Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "watercraft" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-7 z 7
    Tytuł:
    Śródlądowe jednostki pływające w dawnych księgach inwentarzowych zakonu krzyżackiego
    Inland watercraft in old inventory books of the Teutonic Order
    Autorzy:
    Radoch, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2050141.pdf
    Data publikacji:
    2021-11-05
    Wydawca:
    Instytut Północny im. Wojciecha Kętrzyńskiego w Olsztynie
    Tematy:
    rybołówstwo
    średniowiecze
    zamek krzyżacki
    jednostki pływające
    transport wodny
    fishing
    water transport
    Middle Ages
    watercraft
    Teutonic castle
    Opis:
    W świetle dawnych ksiąg inwentarzowych zakonu krzyżackiego w okresie od II poł. XIV w. do 1525 r. zamki w Prusach w transporcie wodnym (po rzekach, zalewach i jeziorach) wykorzystywały następujące jednostki pływające: • wielokrotnie statki – najczęściej nasady (nasuty), w mniejszym stopniu szkuty, korabiki, dubasy, burdyny, lichtany czy też statki dejmskie i wiślane, a także wyspecjalizowane w określonych zadaniach (rybackie, do przewozu pożywienia, drewna, wozów i dział oraz służby); • często promy i tratwy; • bardzo często rozmaite łodzie (rzeczne, wiślane, rybackie, eskortujące, przewozowe, szeląg, kilówka).
    In the light of the old inventory books of the Teutonic Order from the 2nd half of 14th century until 1525, castles in Prussia used the following watercraft for their water transport (rivers, lagoons and lakes): • often ships – in most cases nasady (nasuty) boats, less often punts, korabik-type vessels, dubas boats, burdyna-type, lichtany-type or Dejma and Vistula ships, along with specialist vessels (fishing boats, vessels to transport food, wood, carts, cannons and people); • often ferries and rafts; • often various boats (inland, Vistula, fishing, escorting, transporting, szeląg boats, keel boats).
    Źródło:
    Komunikaty Mazursko-Warmińskie; 2021, 313, 3; 365-403
    0023-3196
    2719-8979
    Pojawia się w:
    Komunikaty Mazursko-Warmińskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An electric ring thruster as auxiliary manoeuvring propulsion system for watercraft - construction analysis
    Autorzy:
    Matuszewski, L.
    Falkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/963464.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    electric motor
    steering
    magnetism
    ferrofluid seals
    Opis:
    The reported project aimed at examining properties and purposefulness of use of modern electromagnetic bearings for a screw propeller in a prototype version of a synchronous ring motor with rare earths magnets. Bearings of this type generate electromagnetic forces which keep the rotor in a state of levitation. The rotating machine with magnetic bearings can work in any environment which reveals diamagnetic properties (air, vacuum, water, liquid gases, etc.). However, a basic quality of the magnetic bearings is elimination of cooling installation and lubrication, which is necessary for proper operation of rotating machines with rolling and slide bearings, undergoing wear with time. Therefore the lifetime of the machine supported on magnetic bearings is incomparable with others. Also torque losses on this bearing are the smallest, compared to all known types of bearings. Ring thrusters can be used as the main drive for relatively small sea-going and inland vessels, and as manoeuvring drive for ships of arbitrary size, especially for AES (All Electric Ship) type vessels. This type of propeller is extremely useful for any types of abyssal vessels, autonomous and remotely controlled, and on submarines. It can also be used as effective generator of electric current for charging batteries in towing trains, barges for instance. The project consisted of three research tasks: 1. Designing, manufacturing and examination of a magnetic bearing on-line controlled by a digital controller, 2. Manufacturing a model of a ring thruster and examination of characteristics of a propeller mounted in the ring, 3. Examining the ferrofluid seal. A concept of the new thruster is a consequence of investigations carried out in Poland upon propellers and magnetic bearings in years 2001-2005.
    Źródło:
    Polish Maritime Research; 2007, S 1; 62-66
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nadprzewodnikowe maszyny elektryczne w napędach jednostek pływających
    Superconducting electric machines in watercraft
    Autorzy:
    Janowski, T.
    Kondratowicz-Kucewicz, B.
    Wojtasiewicz, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373405.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    maszyna elektryczna
    nadprzewodnikowe maszyny elektryczne
    nadprzewodniki wysokotemperaturowe
    napęd jednostek pływających
    Opis:
    Superconductors, especially high temperature superconductors (HTS) are used in electric machines. Superconducting generators and motors have smaller mass and overall dimensions in comparison to conventional machines. Because of these specific quality that solutions are interested for ship propulsion applications. Current density in HTS superconducting winding may be two orders of magnitude higher than in copper windings, which allows to reach two times higher magnetic field density in the gap of synchronous machine, even without iron in the rotor and slots in the stator of the motor. Such design of synchronous machine can substantially reduce the distortion of current and voltage waveforms, as well as the acoustic effects. The construction without iron in rotor and higher magnetic induction makes the superconducting machine, with cooling system, several times lighter than conventional ones. The electric machines could be used in ships and airplanes where smaller dimensions and weight of propulsion equipment results in growth of ship displacement and cargo space. In ship propulsion supplied by generator with frequency converter, high speed generators e.g. 16 000 rpm (800 Hz) and low speed motors e.g. 230 rpm (115 Hz) are preferred for big weight decreasing. Paper presents basic knowledge about superconductors, the construction principles of electric superconducting devices and the examples of generators and motors with HTS winding. The parameters of these superconductor generators and motors were described too.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2009, 83; 161-166
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laser doppler vibrometer based examination of the efficiency of introducing artificial delaminations into composite shells
    Autorzy:
    Kustroń, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/260221.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    watercraft hull
    laminate
    artificial delamination
    SHM diagnostics
    advisory expert system knowledge base
    Opis:
    During its operation, the laminate shell of the watercraft hull can be exposed to local stability losses caused by the appearance and development of delaminations. The sources of these delaminations are discontinuities, created both in the production process and as a result of bumps of foreign bodies into the hull in operation. In the environment of fatigue loads acting on the hull, the delaminations propagate and lead to the loss of load capacity of the hull structure. There is a need to improve diagnostic systems used in Structural Health Monitoring (SHM) of laminate hull elements to detect and monitor the development of the delaminations. Effective diagnostic systems used for delamination assessment base on expert systems. Along with other tools, the expert diagnostic advisory systems make use of the non-destructive examination method which consists in generating elastic waves in the hull shell structure and observing their changes by comparing the recorded signal with damage patterns collected in the expert system database. This system requires introducing certain patterns to its knowledge base, based on the results of experimental examinations performed on specimens with implemented artificial delaminations. The article presents the results of the examination oriented on assessing the delaminations artificially generated in the structure of glass- and carbon-epoxy laminates by introducing local non-adhesive layers with the aid of thin polyethylene film, teflon insert, or thin layer of polyvinyl alcohol. The efficiency of each method was assessed using laser vibrometry. The effect of the depth of delamination position in the laminate on the efficiency of the applied method is documented as well.
    Źródło:
    Polish Maritime Research; 2015, 3; 75-82
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Automatic watercraft recognition and identification on water areas covered by video monitoring as extension for sea and river traffic supervision systems
    Autorzy:
    Wawrzyniak, N.
    Stateczny, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/258942.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    ship identification
    unconventional crafts
    video monitoring
    SOA systems
    Opis:
    The article presents the watercraft recognition and identification system as an extension for the presently used visual water area monitoring systems, such as VTS (Vessel Traffic Service) or RIS (River Information Service). The watercraft identification systems (AIS - Automatic Identification Systems) which are presently used in both sea and inland navigation require purchase and installation of relatively expensive transceivers on ships, the presence of which is not formally required as equipment of unconventional watercrafts, such as yachts, motor boats, and other pleasure crafts. These watercrafts may pose navigation or even terrorist threat, can be the object of interest of the customs, or simply cause traffic problems on restricted water areas. The article proposes extending the traffic supervision system by a module which will identify unconventional crafts based on video monitoring. Recognition and identification will be possible through the use of image identification and processing methods based on artificial intelligence algorithms, among other tools. The system will be implemented as independent service making use of the potential of SOA (Service Oriented Architecture) and XML/SOAP (Extensible Markup Language/Simple Object Access Protocol) technology.
    Źródło:
    Polish Maritime Research; 2018, S 1; 5-13
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Środki działania Straży Granicznej
    Autorzy:
    Warmiński, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/121203.pdf
    Data publikacji:
    2011
    Wydawca:
    Towarzystwo Wiedzy Obronnej
    Tematy:
    Straż Graniczna
    środki działania
    rozpoznanie graniczne
    kontrola graniczna
    grupa pościgowa
    środki prewencyjne
    jednostka pływająca
    środki edukacyjno-wychowawcze
    border guards
    means of action
    border diagnosis
    border control
    pursuit group
    preventive measures
    watercraft
    educational measures
    Źródło:
    Wiedza Obronna; 2011, 1; 106-120
    0209-0031
    2658-0829
    Pojawia się w:
    Wiedza Obronna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A generative approach to hull design for a small watercraft
    Autorzy:
    Karczewski, Artur
    Kozak, Janusz
    Powiązania:
    https://bibliotekanauki.pl/articles/32917891.pdf
    Data publikacji:
    2023
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    method
    generative design
    yacht
    optimisation
    genetic algorithm
    Opis:
    In the field of ocean engineering, the task of spatial hull modelling is one of the most complicated problems in ship design. This study presents a procedure applied as a generative approach to the design problems for the hull geometry of small vessels using elements of concurrent design with multi-criteria optimisation processes. Based upon widely available commercial software, an algorithm for the mathematical formulation of the boundary conditions, the data flow during processing and formulae for the optimisation processes are developed. As an example of the application of this novel approach, the results for the hull design of a sailing yacht are presented.
    Źródło:
    Polish Maritime Research; 2023, 1; 4-12
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies