Textos de Apoio (pdf)

ITTC – Recommended
Procedures
Performance, Propulsion
1978 ITTC Performance Prediction
Method
7.5 – 02
03 – 01.4
Page 1 of 31
Effective Date
1999
Revision
00
CONTENTS
1. PURPOSE OF PROCEDURE
2. DESCRIPTION OF PROCEDURE
2.1.1 Introduction for the Original 1978 ITTC Performance Prediction Method
for Single Screw Ships
2.1.2 Introduction for the 1978 ITTC Performance Prediction Method as Modified
in 1984 and 1987
2.2 Model Tests
2.3 Analysis of the Model Test Results
2.4 Full Scale Predictions
2.4.1 Total Resistance of Ship
2.4.2 Scale Effect Corrections for Propeller Characteristics.
2.4.3 Full Scale Wake and Operating Condition of Propeller
2.4.4 Model-Ship Correlation Factors
2.5 Analysis of Speed Trial Results
2.6 Input Data
2.7 Output Data
2.8 Test Example
3. PARAMETERS
3.1 Parameters to be Taken into Account
3.2 Recommendations of ITTC for Parameters
3.3 Input Data
4. VALIDATION
4.1 Uncertainty Analysis
4.2 Comparison With Full Scale Results
5. ITTC- 1978 PERFORMANCE PREDICTION METHOD (COMPUTER CODE)
COMMENTS OF PROPULSION COMMITTE OF 22 nd ITTC
In its original form the ITTC 1978 Performance Prediction Method offers a valuable and reasonably
accurate prediction tool for reference purposes and conventional ships.
Edited by 22 nd ITTC QS Group 1999
15 th ITTC 1978 pp388 – 402
17 th ITTC 1984 pp326 - 333
18 th ITTC 1987 pp266 - 273
Date
Approved
Date
15 th ITTC 1978, 17 th ITTC 1984
and 18 th ITTC 1987