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PONAŠANJE BRODA NA TALASIMA____________________________Ukoliko su ljuljni tankovi nedovoljni,najbolji (i najskuplji) stabilizator suaktivna peraja (active fins)...Postoji i niz drugih stabilizatora:paravani (za ribarske brodove)kormila (za brze brodove,posebno pri naknadnomugrađivanju)aktivni ljuljni tankovi (trenutnopotisnuti)žiroskopi (ponovo)itd...Koriste ih putnički brodovi (kruzeri)...Ratni brodovi (sistem bez uvlačenja)Mega jahte...PREDAVANJA 2009. 247
PONAŠANJE BRODA NA TALASIMA____________________________5.5. OPERATIVNOST BRODAImali smo problem da ocenimo ukupnupomorstvenost broda...da uporedimo kvalitet različitih brodova...To nam omogućava parametar poznat kaooperatinost broda (operability), ili operacionaefikasnost broda...Operativnost broda predstavlja verovatnoću da će,pri iizvršenju zadatka, sve norme pomorstvenostitibiti zadovoljene...Ustvari, verovatnoću da će brod moći da izvršitraženi zadatak...Da bi se odredila operativnost broda potrebnoje, prvo, proračunati č pojedine jdi karakteristike kt tikljuljanja u funkciji visine talasa...i odrediti stanje mora (visinu talasa) na komebrod dostiže maksimalno dozvoljene vrednosti(norme) ovih karakteristika ljuljanja...Zatim, na osnovu dugoročne statistikestanja mora...treba odrediti verovatnoću dostizanjabaš one visine talasa na kojima broddostiže norme...To je složen, i obiman posao...Prikazaćemo postupak, kroz jedantipičan primer...Mali kontejnerski brod – fider dužine110,6 m, brzine 14 kn, plovi naSevernom Atlantiku (zona 9) s istoka nazapad, u zimskom periodu...PREDAVANJA 2009. 248
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