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1876年,英国海军建造出了第一艘高速驱逐舰,在试航时发现,螺旋桨推进器在水中会引起剧烈振动,航速下降,噪声增加,并发现原本光滑的螺旋桨表面出现了大面积被腐蚀的凹点,工程师们不得其解。其后,英国海军虽几次改进设计,但始终未能摆脱振动和腐蚀问题的困扰,于是邀请著名力学专家瑞利勋爵来研究这个问题。瑞利经过10多年的研究发现,螺旋桨表面被腐蚀的原因不是海水的化学腐蚀作用,而是物理机制,水力空
In 1876, the British Navy built the first high-speed destroyer. During the trial, it found that the propeller propeller would cause violent vibration in the water, the speed dropped, the noise increased, and the surface of the original smooth propeller was found to have a large area of corroded concave Point, engineers can not understand. Since then, the British Navy, although several times to improve the design, but has not been able to get rid of vibration and corrosion problems, so invited the famous mechanics Lord Rayleigh to study this issue. After more than 10 years of research, Rayleigh found that the reason that the propeller surface is eroded is not the chemical corrosion effect of seawater but the physical mechanism.