| 摘要 |
FIELD: shipbuilding; manufacture of hydrofoils and hydrofoil rudders. ^ SUBSTANCE: according to first version, hydrodynamic wing is made along span with biconvex profiles, either symmetrical or non-symmetrical; outlines of upper and lower contours of each profile are expressed in form of functions whose derivatives are bounded functions in chord length. Maximum thickness of each profile is located after center of each local chord at distance not exceeding 0.01b and is equal to (0.05-0.3)b, where b is length of local chord of profile. According to second version, wing has one blade or two blades connected at end faces. Each blade is trapezoidal in shape and is mounted for turn relative to center line running through centers of local chord. During motion, wing perceives incoming flow at low resistance to motion due to availability of sharp edges and selection of optimal profile; during turn of blade through preset angle of attack relative to incoming flow, reduced hydrodynamic hinge moment is ensured at turn of ship to required side. ^ EFFECT: enhanced efficiency and reliability. ^ 3 cl, 6 dwg |
