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PONAŠANJE BRODA NA TALASIMA____________________________Dobija seζrel= ( z − ζ ) +hC C VLC+ ζCsin( ω t− ) − A sin( ωt+k x)opγC T p T C ζ ′( oζ = h + ζ ) sin( ω t−δ)CrelC Crelp Cv = ζ t = ζ ω ω t−δ( o)rel C() cos( )rel Crelp p CCrelPrimer prenosne funkcije relativnogpomeranja proizvoljne tačke broda uodnosu na slobodnu površinu...ζ = ζ + A − 2ζ A cos( k x + γ )( o)2 2C C T C T T C Crel o oζP 1 P 2P cos( k x )( o)Crel2C= = +relC− A TC T C+γCζ ωP 1 P 2P cos( k x )( o)Crelp 2v= = ωrelp+C−ATC T C+ γCPREDAVANJA 2009. 131
PONAŠANJE BRODA NA TALASIMA____________________________4.5. Plovidba na kosim talasimaPrividna frekvencija talasa zavisi od μSasvim ukratko... ω =± ( ω −vkcosμ )ptako da sve prenosne funkcije zavise iod kursa broda...Primer, 3D prenosne funkcije...u zavisnosti od frekvencije ω To0 ≤ μ ≤ 30°30°≤μ ≤ 60°60°≤μ ≤ 120°120°≤μ ≤ 150°150°≤μ ≤ 180°Plovidba niz talase, talasi skrme (following sea)Talasi s krme – bočno(quartering sea)Plovidba na bočnimtalasima, talasi s boka(beam sea)Fregata,L = 110 m,v o = 25 knTalasi s pramca – bočno(bow sea)Plovidba ka talasima,talasi s pramca (head sea) ωT = const → λT= constPREDAVANJA 2009. 132
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