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SUMMARY 40 



CONCLUSIONS 42 



RECOMMENDATIONS 43 



ACKNOWLEDGMENTS 44 



APPENDIX - COMPARISON OF MEASURED AND DESIGN GEOMETRY OF 



PROPELLER 4718 45 



REFERENCES 217 



LIST OF FIGURES 



1 - Drawings of DTNSRDC Model Propellers 4679 and 4718. 52 



2 - Photographs of DTNSRDC Model Propellers 4679 and 4718 54 



3 - Schematic of Test Arrangement Showing 1000 Horsepower Dynamometer .... 55 



4 - Approximate Location of Pressure Transducers 56 



5 - Configurations for Mounting Transducers in Helmholtz Cavities 57 



6 - Schematic of Instrumentation for Typical Pressure Transducer 



Channel 58 



7 - Variation of Mean Loading Pressure Coefficient with Advance 



Coefficient for Propeller 4718 59 



8 - Variation of Mean Loading Pressure Coefficient with Inflow 



Speed for Propeller 4718 at Design J 63 



9 - First Harmonic Pressure Coefficients with Propeller 4718 Inclined 



7.5 Degrees at Design J; Comparison of Uncorrected with 



Approximate Loading Corrected Results 66 



10 - First Harmonic Pressure Coefficients with Propeller 4679 Inclined 



7.5 Degrees at Design J; Comparison of Uncorrected with 



Approximate Loading Corrected Results 70 



11 - Average Distribution of C at Design J for Propellers 4718 and 



4679 Over a Range of Reynolds Numbers 74 



iv 



