Calculul Palei Unei Elici, A Rezistentei La Inaintare Si a Motorului

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METODA HOLTROP MENNENDate de intrare Coeficienti de derivareLBP= 144.178 m Kx= 1.038Lwl= 151.756 m Ky= 1B= 22.7 m Kz= 0.963T= 7.033 mxb=-1.374 m CM= AM/BTAwl=2645.654 mCM= 0.985AM=157.225 mCW= AWL/LWLBABT=16.378 mCW= 0.768hB=2.216 m Cp== 14668 mCp= 0.615 1.1883E-06 m/sv= 10.082 m/sVerificarea domeniilor de aplicabilitateFn= 0.261 Fn=v/CB= 0.605 CB=Lwl/B= 6.685B/T= 3.228Rezistenta de frecareRn= 1287573428 Rn=vLWL/CF= 0.0015S= 4004.030 mS-aria suprafetei udate a corpului fara apendiciRF= 309.496Factorul de forma al corpului fara apendici(1+K1)= 1.134C14= 0.89Cpp= -10LR= 56.658lcb= -0.471Rezistenta apendicilorSAPP= 17.788 mc= 60.00(1+K2)= 1.4RAPP= 1.925Rezistenta de valC1= 1.208 d= -0.9C2= 0.692 = 0.688C3= 0.038 m1= -2.046C4= 0.04 C16= 1.349C5= 1 m4= -0.059C7= 0.150 C15= -1.694iE= 13.475RW= 140.293Rezistenta de presiune aditionala datorata prezentei bulbuluiPB= 0.611Fni= 1.390RB= 0.022Rezistenta de presiune aditionala datorata pupei oglindaAT= 0 mC6= 0.2FnT= 0RTR= 0Rezistenta aditionala de corelare intre model si navaCA= 0.00043RA= 89.548Rezistenta totala la inaintare a naveiRt= 582.856 kNCoeficientul se siaj Viteza de avansDe= 4.923 m VA= 7.851 m/sC9= 17.299C8= 17.299C20= 0.85C11= 1.429C19= 0.047Cp1= 0.587(1+k)= 1.135CV= 0.00211-Cp1= 0.413w= 0.22129Coeficientul de suctiunet= 0.17301318(B/LWL)0.28956= 0.57687083( 2.56656422Randamentul relativ de rotatiez= 4T= 704.795 NT-impingerea eliceiP0= 100000 N/mPV= 2300 N/mk= 0.1AE/A0= 0.756R= 0.989Puterea efectiva de remorcarePE= 5876.499 kW fara rezerva de proiectarePE= 6464.1489 kW cu fara rezerva de proiectareMD= 0.1Puterea de impingere PT= 5533.43804 kWPuterea eliceiPD= 8836.59923 kWPD= 9769.01767 kW0= 0.63H= 1.062Puterea puterii la flansaPB= 8952.98808 kWPB= 11644.3384 kWax=r 0.994D= 0.665METODA HOLTROP MENNENDate de intrare Coeficienti de derivareLBP= 144.178 m Kx= 1.038Lwl= 151.756 m Ky= 1B= 22.7 m Kz= 0.963T= 7.033 mxb=-1.374 m CM= AM/BTAwl=2645.654 m CM= 0.985AM=157.225 m CW= AWL/LWLBABT=16.378 m CW= 0.768hB=2.216 m Cp== 14668 m Cp= 0.615 1.188E-06 m/sv= 9.568 m/sVerificarea domeniilor de aplicabilitateFn= 0.248 Fn=v/CB= 0.605 CB=Lwl/B= 6.685B/T= 3.228Rezistenta de frecareRn= 1.222E+09 Rn=vLWL/CF= 0.0015S= 4005.074 mS-aria suprafetei udate a corpului fara apendiciRF= 280.585 NFactorul de forma al corpului fara apendici(1+K1)= 1.134C14= 0.89Cpp= -10LR= 56.658lcb= -0.471Rezistenta apendicilorSAPP= 17.788 mc= 60.00(1+K2)= 1.4RAPP= 1.745Rezistenta de valC1= 1.208 d= -0.9C2= 0.692 = 0.688C3= 0.038 m1= -2.046C4= 0.04 C16= 1.349C5= 1 m4= -0.024C7= 0.150 C15= -1.694iE= 13.475RW= 95.872Rezistenta de presiune aditionala datorata prezentei bulbuluiPB= 0.611Fni= 1.339RB= 0.021Rezistenta de presiune aditionala datorata pupei oglindaAT= 0 mC6= 0.2FnT= 0RTR= 0Rezistenta aditionala de corelare intre model si navaCA= 0.00043RA= 80.664Rezistenta totala la inaintare a naveiRt= 496.576 KNMETODA HOLTROP MENNENDate de intrare Coeficienti de derivareLBP= 144.178 m Kx= 1.038Lwl= 151.756 m Ky= 1B= 22.7 m Kz= 0.963T= 7.033 mxb=-1.374 m CM= AM/BTAwl=2645.654 m CM= 0.985AM=157.225 m CW= AWL/LWLBABT=16.378 m CW= 0.768hB=2.216 m Cp== 14668 m Cp= 0.615 1.19E-06 m/sv= 10.597 m/sVerificarea domeniilor de aplicabilitateFn= 0.275 Fn=v/CB= 0.605 CB=Lwl/B= 6.685B/T= 3.228Rezistenta de frecareRn= 1.35E+09 Rn=vLWL/CF= 0.0015S= 4005.074 mS-aria suprafetei udate a corpului fara apendiciRF= 339.903Factorul de forma al corpului fara apendici(1+K1)= 1.134C14= 0.89Cpp= -10LR= 56.658lcb= -0.471Rezistenta apendicilorSAPP= 17.788 mc= 60.00(1+K2)= 1.4RAPP= 2.113Rezistenta de valC1= 1.208 d= -0.9C2= 0.692 = 0.688C3= 0.038 m1= -2.046C4= 0.04 C16= 1.349C5= 1 m4= -0.063C7= 0.150 C15= -1.694iE= 13.475RW= 191.673Rezistenta de presiune aditionala datorata prezentei bulbuluiPB= 0.611Fni= 1.440RB= 0.024Rezistenta de presiune aditionala datorata pupei oglindaAT= 0 mC6= 0.2FnT= 0RTR= 0Rezistenta aditionala de corelare intre model si navaCA= 0.00043RA= 98.944Rezistenta totala la inaintare a naveiRt= 678.314 KNMotor L42MCPB= 11940 KWn= 176 rot/min2.933 rot/secnr.cil= 12PD= 10118.553 KW1 n = ud a d SpDh g p p p + = = )2( 1013370necesaravnavei= 20.5 [Nd]10.545 [m/s]P/D= 0.872 6000700080009000100001100018.6 19 19.4 19.8 20.2 20.6PD[KW] v[Nd] 0.830.830.840.840.850.850.860.860.870.8718.6 19 19.4 19.8 20.2 20.6P/D v[Nd] 3048 . 0 1478 . 0101 . 2 49 . 19365 . 076 . 36 11 . 75 3 . 155100022 . 05 . 03(((

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+ + =AAz z B BBvnDep ppe opt20.6(pres. hidrostatica absoluta la varful superior al palelor elicelor)(din Fig 6.8 Caracteristicile cavitationale ale lui Schoenherr)20) ( 27 . 1 nDpKfAASC E > = uNR.CRT DENUMIRE SIMBOL UNITATE DE VITEZA[Nd]MASURA 18.6 19.6 20.61 Rezistenta la inaintare RtkN 496.576 582.856 678.3142 Coeficientul de siaj w - 0.221 0.221 0.2213 Coeficientul de suctiune t - 0.173 0.173 0.1734 Coeficientul relativ R- 0.994 0.994 0.994de rotatie5 Coeficientul de influentaH- 1.062 1.062 1.062al corpului6 Viteza navei v m/s 9.568 10.082 10.5977 Puterea efectiva PEkW 4751.239 5876.354 7188.0935226.363 6463.990 7906.9030.000100.000200.000300.000400.000500.000600.000700.000800.00018.5 19 19.5 20 20.5 21Rezistenta totala la inaintare GEOMETRIA ELICEIDiametrul elicei (D) 4.814 [m]Numarul de pale (z) 5Raportul de disc (AE/A0) 1.038Raportul de pas (P/D) 0.872br=grosimea palei la raza rbre=distant de la muchia de iesire pana la axa paleibri=distant de la muchia de intrare pana la axa (generatoarea) paleiCr=distant de la muchia de intrare pana la linia grosimilor maximeer= grosimea maxima a sectiunii palei la raza r CONSTRUCTIA CONTURULUI EXPANDAT AL PALEIr/R 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0Latimea palei X11.662 1.882 2.05 2.152 2.187 2.144 1.980 1.582 -br1.661 1.881 2.049 2.151 2.186 2.143 1.979 1.581 -De la generatoarea palei X20.617 0.613 0.601 0.586 0.561 0.524 0.463 0.351 0la muchia de intrare bri1.025 1.153 1.231 1.260 1.226 1.123 0.916 0.555 -De la generatoarea palei bre0.636 0.728 0.817 0.890 0.960 1.020 1.063 1.026 -la muchia de iesireDe la muchia de intrareX30.350 0.350 0.350 0.350 0.389 0.443 0.479 0.500 -la linia grosimilor maxime Cr0.581 0.658 0.717 0.753 0.850 0.949 0.948 0.791 -Grosimea maxima aX40.0366 0.0324 0.0282 0.0240 0.0198 0.0156 0.0114 0.0072 0.0035sectiunii er0.176 0.156 0.136 0.116 0.095 0.075 0.055 0.035 0.0171xzDbr=u2x b br ri =ri r reb b b =3x b Cr r =4x D er =GROSIMEA PALEI -dupa registru CG = factor de marimef1=7.2 pentru elice solidaCG =0.9923f1= factorCDyn = factor dinamicf3= factor f3=0.2ET = factorul stimulant de atacET =0.0000018n = turatia n= 176 [min-1]VS = viteza naveiVS =20.50 [Nd]T=impingerea elicei T= 695.89 [N]w= siajul w= 0.2591.000001f2= factor f2=0.6 pentru nave cu o singura eliceCDyn = 0.5345k = coeficient k= 44K0= 0.5661924H= panta fetei palei elicei H= 4.197808 [mm]e =e= -2.06037610.6= 0.4329200415000cos10nHeK ++ =oc tan = R eDH =53 . 0arctan6 . 0o85 . 02 . 121 . 11>+>D f0 . 15 . 0) 1 / (33 max>++ =ffCmDyno o12max+ =TmE fooTD w n VEST39) 1 (10 3 . 4 ~ = unghiul dintre generatoare si normala = 15K1= 65.35292CW = caracteristica materialului elicei (bronz) CW =630 Hm= 4.197808 [mm]PW= puterea motorului principal PW=PB 11940 [KW]P= 4.197808r/R R B H RBH RB0.2 2.407 1.661 4.197808 16.78275 3.9979790.3 2.407 1.8808 4.197808 19.00429 4.5271940.4 2.407 2.0487 4.197808 20.70074 4.9313220.5 2.407 2.1507 4.197808 21.73073 5.1766860.6 2.407 2.1857 4.197808 22.08416 5.2608790.7 2.407 2.1427 4.197808 21.64995 5.1574410.8 2.407 1.9788 4.197808 19.99389 4.7629360.9 2.407 1.581 4.197808 15.97492 3.8055371.0 2.407 - 4.197808 - -= 157.9214 37.61998t= 863.6co o251cos) sin cos 2 ( 10 + =wmwC z B nHDPK) () (B RH B RHm =Dyn GC C K k K t =1 0Geometria eliceiD= 4.814 [m]z= 5AE/A0== 1.038P/D= 0.872R= 2.407 [m]r/R 0.2 0.3 0.4 0.5 0.6 0.7 0.8x1 1.662 1.882 2.050 2.152 2.187 2.144 1.980Latimea palei br 1.661 1.881 2.049 2.151 2.186 2.143 1.979De la generatoarea palei x2 0.617 0.613 0.601 0.586 0.561 0.524 0.463la muchia de intrare bri 1.025 1.153 1.231 1.260 1.226 1.123 0.916De la generatoarea palei bre 0.636 0.728 0.817 0.890 0.960 1.020 1.063la muchia de iesireDe la muchia de intrarex3 0.350 0.350 0.350 0.350 0.389 0.443 0.479la linia gorsimilor max Cr 0.581 0.658 0.717 0.753 0.850 0.949 0.948Grosimea maxima ax4 0.037 0.032 0.028 0.024 0.020 0.016 0.011sectiunii er 0.176 0.156 0.136 0.116 0.095 0.075 0.055brlatimea palei la raza rbri distanta de la muchia de intrare pana la axa (generatoarea) paleibre distanta de la muchia de iesire pana la axa paleiCr distanata de la muchia de iesire pana la liniagrosimilor maximeer gosimea maxima a sectiuni palei de raza rr raza unei sectiuniR raza corespunzatoare varfului palei masurata pe generatoarec= 1CW= 6301xzDbr=ur rib x b =2ri r reb b b =r rb x C =3D x er =4D= 4814 [m]k= 44R= 2407.000 [m] H=(P/D)*D 4197.808r/R R B H=P/D RBH RB0.2 2407.000 1661 4197.000 16779719319 39980270.3 2407.000 1881 4197.000 19002198699 45275670.4 2407.000 2049 4197.000 20699364771 49319430.5 2407.000 2151 4197.000 21729787029 51774570.6 2407.000 2186 4197.000 22083363294 52617020.7 2407.000 2143 4197.000 21648969597 51582010.8 2407.000 1979 4197.000 19992212241 47634530.9 2407.000 1581 4197.000 15971544999 38054671 2407.000 - 4197.000 - - 1.57907E+11 37623817H= 4197.808Hm= 4197.000 [mm]0.6= 0.433 [grd]0.0076 [rad]t= 99.880 [mm]0.0998 [m]k= 44K0= 1.271= 15 [grd]0.262 [rad]e= 644.904 [mm] =) () (B RH B RHmDH =53 . 0arctan6 . 0oDyn GC C K k K t =1 015000cos10nHeK ++ =oc tan = R eco o251cossin cos 2 10 ||.|

\|+ =WmWC z B nHDPKK1= 1.556CW =630PW=PB 11940 [kw]B= 2185.658 [mm]CG= 0.992f1= 7.2CDyn= 1.156f3= 0.2max/m= 1.762f 2= 0.4ET= 1.904T= 695888 [N]co o251cossin cos 2 10 ||.|

\|+ =WmWC z B nHDPK85 . 02 . 121 . 11>+>D f( )0 . 15 . 01 /33 max>++ =ffCmDyno o12max+ =TmE fooTD w n VEST39) 1 (10 3 . 4 =0.9 11.582 -1.581 -0.351 0.0000.555 0.0001.026 -0.500 -0.791 -0.007 0.0040.035 0.017TABELUL ORDONATELOT PENTRU ELICEPOZITIA ORDONATEI MASURATA IN PROCENTEr/R De la grosimea maximala mucia de iesire100 80 60 40 20 200.2 53.35 72.65 36.90 96.45 98.600.3 50.95 71.60 86.80 96.80 98.40Ordonatele 0.4 47.70 70.25 86.55 97.00 98.20dosului 0.5 43.40 68.40 86.10 96.95 98.10palei 0.6 40.20 67.15 85.40 96.80 98.100.7 39.40 66.90 84.90 96.65 97.600.8 40.95 67.80 85.30 96.70 97.000.9 45.15 70.00 87.00 97.00 97.000.2 30.00 18.20 10.90 5.45 1.55 0.450.3 25.35 12.20 5.80 1.70 0.05Ordonatele 0.4 17.85 6.20 1.50fetei 0.5 9.70 1.75palei 0.6 5.100.70.80.9Distanta de la grosimea maxima la muchia de intrarer/R=0.2 20 40 60 80 90Cr= 0.581 x= 0.1163 0.2325 0.3488 0.4651 0.5232er= 0.176 ys= 0.1735 0.1663 0.1531 0.1309 0.1133yF= 0.0008 0.0040 0.0104 0.0237 0.0357r/R=0.3 20 40 60 80 90Cr= 0.658 x= 0.1317 0.2633 0.3950 0.5266 0.5925er= 0.156 ys= 0.1535 0.1466 0.1338 0.1131 0.0977yF= 0.0001 0.0020 0.0072 0.0169 0.0258r/R=0.4 20 40 60 80 90Cr= 0.717 x= 0.1434 0.2868 0.4302 0.5736 0.6454er= 0.136 ys= 0.1336 0.1268 0.1146 0.0957 0.0818yF= 0.0000 0.0004 0.0036 0.0106 0.0170r/R=0.5 20 40 60 80 90Cr= 0.753 x= 0.1505 0.3011 0.4516 0.6022 0.6775er= 0.116 ys= 0.1138 0.1072 0.0955 0.0785 0.0659yF= 0.0000 0.0000 0.0008 0.0050 0.0098r/R=0.6 20 40 60 80 90Cr= 0.850 x= 0.1700 0.3401 0.5101 0.6802 0.7652er= 0.095 ys= 0.0932 0.0867 0.0754 0.0604 0.0496yF= 0.0000 0.0000 0.0000 0.0008 0.0042r/R=0.7 20 40 60 80 90Cr= 0.949 x= 0.1898 0.3797 0.5695 0.7594 0.8543er= 0.075 ys= 0.0732 0.0666 0.0562 0.0428 0.0332yF= 0.0000 0.0000 0.0000 0.0000 0.0003r/R=0.8 20 40 60 80 90Cr= 0.948 x= 0.1896 0.3791 0.5687 0.7583 0.8531er= 0.055 ys= 0.0532 0.0468 0.0377 0.0265 0.0190yF= 0.0000 0.0000 0.0000 0.0000 0.0000r/R=0.9 20 40 60 80 90Cr= 0.791 x= 0.1581 0.3162 0.4743 0.6324 0.7115er= 0.035 ys= 0.0336 0.0302 0.0243 0.0156 0.0104yF= 0.0000 0.0000 0.0000 0.0000 0.0000Distanta de la grosimea maxima la muchia de iesirer/R=0.2 20 40 60 80 100Cr= 0.581 x= 0.2159 0.4319 0.6478 0.8637 1.0797er= 0.176 ys= 0.1698 0.0649 0.1279 0.0939 0.0000br= 1.661 yF= 0.0027 0.0096 0.0192 0.0320 0.0528r/R=0.3 20 40 60 80 100Cr= 0.658 x= 0.2445 0.4891 0.7336 0.9782 1.2227er= 0.156 ys= 0.1510 0.1354 0.1117 0.0795 0.0000br= 1.881 yF= 0.0000 0.0027 0.0090 0.0190 0.0395r/R=0.4 20 40 60 80 100Cr= 0.717 x= 0.2664 0.5328 0.7992 1.0656 1.3319er= 0.136 ys= 0.1319 0.1177 0.0955 0.0649 0.0000br= 2.049 yF= 0.0000 0.0000 0.0020 0.0084 0.0243r/R=0.5 20 40 60 80 100Cr= 0.753 x= 0.2797 0.5593 0.8390 1.1186 1.3983er= 0.116 ys= 0.1125 0.0999 0.0793 0.0503 0.0000br= 2.151 yF= 0.0000 0.0000 0.0000 0.0020 0.0113r/R=0.6 20 40 60 80 100Cr= 0.850 x= 0.2672 0.5343 0.8015 1.0686 1.3358er= 0.095 ys= 0.0920 0.0811 0.0638 0.0382 0.0000br= 2.186 yF= 0.0000 0.0000 0.0000 0.0000 0.0048r/R=0.7 20 40 60 80 100Cr= 0.949 x= 0.2388 0.4775 0.7163 0.9550 1.1938er= 0.075 ys= 0.0725 0.0637 0.0502 0.0296 0.0000br= 2.143 yF= 0.0000 0.0000 0.0000 0.0000 0.0000r/R=0.8 20 40 60 80 100Cr= 0.948 x= 0.2062 0.4125 0.6187 0.8249 1.0312er= 0.055 ys= 0.0531 0.0468 0.0372 0.0225 0.0000br= 1.979 yF= 0.0000 0.0000 0.0000 0.0000 0.0000r/R=0.9 20 40 60 80 100Cr= 0.791 x= 0.1581 0.3162 0.4743 0.6324 0.7905er= 0.035 ys= 0.0336 0.0302 0.0243 0.0156 0.0000br= 1.581 yF= 0.0000 0.0000 0.0000 0.0000 0.0000POZITIA ORDONATEI MASURATA IN PROCENTEDe la grosimea maximala mucia de intrare40 60 80 90 95 10094.50 87.00 74.40 64.35 56.95 -94.00 85.80 72.50 62.65 54.9093.25 84.30 70.40 60.15 52.2092.40 82.30 67.70 56.80 48.6091.25 79.35 63.60 52.20 43.3588.80 74.90 57.00 44.20 35.0085.30 68.70 48.25 34.55 25.4587.00 70.00 45.15 30.10 22.002.30 5.90 13.45 20.30 26.20 40.001.30 4.60 10.85 16.55 22.20 37.550.30 2.65 7.80 12.50 17.90 34.500.70 4.30 8.45 13.30 30.400.80 4.45 8.40 24.500.40 2.45 16.050.7095 1000.5523 0.17600.1002 0.00000.0461 0.070495 1000.6254 0.15600.0856 0.00000.0346 0.058695 1000.6812 0.13600.0710 0.00000.0243 0.046995 1000.7151 0.11600.0564 0.00000.0154 0.035395 1000.8077 0.09500.0412 0.00000.0080 0.023395 1000.9017 0.07500.0263 0.00000.0018 0.012095 1000.9004 0.05490.0140 0.00000.0000 0.000495 1000.7510 0.03470.0076 0.00000.0000 0.0000