13 



-|N 



0.8 

 0.6 



\ 





















\ 























V 





o Electrolytic Tank Values 











0.4 





\ 





Ttieoretical Curve 













\ 



^ 



/ 















0.2 





\ 



/ 



















^ 



y 

























\o 





















\ 

















-0.2 







\ 



3 

























































-0.6 





















































O 



\ 











-08 

 -1.0 













\ 





















"^ 



X^ 





















\ 

























^^^^C 







-1.2 



















~-. 





















-^ 



~~-T!— 



0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 



Figure 7 - Pressure Distribution About a Sphere 



potential could be read to five significant figures, with some uncertainty in the last place. 

 The potential was determined all along the contour in increments of 0.01 in. in the x direction. 

 Since the arc length s as a function of x is known for a sphere, V was plotted directly as a 

 function of s on a scale large enough to include all the significant figures of the measure- 

 ments, and a faired curve was drawn through the points. The slopes at representative points 

 were computed by the extrapolation method described in Appendix A, using points from a faired 

 curve through the experimental points. The tangential velocity coefficients obtained from 

 these slopes using Equation [17] and the pressure coefficients obtained from Equation [18] are 

 recorded in Table 1 together with the theoretical values. Graphs of the velocity and pressure 

 coefficients are shown in Figures 6 and 7. 



