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1、1.设计计算书 1）原始给定船舶数据总长船型：远洋散装货船为球首，球尾、单桨、半悬舵Loa=60.03m设计水线长 垂线间长 型宽 型深 设计吃水 方形系数 排水量Lwl=56.0mLpp=54.50mB=9.2omD=4.60m d=3.75mCB=0.735A=1416t桨轴中心距基线Z p=1.275艾尔法计算表速度v910111213傅汝德数Fr0.2090.2320.2550.2790.302标准Co杳图7-3418380354305260标准Cbc ,0.7280.690.6480.610.574实际Cb0.966.5213.4320.4928.05（肥或瘦）%（肥）（肥）（肥）（
2、肥）（肥）Cb修正（ ）-2.12-14.38-29.61-45.18-61.85Cb修正数量，-8.85-54.63-104.83-137.8-160.81已修正Cb之Ci40932524916799B/T修正（ ）-3.31-3.31-3.31-3.31-3.31B/T修正数量，42-14-11-8-6-3已修正数量B/T之C239531424116196标准Xc,%L,船中刖或后1.280.55-0.8-1.58-2.1实际Xc,%L,船中刖或后0.1280.1280.1280.1280.128相差L，在标准者刖或后-1.15-0.420.931.72.23航速X修正（% ）V/kn9.
3、0-210.(-0-65111.04.5312.011.0513.017.1有效功率Pe（hP）满载19533159712352810nvv|丄j 丄丄p丿7小,1夂TC 冊耳Cd-ind Cd C-8已修正Xc之C338731323114581长度修正（%）0.250.250.250.250.25长度修正数量，A40.9680.7830.5780.3630.203已修正长度C4387.968313.783231.578145.36381.203Vs37291000133117282197Pe(kw)1442434399082066Pe(hp)195331597123528102.主机与螺旋桨
4、参数2）由模型试验提供的船体有效功率曲线数据主机型号6300ZC额定功率441.6kw额定转速400rpm螺旋桨型号AU 型叶数3叶桨数单桨旋向右旋3. 推进因子的决定 据型船资料选取伴流分数：对于单螺旋桨船 w 二 0.5C - 0.05 二 0.5 X 0.735 二 0.32B 按经验公式决定推力减额分数：对于单螺旋桨标准型商船（CB二0.54 - 0.84 ）t 二 0. C - 0.壬2 X0. 5 -.7 2 70. 1P取相对旋转效率n R=i.o船身效率n H = = 1.121 - w4. 可以达到最大航速的计算采用AU3叶桨图谱进行计算。取功率储备 10%，轴系效率n S=
5、0.98螺旋桨敞水收到马力：PD=441.6kwO.9X_n sn R=441.6X0.9X0.98X1=389.49kw=529.70(hp)项目单位数值假定航速Vkn910111213匕二(1- w)Vkn6.126.87.488.168.84B = NP0.5 / V 2.5pDA98.81375.95459.86948.16039.4329.948.7857.7386.9406.279AU3-356112.3101.591.384.177.5P/D0.5660.5810.5960.6090.622n00.4550.5020.5440.5720.602p =p n nTED H 0hp2
6、69.935297.819322.736339.347357.145AU3-506110.299.288.881.274.8P/D0.5900.6230.6480.6680.696n00.4480.4820.5170.5470.578p =p n nTED H 0hp265.782285.953306.718324.515342.907根据 AU3-35、AU3-50的、B-5图谱列表计算。AUV / hpmaxV / hpAP/D6Dn3-359.746.620.61104.31.7280.4903-509.666.550.58103.01.6870.470n(511010090807020
7、01011126_13 v/knAU3 叶桨图谱设计计算结果5. 空泡校核按柏利尔空泡限界线中商船上限线，计算不发生空泡之最小展开面积比。桨轴沉深h =T-Z =3.75 1.275 二 2.475msPp-p 二 PY +h-p=403 3力 10 -25 2. 4 7 5 1 740 v a s v=12693kgf/m2计算温度t = 15C p =174kgf/m2 PD=5297hp p =104.63kgf s2/m4vD序号项目单位数值AU3-35AU3-501Vmaxkn9.749.662V = 0.5144V (1- w)Amaxm/s3.4073.3794(0.7兀 ND/
8、60)2(m/s)?641.15611.075V2= V2 + (07兀 ND/60)20.7 RA652.76622.496= (p -p )/PV20.7 R0v20.7 R0.3710.3907Tc0.1540.1618T = P -n 75 / VD0Akgf571455269A = T/丄 pV 2 -tp20.7 R cm21.0871.05410A = A / (1.067 - 0.229P / D)Epm21.1721.12811兀A /A = A /( D2)E0E40.5000.505求得不发生空泡的最小盘面比以及所对应的最佳螺旋桨要素。A / A 二 0.503P/D=0
9、.594D=1.706m 耳=0.479 V 二 9. 6 9k5nE 00ma x6. 强度校核按 2009 年规范校核 t及 t，应不小于按下式计算之值：0.25 R 0.6R1 . 3 A6 NY =1_eZbneA GA N 2D3X = Td1010 Zb计算功率 N = 441.6 x 1.36 x 0.98 = 588.565 hpeA = A / A = 0.503d E 0P / D = 0.594；s = 10; G = 7.6g / cm3； N = n = 400rpmeb=0.226DA /(0.1Z)=0.226x1.706x0.503/0.3=0.6464m0.6
10、6Rdb= 0.7212b= 0.4662m0.25R0.66Rb= 0.9911b= 0.6406m0.6R0.66R项目单 位数值0.25R0.6R弦长bm0.46620.6406K1、634207K21查表7-2250151K3r1410635K4434A = D / P (K - K D / P + K D / P - K1120.7)30.742728.53955.55Y 二 1.36AN /(Zbn )1 ee2870.58731.61K5 、8223K6i查表7-23412K7r4165K8丿380330A 二(D / P)(K + K ) + K + K256781500122
11、1材料系数K1.1791.179X = A GA N 2 D 3/1010 Zb2d0.3260.2370tmm58.01127.869AU标准桨叶厚度t，mm65.25537.191校核结果满足要求满足要求实取桨叶厚度mm67.437.40.S0.35109Q.S0-5O.fl0-SO-fl07 Q 応I0.51G E16L/Ae/Ac要/求的Z- /./P/D:-/0.425空炮校核计算结果0,5实际桨叶厚度按t = 37.4mm与t = 674mm连直线决定:0.6 R0.25Rt= 71.7mm; t= 63.2 mm0.20.3t= 54.6mm; t= 46.0 mm0.40.5t
12、= 37.4mm; t= 28.9 mm0.60.7t= 20.3mm; t= 11.7 mm0.80.9t= 3.12 mm1.07. 螺距修正根据尾轴直径大小。决定毂径比/D = 0.18，此值与AU桨标准毂径比h相同，故对此项螺距无需修正。由于实际桨叶厚度大于AU桨标准厚度，故需因厚度差异进行螺距修正。设计桨(-)b 0.7 R0.02890.9964 x 0.6464= 0.04487标准桨（L）b 0.7 R= 0.045330.02920.9964 x 0.37893 x 1.706取 AU3-35 为基准桨NP(1- w)V x 30.866NP0.68 x 9.63 x 30.866
