Assemble body data in potential flow program (PF) format 



Check data and correct as necessary using computer graphics 



Execute first section of PF program (PF1 ) to organize data 

 and make preliminary calculations 



Check results, make corrections and rerun PF1 as necessary 



Execute program RITPNT which 

 defines field points for propeller 

 calculation 



Execute second section of 

 potential flow program (PF2) 

 to calculate the influence 

 coefficients 



Assemble propeller geometry and loading data 



Execute FPV program to determine the propeller-induced 

 velocities at the ship hull 



Execute program COMPVN to calculate the normal component of the 

 propeller-induced velocity at each quadrilateral centroid 



Execute the third and fourth sections of the potential flow 

 program (PF3 and PF4) to determine the panel source strengths 

 and make velocity and pressure calculations 



Execute program CALCTD to compute the interaction force between 

 propeller and hull 



If the interaction force due to another propeller design is 

 to be computed, repeat the above five steps 



Figure 5 - Interaction Analysis - Computational Procedure 



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