| 摘要 |
FIELD: transportation.SUBSTANCE: leading extremity of the bow bulb of underwater part of the vessel hull in horizontal longitudinal sections is offered to implement along the arch of circles with the radius Rand the angle L of the circular sector of semi-contact equal to the angle ?of internal water friction at the depth h (cm) from free surface, L°=?°=arctg[1-C/(?·h)]=arctg[1-(0.28/h)], where C=274.642·10(kg/cm) - specific cohesion of water, ?=981·10(kg/cm) - specific weight of water, and in vertical longitudinal sections - along arch of circles with the radius Rwith the angle ? of circular sector of semi-contact equal to the angle Rof internal water friction at the depth h > 80 cm, ?°=?°=45°.EFFECT: decrease of water resistance to the vessel movement.2 cl, 5 dwg |
