螺旋槳設(shè)計計算書(2015)

1、MAU型螺旋槳設(shè)計計算書1.船體的主要參數(shù)船體總長LoA=150m設(shè)計水線長LWL=144m垂線間長LpP=141m型寬B=22m型深D=11m設(shè)計吃水T=5.5m方形系數(shù)Cb=0.84菱形系數(shù)Cp=0.849中剖面系數(shù)Cm=0.69排水量=14000t槳軸中心距基線距離ZP=2m船體有效馬力曲線數(shù)據(jù)如下：航速(kn)10111213有效馬力Pe (hp)11411525205928932. 主機(jī)參數(shù)型號額定功率轉(zhuǎn)速齒輪箱的減速比槳軸處轉(zhuǎn)速 軸系傳送效率 減速裝置的效率 旋向3. 推進(jìn)因子的決定伴流分?jǐn)?shù)推力減額分?jǐn)?shù)相對旋轉(zhuǎn)效率4. 船身效率計算N/A （兩臺）Ps =1714hpN=775r/

2、mi ni=5n=155 r/minn s=0.97 （中機(jī)型船）n g=0.97雙槳外旋3 =0.248t =0.196n r=1.00n H=（1-t”（1- 3=1.0695. 收到馬力計算儲備功率取10%收到馬力Pd =0.9* Ps* n G * n S* n R= 0.9*1714*0.97*0.97*1=1451.43hp6. 假定設(shè)計航速有效馬力計算根據(jù)MAU4-40 MAU4-55 MAU4-70的Bp- S圖譜列下表計算。序號項目單位數(shù)值1假定設(shè)計航速VsKn101113142VA=Vs(1-3 )Kn8.048.8449.64810.4523Bp = NPd0.5 八 /

3、 2.5/V a38.07930.005724.1397319.761834P 0.5Bp6.1708185.4777464.913224.4454285s72.565.259.754.66MAU4-4CP/D0.655240.6922750.7279670.763857n 00.5720.6040.6320.6558THP=Pn hn on rHp1775.2561874.5711961.4722032.8559s72.565.259.754.610MAU4-55P/D0.6964960.7329560.771910.81201511n 00.5550.5880.6170.64212THP=

4、Pn hn on rHp1722.4951824.9141914.9181992.50813s71.263.958.253.214MAU4-70P/D0.7051320.7461960.7887960.83542615n 00.5350.5640.5880.60916THP=Pn Hn on rHp1660.4231750.4271824.9141890.089據(jù)表中的計算結(jié)果可繪制 Pte-Vs曲線，如下圖1所示。從Pte-Vs曲線Pe曲線交點(diǎn)處可獲得:MAU4-40Vs= 11.83KnMAU4-55Vs= 11.73KnMAU4-70Vs= 11.56Kn50 101112137.初步確

5、定槳的要素MAU設(shè)計航速Vs(kn)P/DD(m)n 04-4011.830.72260.63.480.6284-5511.730.76159.63.390.6104-7011.560.7759.93.360.5788空泡校核根據(jù)柏利爾商船界限線計算槳軸沉深hs=T-Z P=3.5m計算 t=15 C,則 Pv=174kgf/m2取水溫15度，Pa-大氣壓為：10330Kgf/m2Po-Pv= P a - Pv+ hsY = 13743.5kgf/m 2序 號項目單位數(shù)值MAU4-40MAU4-55MAU4-701VsKn11.8311.7311.562VA = 0.5144 ( 13 )Vs

6、m/s4.5761854.5375024.4717413(0.7 n ND/60)2(m/s) 2390.4305371.2937364.2494V0.7R2 = vA2 + (3)(m/s) 2411.372391.8826384.245452(T =( Po Pv) / 0.5P Vd.7R0.6386110.6703710.6836956t c (查圖 6-20 )0.2180.2250.2287T= (Q/D) (K t / K q)kgf14938.7514634.2714070.4982Ap= T /( t c 0.5 p Vi7R)2 m3.1841743.1725353.070

7、0089Ae = A p/ (1.067-0.22P/D)2 m3.5314493.5537413.44685210Ae/Ad = A e / n D2 /40.3716860.393310.3888589. 確定螺旋槳的要素?fù)?jù)上表計算結(jié)果，可得不發(fā)生空泡的最小盤面比以及所對應(yīng)的最佳螺旋槳要 素。A / A 0 =0.40 ； MAU4-40槳；Vs =11.83Kn ; P / D =0.722; D =3.48m ; n。=0.628N=155r/mi n強(qiáng)度校核根據(jù)2001年鋼制海船入籍建造規(guī)范校核t 0.25R及t 0.6R應(yīng)不小于按下式計算之值:,kYxY=1.36AiNe/(ZbN

8、)XmAzGAD3心0 10Zb)計算功率:Ne二PSn s=1714X0.97=1662.58 HPD=3.48 mAd二A/Ao=0.4P/D=0.722 & =10oG=7.5 g/cm3 N=155 r/minb.66R=0.226DAi/(0.1Z)=0.78648b.25R=0.7212b0.6R =0.9911b 0.66R =0.7795項目數(shù)值0.25R0.6R弦長b0.5670.78K1634207&250151K31410635K4434A1=D/P(K -K2D/Po.7r)+K D/P0.7R-K42347.4842.5Y=ANe/ZbN11101.82896.5K5

9、8223K63412冷4165K8380330A=D/P(K5+ K6 & )+ K 7 & + K81374.51178材料系數(shù)K （錳鋁黃銅）1. 171.17X=AGANfD7(10 10Zb)0.1840.115t=Y/(K-X)0.5106.152.4MAI標(biāo)準(zhǔn)槳厚度t 133.175.9校核結(jié)果滿足要求滿足要求實(shí)取槳葉厚度133.175.910. 確定設(shè)計的螺旋槳各切面厚度槳葉厚度查表8-4 MAU標(biāo)準(zhǔn)槳可得出各切面最大厚度為：t o.2R=141.3mm t o.3R=124.9mm t o.4R=1O8.6mm t o.5R=92.2mmto.6R=75.9mm t o.?R=

10、59.5mm t o.8R=43.2mm t o.9R=26.8mm11. 螺距修正螺距比為：P/D=(P/D)。=0.72212. 重量及慣性矩計算采用船舶及海洋工程設(shè)計研究院公式:0.2 +t 0.6) (1 d/D) D槳葉重：Gbl = 0.169 丫 Zbmax (0.5t=0.169 7500 - 4 0.7865 (0.5 0.141+0.076) (1-0.18) 3.48 =1667kgf槳轂重：G = (0.88 0.6 do / d) L ky d=(0.880.6 0.236/0.6264) 0.470-7500 0.6264=904.5kgf螺旋槳重量：G = Gbl

11、+ Gn = 1667+904.5=2571.5kgf螺旋槳的慣性矩：lmp= 0.0948 丫 ZSax (0.5t o.2+to.6)D3=0.0948 -7500 -4 -0.7865(0.5 -0.141+0.076)3482=13810.3kgf- cm- s13. 敞水性征曲線之確定由MAU4-40 P/D=0.7和P/D=0.8的敞水性征曲線內(nèi)插得到MAU4-40P/D=0.722的敞水性征曲線，其數(shù)據(jù)見下表。0.20.30.40.550.2592460.2214750.187970.15208710.0285030.0259460.0230860.01990514. 系柱特性計

12、算由上圖得 J=0 時，KT=0.302, KQ=0.0328.計算功率 PD=1714*0.97=1662.58hp系柱推力減額分?jǐn)?shù)取t0=0.04主機(jī)轉(zhuǎn)矩 系柱推力 螺旋槳轉(zhuǎn)速Q(mào)=Pd*60*75/ (2 n N)=7682.16kgf mT=KTQ/KQD=20321kgfN=60SQRT(TPD 4KT)=125.64r/mi n15. 螺旋槳計算總結(jié)螺旋槳直徑螺距比葉數(shù)型式 盤面比D=3.48 mP/D=0.722Z=4MAUA型e/Ao=0 .縱傾角& =10螺旋槳效率n o=0.628設(shè)計航速Vs=11.83kn轂徑比db/D=0.18旋向雙槳外旋材料錳鋁黃銅重量2571.5kg

13、f慣性矩13810.3kgf15.螺旋槳型值表（詳見附EXCEL2cms表）螺旋槳槳葉輪廓尺寸表r/R0.20.30.40.50.60.70.80.9從母線到葉片隨邊的距離219.899808263.07756304.83965342.43339377.19581403.70018412.03687381.3641533從母線到葉片導(dǎo)邊的距離303.423984348.0174380.02714399.53184402.28452379.94849318.76034197.642421(葉片寬度523.323792611.09496684.86678741.96523779.48033783.

14、64867730.79722579.0065843葉片厚度141.288124.932108.57692.2275.86459.50843.15226.796從導(dǎo)邊至最厚點(diǎn)的距離167.463613195.55039219.15737241.1387272.03863315.02677332.51273283.134222MAI型螺旋槳切面尺寸表r/R0.2葉寬b523523523523523523523最大厚度t141141141141141141141X010.4620.9231.3852.378.45104.6Yo49.3573.108584.247593.2715p07.2305120

15、.2025130.002Yu0：34.192526.860521.1514.17.614 :3.31350.3葉寬b611611611611611611611最大厚度t125125125125125125125X012.2224.4436.6661.191.65122.2Yo43.7564.812574.687582.687595.0625106.5625115.25Yu0 30.312523.812518.75P 12.56.75 j2.93750.4葉寬b685685685685685685 J685最大厚度t109109109109109109109X0 113.727.441.168.

16、5102.75:137Yo38.1556.516565.127572.103582.894592.9225100.498Yu026.432520.764516.3510.95.8862.56150.5葉寬b742742742742742742742最大厚度t92929292929292X015.062630.125245.1878:75.3872113.0066150.7002Yo32.2 :47.70254.97P 60.858P 69.96678.43 :84.824Yu022.3117.52613.89.24.9682.1620.6葉寬b779779779779779779779最大厚度

17、t76767676767676X016.175632.351248.526880.9522121.3912161.8302Yo26.639.40645.4150.274:57.79864.7970.072Yu0：34.192526.8605P 21.29114.17.614 :3.31350.7葉寬b784784784784784784784最大厚度t60606060606060X019.678439.435259.113698.4704147.7056196.9408Yo2131.1135.8539.6945.6351.1555.32Yu014.5511.43963.241.410.8葉寬b

18、73731731731731731731最大厚43434343434343度tX020.760441.520862.2081103.7289155.5568 j155.5568Yo15.0522.295525.692528.444532.701536.6575 |39.646Yu010.42758.19156.454.32.3221.01050.9葉寬b579579579579579579 579最大厚度t27272727272727X017.7174:35.376953.094388.4712132.7068 j176.9424Yo8.224213.019414.939116.858820.00723.01752