Recent Progress in the Calculation of Potential Flows 



Charts 



Charts have been drawn for the shapes listed in Tables 1 and 2. The double 

 wedge was chosen to provide a low block coefficient and the semicircle-flat body 

 to provide a high block coefficient. The ellipse is a natural intermediate case. 

 The same three profile families were used in the axisymmetric problem. A total 

 of 111 charts are required to cover the configurations listed in the tables. Two 

 sets are presented, Figs. 13 and 14, one for the NACA 65(1)-412 airfoil and the 

 other for the 12-percent-thick hemisphere-cylinder body of revolution. The 

 fields for the NACA 65(1)-412 airfoil are defined by 2632 points. For the bodies 

 having double symmetry about 1/4 this number were used. It is informative to 

 compare the two sets and see how much less the disturbances at some distance 

 from the body are for the body of revolution. 



Table 1 Two-Dimensional Bodies for Which Flow-Field Charts 

 Have Been Computed 



Body Type 



Thickness 

 Ratio t^c 



Body Profile 



Elliptic cylinder 



0.06 



0.12 



0.18 



Double wedge 



0.06 



0.12 



0.18 



Double semicircle- 

 flat body 



0.06 

 0.12 



0.18 



-(ZZ 



<1 



z> 



3 



NACA 65(1)-012 

 Airfoil 



341 



