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ITTC – Recommended Procedures Performance, Propulsion 1978 ITTC Performance Prediction Method 7.5 – 02 03 – 01.4 Page 6 of 31 Effective Date 1999 Revision 00 for the delivered power. Trial prediction with ∆C FC - ∆w C corrections If CHOICE=1 the final trial predictions are calculated as follows: K J = S . C T TS 2 2D 2 1 + ∆C ( 1 − t)( − w + ∆w ) 2 With this K T /J² as input value, J TS and K QTS are read off from the full scale propeller characteristics and n P T DT ( 1 − w + ∆w ) TS FC TS C VS = (r/s) J . D = 2 TS K 5 3 QTS −3 π . ρ. D . nT . .10 (kW) η RM Trial prediction with C NP correction If CHOICE = 2 the shaft rate of rotation is predicted on the basis of power identity as follows. ⎛ KQ ⎞ ⎜ J ³ ⎟ ⎝ ⎠ T 1000. C P . PDS = 3 2π . ρ. D² V ( 1 − w )³ S TS C 2.5 Analysis of Speed Trial Results The analysis of trials data is performed in a way consistent with performance prediction but starting P D and n backwards, i.e. from K Q PD = 2π . ρ. D . n . η 5 3 RM .10³ J S is obtained from the full-scale open-water characteristics K Q ≈ J S then w = 1 − J . n. D T S / Further from K T ≈ J S characteristics T = K T . ρ. n² D ( 1 − t) T. C T = 1 . ρ. V ². S 2 Then we obtain ∆ C = C − C ∆ w FC C = w 2.6 Input Data T TS 4 − w Input data sheets are given in ENCL.1 TS T V K Q0 J ³ ⎛ K = ⎜ ⎝ J Q ⎞ ⎟ ⎠ T .η RM ( 1 − w )/ J D nS = VS TS TS . n = C T NP n S 2.7 Output Data - Output data I gives ITTC Standard Prediction with C P = C N = 1.0, together with model and full scale propulsive coefficients (ENCL. 4). - Output data II gives the final ship prediction (ENCL. 5).
ITTC – Recommended Procedures Performance, Propulsion 1978 ITTC Performance Prediction Method 7.5 – 02 03 – 01.4 Page 7 of 31 Effective Date 1999 Revision 00 - Output data III gives the analysis of the speed trial results (ENCL. 6). 2.8 Test Example To illustrate the program a prediction was made for a hypothetical ship with the following particulars: length between perpendiculars Lpp = 251.5m breadth B = 41.5m draft T = 16.5m propeller diameter D = 8.2m Calculations were carried out with the ITTC Trial Prediction Test Program with: C P = 1.01 C N = 1.02 The input data were taken as shown in ENCL. 1 and the printout of the input data and results are given in ENCL. 4 - 6.
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Hidrodinâmica e Propulsão Engenha
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ii ÍNDICE 3.3.2 Coeficiente de car
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iv LISTA DE FIGURAS 3.8 Geometria d
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vi LISTA DE TABELAS
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2 CAPÍTULO 1. INTRODUÇÃO Figura
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6 CAPÍTULO 1. INTRODUÇÃO Tipo de
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12 CAPÍTULO 1. INTRODUÇÃO
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14 CAPÍTULO 2. RESISTÊNCIA Resolv
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16 CAPÍTULO 2. RESISTÊNCIA Força
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18 CAPÍTULO 2. RESISTÊNCIA Se int
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20 CAPÍTULO 2. RESISTÊNCIA Nos es
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22 CAPÍTULO 2. RESISTÊNCIA Figura
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24 CAPÍTULO 2. RESISTÊNCIA - se V
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26 CAPÍTULO 2. RESISTÊNCIA Figura
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28 CAPÍTULO 2. RESISTÊNCIA - o m
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30 CAPÍTULO 2. RESISTÊNCIA - dete
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32 CAPÍTULO 2. RESISTÊNCIA Resist
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34 CAPÍTULO 2. RESISTÊNCIA a prec
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36 CAPÍTULO 3. PROPULSÃO - um hé
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38 CAPÍTULO 3. PROPULSÃO Figura 3
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40 CAPÍTULO 3. PROPULSÃO são con
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42 CAPÍTULO 3. PROPULSÃO - e a ra
Page 52 and 53: 44 CAPÍTULO 3. PROPULSÃO Por fim,
Page 54 and 55: 46 CAPÍTULO 3. PROPULSÃO - a velo
Page 56 and 57: 48 CAPÍTULO 3. PROPULSÃO Série N
Page 58 and 59: 50 CAPÍTULO 3. PROPULSÃO Figura 3
Page 60 and 61: 52 CAPÍTULO 3. PROPULSÃO - veloci
Page 68 and 69: 60 CAPÍTULO 3. PROPULSÃO No entan
Page 70 and 71: 62 CAPÍTULO 3. PROPULSÃO de Reyno
Page 72 and 73: 64 CAPÍTULO 3. PROPULSÃO Ou seja,
Page 74 and 75: 66 CAPÍTULO 3. PROPULSÃO 3.8.3 Ex
Page 76 and 77: 68 CAPÍTULO 4. INSTALAÇÕES PROPU
Page 92 and 93: Índice Remissivo Auto-propulsão,
Page 94 and 95: 86 ÍNDICE REMISSIVO
Page 96 and 97: 88 APÊNDICE A. PREVISÃO BASEADA N
Page 98 and 99: ITTC - Recommended Procedures Perfo
Page 128 and 129: 120 APÊNDICE A. PREVISÃO BASEADA
Page 130 and 131: 122 APÊNDICE B. PROVAS DE VELOCIDA
Page 132 and 133: ITTC - Recommended 7.5-04 -01-01.1
Page 142 and 143: 134 APÊNDICE C. CONDIÇÕES DAS PR
Page 144 and 145: ITTC -Recommended Procedures Full S
Page 150 and 151: 142 APÊNDICE D. SELECÇÃO DE MOTO
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Basic Principles of Ship Propulsion
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Indication of a ship’s size Displ
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For bulkers and tankers, this coeff
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kW 8,000 Propulsion power "Wave wal
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manoeuvrability. For ordinary ships
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As can be seen, the propulsive effi
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As an example for an 80,000 dwt cru
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15.0 knots 115% power B Power B´ 1
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Engine shaft power, % A 110 100 90
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Power Engine margin (10% of MP) Sea
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peller curve (line 1) - the layout
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The recommended use of a relatively
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drawn in Fig. 22b. Point M is found
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charger etc. according to a propell
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174 APÊNDICE D. SELECÇÃO DE MOTO
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176 APÊNDICE E. DERATING
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Engine power, %R1 100 R1 R1+ Engine
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Case 1: Suezmax tanker & Capesize b
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Case 2: Panamax container ship In t
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Case 3: Post-Panamax container ship
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Case 4: Derating without adding an
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