Projectile Velocity (ft/sec) 

 240 280 320 360 



10,000 

 20,000 



2.25 ^ 

 charge 

 weight 



2.5 



2.75 



3.0 



3.25 



1 

 3.5 



3.75 



1 



- 



1 



1 



I 



1 \ u 



\ \ \ \ \ I 

 \ \ \ \ \ '^\ 



\ \ \ \ i^ - 



\ \ \ y'^X 



1 1 \ \ 1 \ iX \ 



(a) 300-pound, 1-1/2 x 3-foot sand fluke 

 or rock fluke. 



Projectile Velocity (ft/sec) 

 240 280 320 360 



100 



2.25 



>■ 



charge 

 weight 



2.5 



2.75 



3.0 



3.25 



3.5 



1 ' 

 1 



1 



1 













D 





f 1,000 



1 





\\\ 



1 



1 





\\ \ 



\ '1' 



\ °l 



\ 



10,000 



\ \ 



\ \ / \ 



20,000 



\ ,\ 



vA 



(b) 370-pound, 2 x 4-foot clay fluke. 



Projectile Velocity (ft/sec) 

 240 280 320 



100 



2.25 



2.5 



1 

 2.75 



3.0 



3.25' 



charge 

 weight 



' 1,000 



- 



\ 



\ 



i 



y 



S, j 



\ 



10,000 



■ \ ^ 



\\ 



- 



20,000 



\l 



X A 



1 



Charge Weight (lb) 

 2.8 3.2 3.6 



(c) 490-pound, 2-1/2 x 5-foot clay fluke. 





1 1 II 

 / / "^ / 





4,000 



c?/ o / o/ 





8,000 



^ i i 



" 









-s ^ / i/ 







•^ o/ :: 







*^/ 'S s 







^ i ■>°/ 





12,000 



■^ / .V / '*' 



/ / ^/ 





16,000 



/ 1 \ 1 \ 1 





Figure 12. Projectile velocity versus water depth 

 for various charge weights using 

 0.074-inch web PYRO. 



Figure 13. Charge weight versus water depth 

 for peak gun performance using 

 0.074-inch web PYRO. 



12 



