ofoilcrafts,coideringthecharacteristicsofhyswashull,andusingtheclaicalthinshiptheoryandslendershiptheory,thewave-makingresistancecalculationmethodofhyswaswhilefoilborneisdevelopedindetail.andthen,asetofresistancecalculationmethodofhyswasforfoilborneconditionisintroducedinthediertation.comparingwiththemodelexperimentalresults,thecalculationalresultsofhullresistancearefairlyclose,themaximumerrorisonly7andtheaverageerroris3.thediertationalsodiscuestheinfluencesofthestrutthickne,draftandhydrofoilattackangleontheresistanceofhyswaswhenfoilborne,andgivesacriterionofselectingtheseparametersfromtheresistanceviewpoint.
theresearchworkreferedinthissectionispioneeredinthedomestic,theliteraturesgivenbyforeignersaretoosketchyandverydifficulttobeused.themethoddevelopedinthediertationisbothconvenientandprecis
etocalculatetheresistanceofhyswasonfoilborne.
3.theresearchonstaticstabilityofhyswas
inthissection,thestabilityatlargeanglesofinclinationofhyswaswhileatrestandhullbornehasbeenresearchedatfirst.then,thecalculationmethodoftraverserightingmomentandtrimmomentproducedbydifferenthydrofoilsisdevelopedindetail,asetofcalculationalandverificationalmethodsoftraversestaticstabilityofhyswasonfoilborneisintroduced.andthen,theeffectsofthehydrofoiltypeandtheratiooflifttobuoyancyonthestaticstabilityofhyswaswithfixedhydrofoilswhilefoilborneisinvestigated.ontheotherhand,thestaticstabilityofhyswasondifferentoperationstatesisalsoanalyzed.thecalculationalresultsshowasfollows:
(1)thesurf
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