of the ship were compared with the algorithms available in the literature and with the records from the ship's log.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 159-166
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical model for predicting the ship speed in the actual weather conditions on the planned ocean route
    Autorzy:
    Szelangiewicz, Tadeusz
    Żelazny, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/27315862.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    ocean route
    ship speed
    wind
    current
    wave
    ship propulsion
    trasa oceaniczna
    prędkość statku
    wiatr
    prąd
    fale
    siłownie okrętowe
    Opis:
    While operating the ship, one of the most important tasks is forecasting the ocean route. The vessel's speed characteristics are used to predict the route. Commonly used are very simplified algorithms for calculating those characteristics in which only a few basic ship parameters are used. The article presents a more detailed mathematical model for forecasting the speed of the ship in real weather conditions. This model requires more detailed geometric data of the ship and its propulsion (propeller and propulsion engine), but this data is available for operating ships.
    Źródło:
    New Trends in Production Engineering; 2018, 1, 1; 105-112
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mean long-term service parameters of transport ship propulsion system. Part II. Propulsion engine service parameters of transport ship sailing on a given shipping route
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260469.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    thrust
    efficiency and rotational speed of screw propeller
    long-term prediction
    shipping route
    design working point of screw propeller
    Opis:
    During ship sailing on a given shipping route in real weather conditions all propulsion system performance parameters of the ship change along with changes of instantaneous total resistance and speed of the ship. In this paper results of calculations are presented of distribution function and mean statistical values of screw propeller thrust, rotational speed and efficiency as well as propulsion engine power output and specific fuel oil consumption occurring on selected shipping routes. On this basis new guidelines for ship propulsion system design procedure are formulated.
    Źródło:
    Polish Maritime Research; 2007, 4; 47-52
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mean long-term service parameters of transport ship propulsion system. Part I. Screw propeller service parameters of transport ship sailing on a given shipping route
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260360.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    thrust
    efficiency and rotational speed of screw propeller
    long-term prediction
    shipping route
    design working point of screw propeller
    Opis:
    During ship sailing on a given shipping route in real weather conditions all propulsion system performance parameters of the ship change along with changes of instantaneous total resistance and speed of the ship. In this paper results of calculations are presented of distribution function and mean statistical values of screw propeller thrust, rotational speed and efficiency as well as propulsion engine power output and specific fuel oil consumption occurring on selected shipping routes. On this basis new guidelines for ship propulsion system design procedure are formulated.
    Źródło:
    Polish Maritime Research; 2007, 4; 18-23
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accuracy of Sea Ice Data from Remote Sensing Methods, its Impact on Safe Speed Determination and Planning of Voyage in Ice-Covered Areas
    Autorzy:
    Pastusiak, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/116005.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Ice-Covered Area
    Sea Ice Data
    Remote Sensing Method
    Safe Speed Determination
    Route Planning
    Voyage Planning
    Ice Navigation
    Polar Navigation
    Opis:
    The data related to ice floe concentration and ice thickness were analysed. Sources of data have been verified by visual observation and by comparison in between information from different remote sensing sources. The results of this work exceeded initial expectations. The discrepancies of the information provided by various data sources result from the error of the measurement method, which can be as high as 15% of the concentration of ice floes. It should also be borne in mind that the more generalized information about the state of the ice cover, the lower probability of detection of ice floe patches of a high concentration and spatial extent. Each vessel that is planning voyage in ice should take into consideration inaccurate estimation of concentration and thickness of ice floes received by means of satellite remote sensing methods. The method of determining permissible speed of various ice class vessel in ice on basis of safe speed graph for the icebreaker was developed. A well-defined equation approximates relationship between speed of the icebreaker and the vessels of specified ice classes. Average distance of 24.1 Nm from sea ice extent line was related to all analysed lines representing 30-40% ice floe concentration (IUP product excluded) and 30.6 Nm for analysed lines representing 70-81-91% ice floe concentration. The maximal average distance of the furthest analysed line (IUP product excluded) was equal 37.2 Nm. The average standard deviation of that results was equal 8.3 Nm only. Average distances of analysed lines from sea ice extent line to maximal ice data values were found as follow: 8.4 Nm (23%) for NSIDC-CCAR ice age, 12.3 Nm (33%) for minimal distance of 30-40% ice concentration, 15.4 Nm (41%) for OSISAF ice type “ambiguous” zone from Open Water side, 25 Nm (67%) for minimal distance of 70-81-91% ice concentration, 26.6 Nm (72%) for OSISAF ice type “ambiguous” zone from 1st year ice age side, 35.9 Nm (97%) for maximal distance of 30-40% ice concentration and 36.3 Nm (98%) for maximal distance of 70-81-91% ice concentration data. In the parentheses placed relative distances from first ice data including IUP 40% concentration isolines. Sea ice extent of most of available data sources delineated the edge of “area to be avoided” for vessels of ice class lower than L1. Estimated average speed of L3 ice class vessel was from 3.3 knots till 5.2 knots at average speed 5.0 knots. For L1 ice class vessel estimated average speed was from 6.5 knots till 12.1 knots at average speed 9.7 knots. Relative standard deviation of averaged speed for both ice class vessels was equal 18%. The highest relative deviations were found up to 50% below the average speed value. The highest relative deviations upward were equal 22%. Above speeds for L3 and L1 ice class vessels corresponded well with average technical speed of “Norilsk SA-15” ULA class vessel equal 12,6 knots. The results of the work were not intended to be used for decision making on spot - “on-scene” - during direct guiding vessel in ice. They should be useful for initial voyage planning to allow decision-makers to identify the best freely available data sources for considered voyage and vessel of defined ice class; to understand advantages and limitations of available in the internet data sources; to estimate vessel’s maximal safe speed in encountered ice conditions, to estimate spatial distribution and correlations in between various levels of sea ice concentration and thickness. All above data allow estimate voyage time that is, in addition to fuel consumption, basic criterion of maritime transport economics.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 229-248
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mean, long-term propulsion engine service parameters of a transport ship sailing on a given shipping route
    Średnie, długoterminowe parametry pracy silnika napędowego statku transportowego na linii żeglugowej
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/257054.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
    Tematy:
    napór
    obrót
    sprawność
    śruba
    przewidywanie długoterminowe
    linia żeglugowa
    projekt punktu pracy śruby
    thrust
    efficiency speed
    rotational speed
    screw propeller
    long-term prediction
    shipping route
    design working point of screw propeller
    Opis:
    During ship sailing on a given shipping route in real weather conditions, all propulsion system performance parameters of the ship change along with changes of instantaneous total resistance and speed of the ship. In this paper, the results of calculations are presented of the distribution function and mean statistical values of screw propeller thrust, rotational speed and efficiency as well as propulsion engine power output and specific fuel oil consumption occurring on selected shipping routes. On this basis, new guidelines for a ship's propulsion system design procedure are formulated.
    Podczas pływania statku na danej linii żeglugowej w rzeczywistych warunkach pogodowych, wraz ze zmianami chwilowego całkowitego oporu i chwilowej prędkości eksploatacyjnej zmieniają się parametry pracy układu napędowego. W artykule przedstawiono wyniki obliczeń funkcji rozkładu i średnich statystycznych wartości naporu, obrotów i sprawności śruby oraz mocy i zużycia paliwa silnika napędowego statku na wybranych liniach żeglugowych. Na podstawie wykonanych obliczeń przedstawiono nowe wytyczne do projektowania napędu statku.
    Źródło:
    Problemy Eksploatacji; 2008, 3; 103-111
    1232-9312
    Pojawia się w:
    Problemy Eksploatacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research of influence of small capacity passenger vehicles to work of transport system
    Исследование влияния пассажирских транспортных средств малой вместимости на работу транспортной системы
    Autorzy:
    Boyko, G.
    Tujrin, S.
    Fedotov, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374197.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    taxi route
    conveyance speed
    hourly traffic
    road traffic accident
    exhaust emission
    transport system
    trasa taksówki
    prędkość przenoszenia
    ruch drogowy
    wypadek drogowy
    emisja spalin
    system transportowy
    Opis:
    The task of increase of traffic safety has got a special acuteness for large cities of Russia in connection with expansion of service of passengers of route taxis. In the paper results of research of technical operation’s conditions of route taxis, qualifications and the experience of their drivers are resulted, and also some ways of increase of safety on city routing traffic are offered.
    Задачи повышения безопасности дорожного движения приобрели особую остроту для крупных городов Росси в связи с увеличением обслуживания пассажиров маршрутными такси. В данной работе проведён анализ условий технической эксплуатации маршрутных такси и стажа водителей и их квалификации, а также предложены некоторые пути увеличения безопасности на городских маршрутах.
    Źródło:
    Transport Problems; 2015, 10, 1; 23-30
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mean long-term screw propeller service parameters of transport ship sailing on a given shipping route
    Średnie, długoterminowe parametry pracy śruby napędowej statku transportowego na linii żeglugowej
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/257361.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
    Tematy:
    napór
    sprawność
    obroty
    projektowy punkt pracy
    śruba napędowa
    prognoza długoterminowa
    linia żeglugowa
    thrust
    efficiency
    rotational speed
    screw propeller
    long-term prediction
    shipping route
    design working point
    Opis:
    During ship sailing on a given shipping route in real weather conditions all propulsion system performance parameters of the ship change along with changes of instantaneous total resistance and speed of the ship. In this paper, the results of calculations are presented of the distribution function and mean statistical values of screw propeller thrust, rotational speed and efficiency, as well as propulsion engine power output and specific fuel oil consumption occurring on selected shipping routes. On this basis new guidelines for ship propulsion system design, procedures are formulated.
    Podczas pływania statku na danej linii żeglugowej w rzeczywistych warunkach pogodowych, wraz ze zmianami chwilowego całkowitego oporu i chwilowej prędkości eksploatacyjnej zmieniają się parametry pracy układu napędowego. W artykule przedstawiono wyniki obliczeń funkcji rozkładu i średnich statystycznych wartości naporu, obrotów i sprawności śruby oraz mocy i zużycia paliwa silnika napędowego statku na wybranych liniach żeglugowych. Na podstawie wykonanych obliczeń przedstawiono nowe wytyczne do projektowania napędu statku.
    Źródło:
    Problemy Eksploatacji; 2008, 2; 213-221
    1232-9312
    Pojawia się w:
    Problemy Eksploatacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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