螺旋桨设计计算说明书

1、某沿海单桨散货船螺旋桨设计计算说明书姓名：XXX班级：XXX学号：XXX联系方式：XXX日期：XXX1.已知船体的主要参数由模型试验提供的船体有效马力曲线数据如下:航速V(kn)13141516有效马力PE(hp)21602420300540452.主机参数3.相关推进因子4.可以达到最大航速的计算采用MAC四叶桨图谱进行计算。取功率储备10%轴系效率ns = 0.98螺旋桨敞水收到马力：PD= 4762.8根据MAU4-40 MAU4-55 MAU4-70的jBp-S图谱列表计算:项目单位数值假定航速Vkn13141516V=(1-w)Vkn9.37310.09410.81511.536Bp

2、=NF0.5/VA2.542.3435.1829.6025.19船长型宽设计吃水排水量方型系数 桨轴中心距基线高度L = 118.00B = 9.70T = 7.20CZp = 3.00米米米= 5558.2吨B=0.658米额定功率额定转速转向传递效率6ESDZ58/100Ps = 5400 hpN = 165 rpm柴油机右旋ns=0.98伴流分数 推力减额分数 相对旋转效率w = 0.279t = 0.223船身效率nR= 1.01 tH1 w1.0777JBP6.515.935.445.02MAU4-40S75.8270.1164.9960.75P/D0.6400.6670.6940.

3、720nO0.55760.58280.60550.6260PTE=PDHnOhp2862.092991.443107.953213.18MAU4-55S74.3568.2763.5759.33P/D0.6860.7130.7410.770nO0.54140.56720.59090.6112PTE=PDnHnOhp2778.942911.363043.283137.21MAU4-70S73.7967.7963.0758.70P/D0.6930.7230.7540.786nO0.52090.54560.56430.5828PTE=FD耳H qOhp2673.712800.492891.862991

4、.44据上表的计算结果可绘制PTE、S、P/D及n。对V的曲线，如下图所示从PTEf(V)曲线与船体满载有效马力曲线之交点，可获得不同盘面比所对应的设计航速及 螺旋桨最佳要素P/D、D及n15012O如下表所列。MAUVmaxP/DDn4-4015.120.69564.24.2410.6004-5515.030.73963.34.1570.5894-7014.800.74563.54.1060.5585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hf =TZp=7.23.00=4.2mpopv= pa +丫hspv = 10300+1025X4.2-174 =

5、14461kgf/m2计算温度t = 15C ,Pv = 174kgf/ m2, PD= 4762.8hp,p= 104.63kgfs 7m4序号项目单位数值xfxfMAU4-40MAU4-55MAU4-701十VmaxKn15.1215.0314.802V=0.5144Vmax(1-w)m/s5.6085.5745.48932(0.7nND/60)(m/s)2657.81632.01616.594V0.7R=A+(3)(m/s)2689.25663.08646.725(T=(p0-pv) /PVo.7R220.4010.4170.4276 TC0.1640.1690.1747T=PDnO-

6、75/VAkgf3822037448363448.1. .2AP=T/ PV0.7R2Tc2m26.4636.3916.1649AE=AP/ (1.067-0.229P/D)m27.1197.1106.881101AE/AO=AE/ nD240.5030.5240.519按上述结果作图，可求得不发生空泡的最小盘面比以及对应的最佳螺旋桨要素AE/ AO= 0.535P/D=0.730 D= 4.160no= 0.588 Vmax= 15.036.强度校核按1983年规范校核t0.25R及t0.6r,应不小于按下式计算之值：t=、丫，YA1N,X=A2GAdN2D3/1010Zb.K XZbN计算

7、功率Ne=5400X 0.98=5292hp3AD= AE/ AO=0.535, P/D= 0.730 ,8，G=7.6gf/cm ,N=165rpmb0.66R=0.226DAE/ AO/0.1Z=1.2575b0.25R=0.7212b0.66R= 0.9069b0.6R=0.9911b0.66R= 1.2463t0.2R :=169.68t0.3R :=150.30t0.4R =130.88t0.5R =111.52t0.6R二=92.13t0.7R :=72.72t0.8R =53.34t0.9R =33.957.螺距修正项 目单位数值0.25R0.6R弦长bm0.90691.2463

8、Ki643207K2250151K31410635K4434A = D/P(Kl-K2D/Po.7)+ K3D/Po.7-K42327836Y=AN/ZbN20572.565378.93K58223K634124165380330A=D/P(K5+K6&)+K7&+&11931013材料系数K（铝镍合金）1.1791.179X=AGAN2D/1010Zb0.26210.1619t Y,/(K X)mm148.7971.65MAI标准桨叶厚度tmm159.196590688校核结果满足要求满足要求实取桨叶厚度mm16092.13连直线决定:与t0.25R= 160实取桨叶

9、厚度按ti.0R=0.0035D=14.56根据尾轴直径大小，决定毂径比dh/D=0.18，此值与MAL桨标准毂径比相同，故对此项螺距无需修正。由于实际桨叶厚度大于MAI桨标准厚度，故需因厚度差异进行螺距修正。设计桨( (丄丄) )0.7R=0.05805b标准桨(E)0.7R= 0.05522b1s =也=(1- )V30866=(1-0.279)*15.03*30.866心65*3.0368)=0.6675 NP NP(-)0.7R=(-)0.7R设-(-)0.7R标X055: X0.75=-0.001126bbb0.51PPt()t=2( )0(1s)()0.7R=2*0.730*0.6

10、675*0.001126=0.00109DDb修正后的螺距比：(-P)t=0.730+0.00109=0.7318.重量及惯性矩计算根据MAL桨切面的面积数据用积分方法计算得：桨叶重量3681.5.5kgf桨毂重量1896.2 kgf螺旋桨重量5577.7 kgf桨叶惯性矩443.5 kgf.m.sA2桨毂惯性矩30.9 kgf.m.sA2螺旋桨总惯性矩474.4 kgf.m.sA2(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)r/R面积系数 Ka弦长X取大 厚度 bxt切面面积(m2)S=Kabt辛式 系数SMx( 5)rr2xX(8)0.20.6740.14199150.0

11、95702310.09570230.4160.1730560.0398121490.0165618540.30.6740.14685870.098982740.39593090.6240.3893760.2470609050.1541660050.40.6740.14335270.096619720.19323940.8320.6922240.1607752120.1337649760.50.67450.13229900.0892340.35694 1.0401.08160.3712204 0.3860692572366840.077440.154891.2481.557504 0.19330

12、52 0.24124490.60.67450.11481996022049510.091136240.061690.246791.4562.119936 0.3593363 0.52319370.70.6779246958370.042570.085141.6642.768896 0.1416794 0.23575450.80.6830.06233081192391.87228680.021840.087381.8723.504384 0.1635760 0.30621440.90.6950.031431795142.080485314.32640010.700102.08刀(9)=刀(10)

13、=刀(6)=1.6767658 1.99696981.616028/52079.敞水特性曲线由MAU4-40,MAU4-55,P/D=0.731的敞水特性曲线内插得到MAU4- 53.5 ,P/D= 0.731的 敞水特性曲线，其数据如下：设计桨的敞水特性数据表J00.10.20.30.40.50.60.710KQ0.372 0.354:0.3220.2940.262:0.222P 0.1840.132KT0.3340.3030.2780.2440.2050.1630.1230.07410.螺旋桨计算总结螺旋桨直径4.160螺距比0.731型式MAU叶数Z=4盘面比AE/ AOO.535纵倾角

14、8螺旋桨效率no= 0.588设计航速Vmax= 15.03毂径比dh/D=0.18旋向右旋材料铝镍青铜重量5577.7kgf惯性矩474.4 kgf.m.sA211.附录螺旋桨制图数据。高度母线距随边母线距导边叶宽实 际 尺寸高度母线距随边母线距导边叶宽画 图 尺 寸t0.2r0.4160.3515970.48514350.8367405t0.2r41.635.159748.5143583.67405t0.3r0.6240.42063375 0.556443750.9770775t0.3r62.442.0633855.6443897.70775t0.4r0.8320.4874070.6076

15、241.095031t0.4r83.248.740760.7624109.5031t0.5r1.0400.54751550.638811.1863255t0.5r104 54.7515563.881118.6326t0.6r1.2480.603097 0.643211251.24630825t0.6r124.860.309764.32113124.6308t0.66r1.37280.62548050.63201951.2575t0.66r137.2862.5480563.20195125.75t0.7r1.4560.64547475 0.607498251.252973t0.7r145.664

16、.5474860.74983125.2973t0.8r1.6640.65880425 0.509664751.168469t0.8r166.465.8804350.96648116.8469t0.9r1.8720.60976175 0.316009750.9257715t0.9r187.260.9761831.6009892.57715t0.95r1.9760.52903025 0.170391250.6994215t0.95r197.652.9030317.0391369.94215t1.0r2.0800.217421755t1.0r20821.74218叶切面实际尺寸0.2r0.4r0.6

17、r0.7r0.9rxy0yuXyoyuxy0yuxy0yuxy0yu00.05939000.04581000.0313200 0.02182000.00282 00.016730.087520.041150.021900.06751 0.031740.027170.045700.021740.031450.031200.014910.028330.007160.001360.033470.101380.032320.043800.07820 0.024930.054340.053440.016680.063020.037960.011240.056560.010690.000920.05020

18、0.112240.025450.065700.08658 0.019630.081510.059650.013130.094470.043560.008690.084890.013890.000700.083670.129040.016970.109500.09953 0.013090.135970.069280.008710.157370.052100.005600.141460.019500.000410.125510.144650.009160.164250.11158 0.007070.203900.078130.004610.236060.059880.002980.212190.0

19、25360.000240.167350.156440.003990.219010.12067 0.003080.271820.084580.002070.314750.065880.001270.282920.029690.000100.251020.169340.328510.130620.407790.091950.472250.072570.424470.033850.267760.169680.350410.130880.434960.092130.528750.072720.452700.033950.334700.165860.438010.127940.530430.090060

20、.591780.071080.508340.033490.418370.152630.547520.117730.649700.082870.702040.065410.577870.031490.502040.132600.657020.102280.769720.072000.812180.056830.647480.028180.585720.107150.766520.082650.900830.058180.922440.045920.717100.023540.669390.076780.876020.059221.007640.041691.032580.032910.78663

21、0.017510.753070.042930.985530.033111.127040.023311.142840.018400.856250.010460.794900.025451.040280.019631.186610.013821.197840.010910.890960.006590.836740.007641.095030.005891.246310.004151.252970.004980.925770.0023叶切面画图尺寸0.2r0.4r0.6r0.7r0.9rxyoyuXy0yuxy0yuxy0yuxy0yu05.93880004.58080003.13242002.18

22、16000.2817901.673488.75209 4.114742.190066.750793.173842.716954.569652.174273.144963.119691.490762.832860.716350.135803.3469610.138383.232404.380127.820082.493265.433905.343541.667556.302453.795981.123525.656461.069430.091675.0204411.224332.545206.570198.657711.963208.150865.965421.312859.447424.355

23、930.869008.489321.388560.069608.3674112.904161.6968010.950319.953421.3088013.597226.928180.8706315.737345.210390.5599414.145791.950430.0407412.5511114.465220.9162716.4254711.157520.7067520.389607.812620.4606523.606015.988490.2981521.218682.536070.0237716.7348115.644500.3987521.9006212.067140.3075727.181988.457530.2072931.474686.588430.1272628.291582.968930.0101925.1022216.9340632.8509313.0618240.779219.1945747.224557.2574642.446623.3848226.7757016.9680035.0409913.0880043.496169.2130052.875467.2720045.270233.395