Efficiency Estimation of Variable Pitch Propeller on Steering Thruster*

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So it may be concluded that the described above mechanism<strong>of</strong> decreasing variable hydrodynamic forces acting onsteering thruster due to the use <strong>of</strong> PSBC will operate successfullyin the mode <strong>of</strong> reverse flow as well, and the abovementioned restrictions both on the speed <strong>of</strong> column rotationand speed <strong>of</strong> propeller rotation will be partially or fully removed.Decreasing <strong>of</strong> time <strong>of</strong> steering thruster rotating for 180 0at crush stopping and removing or minimizing <strong>of</strong> restrictionson power delivered to the propeller will result in shorter way<strong>of</strong> ship stopping and time <strong>of</strong> its full stop and, consequently,in the safety <strong>of</strong> navigation.4. CONCLUSIONig.7. Mode <strong>of</strong> reversing flowAccording to the results obtained with PSBCs mountedon steering thruster it is possible to conclude:– equipping a steering thruster with PBSC will considerablyminimize efforts for its rotation within the range <strong>of</strong>turning (for the pushing type for more then two times);– applying PBSC is an alternative to CPP, which is veryimportant for contra rotating propellers;– use <strong>of</strong> PBSCs for steering thruster is perspective fromthe point <strong>of</strong> improving the reversing characteristics <strong>of</strong> shipi.e.: decreasing <strong>of</strong> the stopping way and saving time necessaryto stop a ship.The last statement needs to be supported by further researchstudies.REERENCESabig.8. Model tests <strong>of</strong> propeller blade hydrodynamicload in reverse flow mode:a – curve <strong>of</strong> action K T– J blades in four quadrants;b – spectrogram <strong>of</strong> blade thrust, III quadrant,n = –15 1/c, J = –0.414 (mode No 8)1. Vishnevsky L.I. <strong>Propeller</strong>s With ree Blade Connections// Problems <strong>of</strong> Ship Hydrodynamics, Krylov ShipbuildingResearch Institute, 1994.2. Vishnevsky L.I., Togunjac A.R. Comparative CavitationCharacteristics <strong>of</strong> <strong>Variable</strong> <strong>Pitch</strong> <strong>Propeller</strong> and ixed<strong>Pitch</strong> <strong>Propeller</strong>s Operated in Non – Uniform low. –Third International Conference” Navy and ShipbuildingNowadays”, NSN 2003, Saint-Petersburg, Russia,2003.3. Âèøíåâñêèé Ë.È., Òîãóíÿö À.Ð. Ñóäîâîé äâèæèòåëü:Ïàòåíò íà èçîáðåòåíèå ¹ 2191136 // Îôèöèàëüíûéáþëë. «Èçîáðåòåíèÿ». – 2002. – ¹ 29. (20.10). –ÂÍÈÈÏÈ.4. Vishnevsky L.I., Krasavtsev V.E., Togunjac A.R. SomeAspects <strong>of</strong> Hydrodynamics <strong>of</strong> Contra – Rotating <strong>Propeller</strong>sWith shifted Blade Connection on the Hub. – 15 thInternational Scientific and Pr<strong>of</strong>essional Congress “TheoryPractice <strong>of</strong> Shipbuilding” SORTA 2002, Trogir,Croatia , 2002.5. Marshall Don S. <strong>Variable</strong> <strong>Pitch</strong> Marine <strong>Propeller</strong>. UnitedStates Patent ¹ 4, 297, 079.6. Âèøíåâñêèé Ë.È., Îãëîáëèí Þ.Ô., Òîãóíÿö À.Ð., ØëÿõòåíêîÀ.Â., Ôîðñò À.À. Ñóäîâàÿ äâèæèòåëüíàÿ óñòàíîâêàòèïà «ïîâîðîòíàÿ êîëîíêà». Ïàòåíò íà èçîáðåò.¹ 2248302. –Áþëë. «Èçîáðèòåíèÿ». – 2005 (20.03). –¹ 8. – ÂÍÈÈÏÈ.7. Togunjac A.R., Kaprancev S.V. Projektiranje i modelskoispitivanje djelotvornosti kontravijka // Brodogradnja42. – 1994. – 2. – Ð.127-133.8. Togunjac A.R. New Designs <strong>of</strong> Propulsions for ishingVessels. Teorija i praksa – Brodogradnje, SORTA-1996, Zagreb, Croatia, 1996.9. Âîéòêóíñêèé ß.È., Ïåðøèö Ð.ß., Òèòîâ È.À. Ñïðàâî÷íèêïî òåîðèè êîðàáëÿ. – Ë.: Ñóäîñòðîåíèå, 1973,ñ. 447.10. Âîéòêóíñêèé ß.È. Ñïðàâî÷íèê ïî òåîðèè êîðàáëÿ. –Ò.1. – Ë.: Ñóäîñòðîåíèå, 1985, ñ. 721-723.92 Ìîðñêîé âåñòíèê ¹ 3(15), 2005
Ïðîáëåìà òðàíñïîðòíîãî îáñëóæèâàíèÿïóíêòîâ ñ íåîáîðóäîâàííûìáåðåãîì, çíà÷èòåëüíàÿ ÷àñòü êîòîðûõðàñïîëîæåíà íà ïîáåðåæüå àðêòè÷åñêèõìîðåé, ïðîäîëæàåò îñòàâàòüñÿ àêòóàëüíîéíà ïðîòÿæåíèè äåñÿòèëåòèé.Àðêòè÷åñêèå ïåðåâîçêè Ðîññèè îñóùåñòâëÿþòìîðñêîé ôëîò, ðå÷íûå ñóäà,ñóäà ñìåøàííîãî ïëàâàíèÿ, æåëåçíîäîðîæíûé,àâòîìîáèëüíûé è âîçäóøíûéòðàíñïîðò. Ó÷èòûâàÿ ãåîãðàôè÷åñêîåîñòðîâíîå ïîëîæåíèå ðÿäà ïóíêòîâñíàáæåíèÿ è ðàñïîëîæåíèå äðóãèõ íàïîáåðåæüå ñåâåðíûõ ìîðåé, èõ ïðèðîäíî-êëèìàòè÷åñêèåóñëîâèÿ è îáúåìûïåðåâîçèìûõ ãðóçîâ, ìîðñêèå ïåðåâîçêè÷àñòî ÿâëÿþòñÿ åäèíñòâåííî âîçìîæíûìëèáî ïðåèìóùåñòâåííûì âàðèàíòîìäîñòàâêè ñíàáæåí÷åñêèõãðóçîâ.Àðêòè÷åñêèå ìîðñêèå ïåðåâîçêèâêëþ÷àþò: òðàíñàðêòè÷åñêèå, òðàíñïîðòèðîâêóïîëåçíûõ èñêîïàåìûõ è ëåñà, äîñòàâêó ãðóçîâ ñíàáæåíèÿ.Ïîòîêè ãðóçîâ ñíàáæåíèÿ ìîæíî óñëîâíî ðàçäåëèòü íàäâå ãðóïïû:– ìåëêîïàðòèîííûå ïåðåâîçêè, âåëè÷èíà êîòîðûõ îñòàåòñÿñòàáèëüíîé â òå÷åíèå ìíîãèõ ëåò (ïåðåâîçêè â áîëüøèíñòâîàðêòè÷åñêèõ ïóíêòîâ);– ïåðåâîçêè, ñâÿçàííûå ñ ãåîëîãîðàçâåäî÷íûìè ðàáîòàìèè îñâîåíèåì ìåñòîðîæäåíèé ïîëåçíûõ èñêîïàåìûõ,äëÿ êîòîðûõ îáúåì ãðóçîïîòîêîâ äîñòèãàåò ñîòåí òûñÿ÷ òîíí.Â äàííîé ñòàòüå ðàññìàòðèâàåòñÿ ïðîáëåìà ïåðâîãî ðîäà.Ïî äàííûì ÖÍÈÈÌÔ, êîëè÷åñòâî ïóíêòîâ ñ íåîáîðóäîâàííûìáåðåãîì Ðîññèè – ïîðÿäêà 100, äëÿ íèõ õàðàêòåðåíóñòîé÷èâûé ãðóçîïîòîê ñ óñòîé÷èâîé ñòðóêòóðîé;ïóíêòû ðàñïîëîæåíû â ñëîæíûõ êëèìàòè÷åñêèõ óñëîâèÿõ.Ðàññìàòðèâàÿ ïóòè ñîâåðøåíñòâîâàíèÿ äîñòàâêè ãðóçîâñíàáæåíèÿ â ïóíêòû ñ íåîáîðóäîâàííûì áåðåãîì (ÏÍÁ)ìîæíî âûäåëèòü äâà íàïðàâëåíèÿ:– ñîçäàíèå íîâûõ òèïîâ ñóäîâ-ñíàáæåíöåâ è ïåðåãðóçî÷íûõñðåäñòâ, ò.å. óñîâåðøåíñòâîâàíèå ñóùåñòâóþùåé ëèíåéíîéñèñòåìû äîñòàâêè ãðóçîâ (ðèñ.1);– îðãàíèçàöèÿ ìàãèñòðàëüíî-ôèäåðíîé ñèñòåìû çàâîçàãðóçîâ, âêëþ÷àÿ äîñòàâêó ãðóçîâ òðàíñïîðòíûìè ñóäàìèâ áàçîâûå ñåâåðíûå ïóíêòû (ìàãèñòðàëüíàÿ ïîäñèñòåìà), èðàçâîç ãðóçîâ ôèäåðíûìè ñíàáæåíöàìè èç áàçîâûõ ïîðòîââ ÏÍÁ, ïî ðàéîíàì òÿãîòåíèÿ (ôèäåðíàÿ ïîäñèñòåìà).Ìåòîä îïòèìèçàöèèñîñòàâà ôèäåðíîãîôëîòà ñíàáæåíèÿàðêòè÷åñêèõ ïóíêòîâñ íåîáîðóäîâàííûìáåðåãîìÃ.Ô. Äåìåøêî, ä-ð òåõí. íàóê, ïðîô.,Â.È. Ìîãèëåâñêèé, èíæ., ÑÏáÃÌÒÓÌàãèñòðàëüíî-ôèäåðíàÿ ñèñòåìà ïîäðàçóìåâàåò:– èñêëþ÷åíèå ðåéäîâîé ïåðåâàëêè ãðóçîâ;– ñîêðàùåíèå ïîòðåáíîñòè â ñóäàõ òðàíñïîðòíîãî ôëîòà;– ïîïîëíåíèå ôëîòà ñóäîâ ôèäåðíûõ ñíàáæåíöåâ,ïðèñïîñîáëåííûõ ê ðàçãðóçêå â óñëîâèÿõ íåîáîðóäîâàííîãîáåðåãà;– âîçìîæíûå êàïèòàëîâëîæåíèÿ â áåðåãîâûå ñîîðóæåíèÿ.Íà ðèñ.1. ïðåäñòàâëåíû äâå ñõåìû äîñòàâêè ãðóçîâ â ÏÍÁ.Ïðåäìåòîì ðàññìîòðåíèÿ è îïòèìèçàöèè ÿâëÿåòñÿ ôèäåðíàÿïîäñèñòåìà ìàãèñòðàëüíî-ôèäåðíîé òðàíñïîðòíîòåõíîëîãè÷åñêîéñõåìû.Âåðáàëüíîå îïèñàíèå ïîñòàíîâêè çàäà÷è. Ïðåäïîëàãàåòñÿñëåäóþùåå:– áàçîâûå ïóíêòû íà Ñåâåðå ñóùåñòâóþò;– ÏÍÁ ðàçäåëåíû íà ãðóïïû òàê, ÷òî â êàæäóþ ãðóïïóãðóçû äîñòàâëÿþòñÿ èç ñîîòâåòñòâóþùåãî áàçîâîãî ïóíêòà;– îáúåìû ïåðåâîçîê îïðåäåëåíû;– ãðóçû ñíàáæåíèÿ âêëþ÷àþò: ãåíåðàëüíûå, îâîùè èôðóêòû, ÃÑÌ, óãîëü;– â êàæäûé ïóíêò òðåáóåòñÿ äîñòàâëÿòü âñå ÷åòûðå âèäàãðóçà;– èìååòñÿ ïîòîê îáðàòíûõ ãðóçîâ èç ÏÍÁ â áàçîâûåïóíêòû;– ÏÍÁ ðàçëè÷àþòñÿ òðåáóåìûì êîëè÷åñòâîì ãðóçîâ;– ÏÍÁ ðàñïîëîæåíû â ðàçëè÷íûõ ãåîãðàôè÷åñêèõ óñëîâèÿõ;à) á)Ðèñ.1. Ãðàôû ëèíåéíîé (à) è ìàãèñòðàëüíî-ôèäåðíîé (á) ñõåì äîñòàâêè ãðóçîâ â ïóíêòû ñ íåîáîðóäîâàííûì áåðåãîì.ìîðñêàÿ òåõíèêà: íàóêà è òåõíîëîãèè¹ 3(15), 2005 Ìîðñêîé âåñòíèê93
Page 1 and 2: 1. INTRODUCTIONThe use of</
Page 3: steering device. In this case the g
Page 7 and 8: Ïîñòðîåíèå íà÷àëüí
Page 9 and 10: ðåíî è íåïîñðåäñòâ
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Page 13 and 14: Ðèñ.2. Çàâèñèìîñòü ÷
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Page 21 and 22: Ñõåìà áîåâîãî èñïî
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Page 25 and 26: Ðèñ. 6. Ïîâåðõíîñòíû
Page 27: ÄÈÍÀÌÈÊÈ ÐÅËÜÅÔÀ Ä

Efficiency Estimation of Variable Pitch Propeller on Steering Thruster*

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