1.5 



1.4 



1.3 



1.2 



1.1 



1 T 



LIFTING-LINE DESIGN 



Figure 20 - Pitch-Diameter Ratio of Model 3870 (Case 1) 



1.5 



1.4 



-5- 13 



1.2 



1.1 



i 1 r 



LIFTING-LINE DESIGN 



Figure 21 - Pitch-Diameter Ratio of Model 3870 (Case 2) 



53 



