Page 



EXPERIMENTAL PROCEDURE 34 



PRESENTATION OF DATA AND DISCUSSION 34 



CONCLUSIONS 35 



ACKNOWLEDGMENTS 36 



APPENDIX A - CAVITY BOUNDARY CONDITION .... 79 



APPENDIX B - LEADING-EDGE SOURCE 81 



REFERENCES 83 



LIST OF FIGURES 



1 - Coordinate Systems for Blade Surface of Reference 37 



2 - Example of Relation Between Choked Flow Cavitation 



Number and Leading-Edge Thickness of Super - 



cavitating Cascade for Blade Sections of 



Supercavitating Propeller Model 3770 38 



3 - Example of Cascade Parameters for Supercavitating 



Propeller Model 3770 38 



4 - Flow Chart for Lifting-Surface Design of 



Supercavitating Propellers 39 



5 - Computed Camber Correction Factors c of Super- 



cavitating Propeller Model 4717 for Different 



Angular Intervals 5 and Cavity Truncation 



Points I 40 



6 - Computed Pitch-Diameter Ratio of Supercavitating 



Propeller Model 4717 for Different Angular 



Intervals 6 and Cavity Truncation Points I 41 



7 - Computed Shape of Blade Face of Model 4717 at 



r/R =0.8 for Two Numbers of Collocation 



Points 42 



8 - Computed Shape of Blade Face of Model 4717 at 



r/R = 0.3978 for Two Numbers of Collocation 



Points 42 



9 - Cavity Boundary Conditions without Hub Image and 



w ith Cubic Polynomial Source of Model 4717 43 



