Fig 10. 
EEE 
Pe 
  
A typical fringe pattern observed 
during reconstruction of a double- 
exposure hologram recording the 
airfoil No. 
torsional load applied at tip of 
the blade 
dub 
in 
  
  
  
  
  
  
l acted upon by a 
29 
   
      
  
     
< = 
x 03\ 04 05 0.6 
   
  
  
-0.5: -0.4 -0.3 -0.2 -Ql 
N x/CORD 
0.1 [- 
; x 
02H > 
INITIAL POSITION S 
———F POSITION - : o3- 
HOLOGRAPHIC 
ANALYSIS v 
04r 
0.5- 
Fig 11. Deflections of airfoil No. 1 due to 
torsional load applied at tip, as 
determined from holograms at level 26 
     
  
— 
— 
1 laci l 
-05 -O4 -O3 -02 
  
  
INITIAL POSITION 
— —— FINAL POSITION- 
HOLOGRAPHIC 
ANALYSIS 
os 
Fig 12. Deflections of airfoil No. 1 due to 
torsional load applied at tip, as 
determined from holograms at level 11