【摘要】 本文阐述尖头蜗尾船型的线型设计与研究要点,通过对四条船模的阻力试验和自航试验结果、首尾浪高及假尾长度测量值的分析,确定了一种与蜗槽尾结合,阻力性能良好的首型。文中给出了Ⅲ号模操纵性试验的主要结果。更多还原

【Abstract】 Some specific features of shipline design are described. Four ship models have been designed with the sharp bow and cochlear-channeled stern of the same main dimensional coefficients and displacements. The same stern form is used as it gives higher propulsion efficiency and lower hull vibration. However, the bow shapes are different, changing from extreme U-form, U-form to V-form: Tests on ship model streamline show that at bow-bilge parts of the U-form bow, there exists bilgevortex. The comparative tests on resistance show that the model with V-form bow (model No. 3) gives the smallest resistance and the lowest wave height. The power saving is more than 10 percent as compared with that of the conventional ship. Maneuverability tests on model No. 3 show that its maneuverability is good, in particular, rudder -efficiency is good when operating astern. Some special phenomena observed in the test are discussed.更多还原