20 30 



80 90 



IN DEGREES 



Figure 15 — Comparison of Measured Midbay Stresses on Inside Surface of a Quadrant 

 of Shell of Models EC-1 and EC-IB 





-• MAJOR AXIS 



^ R, = 8 81" ^ 



__ ^^ MINOR AXIS ~ 



R = 24,16" , 





h = 0,211" ^ 



h = 0.385" 



c 



^ 









/ 



/ / 





-Q- LONG,/ 



i 



' — --- 



■""• 



o 





^ 



y 





V 









-•- 





M-' ^ 



1 



V 



--■ 



■- 





'D 







\ 



isw D 



^^Hrrrzfl 



















> 







1 



|_ 



















^V 





























b^ 



B IN DEGREES 



Figure 16 — Comparison of Measured Midbay Stresses on Outside Surface of a Quadrant 

 of Shell of Models EC-1 and EC-IB 



21 



