LIST OF FIGURES 



Page 



1 - Hull and Propeller Geometry 34 



2 - Components of Blade Loading 35 



3 - Hull and Dynamometer Boat 36 



4 - Block Diagram of SERVOMECHANISM for Pitching Model at Specified 



Phase Relative to Waves 37 



5 - Experimental Data Showing Plus and Minus 1.96 Standard Deviations 



on Measured Values of F 37 



X 



6 - Distribution of Wake in Propeller Plane 37 



7 - Open-Water Characteristics of DTNSRDC Model Propellers 4710 



and 4711 38 



8 - Influence of Extraneous Signals on Measured Loads 38 



9 - Experimental Data Showing Extraneous Higher Harmonics . 39 



10 - Variation of Experimental Hydrodynamic Loads with Angular Position 



for Simulated Propulsion in Calm Water without Hull Pitching 39 



11 - Variations of Hydrodynamic Loads with Hull Pitch Cycle for 



Operation in Calm Water 40 



12 - Variation of Fx with Blade Angular Position for Hull Pitching in 



Calm Water Showing Portions of the Hull Pitch Cycle with 



Extremes of Peak Loading 41 



13 - Afterbody of Hull Showing Propeller Disk 41 



14 - Variations of the Harmonic Amplitudes of F^^ During the Hull Pitch 



Cycle in Calm Water 42 



15 - Variations of Hydrodynamic Loads with Location in Wave Cycle for 



Operation Without Hull Pitching 43 



16 - Variation of F^ with Blade Angular Position for Operation in 



Waves Without Hull Pitching Showing Selected Locations in 



Wave Cycle Illustrating Extremes of Variation in Loading 44 



17 - Variations of Harmonic Amplitudes of Fx During Wave Cycle 



Without Hull Pitching 45 



