Figure 19 (Continued) 



-0.2 — 



IO 



-0.1 - 



IO 



0.1 



I I I I I I I I I I I I I I I I I I I 



0.2 



0.4 0.6 



x/c 



0.8 



1.0 



Figure 19c - r/R =0.9 



136 



