本文介绍了一种新型的高强度、高阻尼、耐腐蚀性优良的螺旋桨专用合金在降噪效果方面的试验研究成果。
A new propeller alloy with high strength, high damping capacity and excellent corrosion resistance has been put to damping effect test.
锡能提高黄铜的强度和对海水的耐腐性﹐故称海军黄铜﹐用作船舶热工设备和螺旋桨等。
Tin can improve the brass strength and corrosion resistance of the sea, therefore calls navy brass, used for ship thermal technology equipment and propeller, etc.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
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