节点文献
滑行艇静水阻力的估算方法
A PREDICTION METHOD OF STILL WATER RESISTANCE OF PLANING BOATS
【摘要】 本文将国内诸滑行艇模型试验资料与D.T.M.B.62系列资料作了对比,发现尽管两者的艇型及试验条件都不一样,但在艇型主要因素间的某些关系及阻力特性方面有一定联系。若它们的Lσ/Bσx、A/2/3、Xg及Fn保持相同或相当,且β=13°~17°,BσT/Bσx=0.7~0.8,Aσ=45.5%Lσ~48.5%Lσ,则可利用62系列的阻力资料,并引进+7%的修正系数,就可预报国内艇型的阻力性能。在Fn<4.2范围内,其估算结果是偏于安全的。 文中给出了滑行艇阻力估算图谱,其适用范围为Lσ/Bσx=3.0~7.0,A/2/3=5.0~9.0,Fn=2.0~4.0,Xg=8%Lσo。另外,还给出了双桨、三桨、四桨滑行艇的附件阻力因子,供设计使用。
【Abstract】 Comparison between the experimental data of domestic planing boat models with those of D. T. M. B. series 62 shows that both of them resemble in relationships between primary factors of planing form and in resistance performance, though the hull forms and the experimental conditions are different. If their Lc/Bcx, A/2/3, Xg and Fn are kept same or equivalent, and β = 13° -17°, BcT/Bcx=0.7-0.8, Ac=45.5%Lc-48.5%Lc, one may be able to predict the resistance performance of domestic planing hull forms by utilizing the resistance data of series 62 and a correction coefficient of +7%. The result is on the safe side for Fn<4.2.The graphs for resistance calculation of planing boat are presented. The applicable ranges are Lc/Bcx=3.0-7.0, A/23s=5.0-9.0. Fn = 2.0-4.0, Xg= 8%Lc. The appendage resistance factors of planing boat with twin, three and four propellers have also been presented.
- 【文献出处】 中国造船 ,Shipbuilding of China , 编辑部邮箱 ,1984年03期
- 【被引频次】14
- 【下载频次】229