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Wyświetlanie 1-3 z 3
Tytuł:
Design and operational innovations in adapting the existing merchant river fleet to cost-effective shipping
Autorzy:
Abramowicz-Gerigk, Teresa
Burciu, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/260240.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
river convoy capacity
integrated steering system
smart river unit
Opis:
Modernisation of the existing river fleet adapted for the local conditions of the Middle and Lower Vistula can be considered as a solution to slow down the progressive decrease of river transport in this area. The implementation of technical improvements, smart technologies and enhancement of transport performance may partially solve the problem of growing demand for multimodal transport of containers and oversized loads in a shorter perspective than the expected period of planned revitalisation of the river. The paper presents investigations on the modernisation of river convoys adapted to the current navigational conditions of the Lower Vistula. The different options have been discussed by the authors with river fleet operators and the best recognised solution was agreed to be the use of river convoys combining modernised motor barges and the pushed barges previously used in this area. Improvement of the transport profitability, reduction of fuel consumption, air pollution and noise can be achieved at minimum costs by modernisation of the main power-propulsion systems of outdated motor barges and the implementation of innovative steering systems on pushed barges. The demand for power-propulsion and manoeuvring performance of modernised convoys is discussed in the paper.
Źródło:
Polish Maritime Research; 2019, 4; 157-164
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lorry convoy stability taking into account the skew of semitrailer axes
Устойчивость автопоезда с учетом перекоса осей полуприцепа
Autorzy:
Sakhno, V.
Poliakov, V.
Timkov, O.
Kravchenko, O.
Powiązania:
https://bibliotekanauki.pl/articles/961446.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
lorry convoy
truck-tractor
semitrailer
stability
mathematical model
konwój samochodów ciężarowych
ciągnik siodłowy
naczepa
stabilność
model matematyczny
Opis:
The mathematical model of a saddle-type lorry convoy is improved taking into account the skew of the axes of a semitrailer. It is shown that the motion of a lorry convoy without the skew of the axes is asymptotically steady. The skew of any axis of a semitrailer results in the worsening of stability of the rectilinear motion conditioned by the oscillations of the towed link.
Усовершенствована математическая модель седельного автопоезда с учетом перекоса осей полуприцепа. Показано, что движение автопоезда без перекоса осей является асимптотически устойчивым. Перекос любой оси полуприцепа приводит к ухудшению устойчивости прямолинейного движения, обусловленного колебаниями прицепного звена.
Źródło:
Transport Problems; 2016, 11, 3; 69-76
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ice conditions affecting passage of Polish vessels convoy though the NSR in 1956. Long-term ice forecasts and passage strategies
Autorzy:
Pastusiak, T.
Powiązania:
https://bibliotekanauki.pl/articles/117507.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
arctic shipping
ice conditions
Northern Sea Route (NSR)
ice forecast
history of navigation
passage startegies
Polish vessels convoy
ESIMO
Opis:
The goal of the study was to examine ice cover conditions that accompanied the passage of convoy of seven Polish vessels from Europe to the Far East in year 1956, which initiated an international commercial shipping transit. Several different sources of information on the state of ice cover in the Arctic were used in this study. Ice conditions (decisive for ability of a merchant vessel or icebreaker to cross the route) during the following navigational seasons in most of the NSR areas showed extremely divergent results - from the most favorable to the most difficult and vice versa. Existing in years 1940-1957 ice cover conditions and shipbuilding technologies did not guarantee a successful transit passage in one navigation season. The Soviet Union used icebreakers that were not able to lead vessels in heavy ice conditions that occurred in 1950s. The NSR Administration used passive strategy ? waiting for improvement of ice conditions - instead of forcing heavy ice. Passive strategy of navigation through the NSR included wintering and continuation of passage next year when ice conditions improved. Annual variability of ice conditions approximated by third degree polynomial line showed trends well. However, the high annual anomalies of ice conditions in relation to trend line did not allow for effective forecasts on particular sections of the NSR in next navigation season.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 1; 101-106
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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