集裝箱船螺旋槳設(shè)計(jì)計(jì)算說(shuō)明書 班級(jí)：船舶11-3 學(xué)號(hào)：1102120324 姓名：孫凱凱 指導(dǎo)老師：劉大路1.已知船體的主要參數(shù)設(shè)計(jì)水線長(zhǎng) Lwl=91.6垂線間長(zhǎng) Lpp=90.0m型寬 B = 16.7m設(shè)計(jì)吃水 T = 5.3m排水體積 =6253.2m排水量 = 6409.6t方型系數(shù) CB = 0.785槳軸中心距基線高度 Zp = 1.90m棱形系數(shù) Cp = 0.790由模型試驗(yàn)提供的船體有效馬力曲線數(shù)據(jù)如下：航速V（kn） 1011121314有效馬力PE（hp）763 1066 1535 225419222. 主機(jī)參數(shù) 主機(jī)功率 Ps=2900kw主機(jī)轉(zhuǎn)速 N = 755r/min轉(zhuǎn)向 右旋減速比 i=3.355:1傳遞效率 s=0.97(已將減速箱考慮在內(nèi)）3.相關(guān)推進(jìn)因子伴流分?jǐn)?shù) w = 0.3425推力減額分?jǐn)?shù) t = 0.275相對(duì)旋轉(zhuǎn)效率 R = 1.0船身效率 4.可以達(dá)到最大航速的計(jì)算采用MAU四葉槳圖譜進(jìn)行計(jì)算。取功率儲(chǔ)備10%，軸系效率s = 0.97螺旋槳敞水收到馬力：PD = =0.929001.360.971.0=2531.7hpr/min根據(jù)MAU4-40、MAU4-55、MAU4-70的-圖譜列表計(jì)算：項(xiàng) 目單位數(shù) 值假定航速Vkn11121314VA=(1-w)V kn7.23257.898.54759.205Bp=NPD0.5/VA2.596.352677.51663.45852.7269.8168.2397.9667.261MAU4-40106.597.589.883P/D0.5620.5750.5920.612O0.4510.47750.5050.525PTE =PDHOhp1712.2611812.8701917.2771993.208MAU4-5510696.588.581.8P/D0.5980.6150.6350.655O0.43320.460.4870.51PTE =PDHOhp1644.6821746.4301848.9381936.260MAU4-70104.595.587.580.67P/D0.60.6180.6380.661O0.421.44750.47250.495PTE=PDHOhp1594.5671698.9731793.8871879.311據(jù)上表的計(jì)算結(jié)果可繪制PTE、P/D及O對(duì)V的曲線，如下圖所示。 從PTEf(V)曲線與船體滿載有效馬力曲線之交點(diǎn)，可獲得不同盤面比所對(duì)應(yīng)的設(shè)計(jì)航速及螺旋槳最佳要素P/D、D及O如下表所列。MAU Vmax P/DDO4-4013.910.5885.63.300.534-5513.780.62385.63.270.4964-7013.710.63184.93.220.4795.空泡校核按柏利爾空泡限界線中商船上限線，計(jì)算不發(fā)生空泡之最小展開(kāi)面積比。槳軸沉深 hs =TZp=5.11.90=3.2mp 0p v = pa + hspv = 10300+10253.2-174 = 13406kgf/m2計(jì)算溫度t = 15C ,Pv = 174kgf/ m2 , PD = 3443.1hp, = 104.63kgfs2/m4序號(hào)項(xiàng)目單位數(shù)值MAU4-40MAU4-55MAU4-701VmaxKn13.9113.7813.712VA=0.5144Vmax(1-w)m/s4.584.544.513(0.7ND/60)2(m/s)2780.63766.5743.244V20.7R=V2A+（序號(hào)3)(m/s)2801.77787.11763.585=(p 0- p v) / V0.7R20.320.3250.3366c0.130.1350.1427T=PDO75/VAkgf29882.828212.227426.58AP=T /V0.7R2cm25.485.084.849AE=AP / (1.067-0.229P/D)m25.875.505.2410AE/AO=AE /D20.690.650.64按上述結(jié)果作圖如下,可求得不發(fā)生空泡的最小盤面比以及對(duì)應(yīng)的最佳螺旋槳要素AE / AO = 0.64 P/D= 0.63 D=3.24m o=0.48 Vmax= 13.73kn 6.強(qiáng)度校核按2001年校核t0.25R及t0.6r,應(yīng)不小于按下式計(jì)算之值: t=, , X=A2GAdN2D3/1010Zb計(jì)算功率Ne=39440.97=3826hpAd = AE / AO =0.64, P/D= 0.63 , ，G=7.6g/cm3 ,N=ne=231r/minb0.66R =0.226DAd/(0.1Z)=0.2263.240.640.4=1.1716mb0.25R=0.7212b0.66R = 0.845mb0.6R =0.9911b0.66R = 1.1612m項(xiàng) 目單 位數(shù) 值0.25R0.6R弦長(zhǎng)bm0.8451.1612K1634207K2250151K31410635K4434A1=D/P(K1-K2D/P0.7)+K3D/P0.7-K439221494Y=A1Ne/(Zbne)19218.695327.42K58223K63412K74165K8380330A2=D/P(K5+K6)+K7+K81358.791038.89材料系數(shù)K（鋁鎳合金）1.1791.179X=A2GAdN2D3/1010Zb0.3550.197mm152.7273.66MAU標(biāo)準(zhǔn)槳葉厚度tmm123.970.6校核結(jié)果不滿足要求不滿足要求 實(shí)取槳葉厚度mm15374實(shí)取槳葉厚度按t1.0R=0.0035D=11.34mm與t0.25R=153mm連直線決定:t0.2R =162.4mm t0.3R =143.6mm t0.4R = 134.7mm t0.5R =105.8mm t0.6R = 86.9mm t0.7R = 67mmt0.8R = 49.1mm t0.9R = 30.2mm7.螺距修正根據(jù)尾軸直徑大小，決定轂徑比dh/D=0.18，此值與MAU槳標(biāo)準(zhǔn)轂徑比相同，故對(duì)此項(xiàng)螺距無(wú)需修正。由于實(shí)際槳葉厚度大于MAU槳標(biāo)準(zhǔn)厚度，故需因厚度差異進(jìn)行螺距修正。設(shè)計(jì)槳 0.7R =0.067/(0.99641.1716)=0.05739標(biāo)準(zhǔn)槳 0.7R = 0.01713.24/(0.99640.36163.24)=0.04746 (取MAU455為基準(zhǔn)槳）1s = =0.6413.7330.866/（2312.0412）=0.57440.7R =0.7R設(shè)0.7R標(biāo)0.75=0.012453 t=20(1s) 0.7R =-20.630.57440.012453 =-0.009013修正后的螺距比：=0t =0.63+0.009013=0.648.重量及慣性矩計(jì)算槳葉重槳轂重螺旋槳重量2688.23+869.22=2557.45螺旋槳慣性矩=19304.79.敞水特性曲線由于校核后所得盤面比AE / AO = 0.64，所以無(wú)需由MAU4-55,MAU4-70,P/D=0.63 的敞水特性曲線內(nèi)插得到MAU4-64,P/D= 0.63 的敞水特性曲線，可以直接從課本附錄中MAU4-55KT,KQ-J圖查得數(shù)據(jù)，其數(shù)據(jù)如下： 設(shè)計(jì)槳的敞水特性數(shù)據(jù)表J00.20.40.610KQ0.280.23280.16680.1181KT0.27590.21570.13780.0502 設(shè)計(jì)槳的敞水性征曲線 10. 系柱特性計(jì)算 由上圖得J=0時(shí)，KT=0.2759，KQ=0.028. 計(jì)算功率 PD=39440.97=3825.68hp 系柱推力減額分?jǐn)?shù)取t0=0.04 主機(jī)轉(zhuǎn)矩