454 



36 



1.00 



0.90 



0.80 



£ 0.70 



E 0.6 



0.50 



0.40 ^ 



12 16 20 24 



dj , Charge Oistonce in inches 



28 



32 



Figure 30 - Time ^ Plotted against Charge Distance 



(« is the time at which an additional blow is received at the center of the diaphragm, 

 is supposedly caused by the closing up of the cavitated region in the water. 



This blow 



2.4 



2.0 



1.6 



Z 1.2 



0.8 



0.4 



; ^i 1 . 



12 16 20 24 



dg , Charge Distance in inches 



28 



32 



Figure 31 - The Central Deflection Zq^ after the Cavitation Blow Has Been 

 Received and the Diaphragm Has Reached Its Maximum Deflection 



