10 



ON RIFLED GUNS. 





Pi- g- *■ p 2 



W. V 3 . £■ cot. 1 ir. ? 



7>i. £. -. /v 2 + W. V 2 . - cot. 30° : 



A = 



*1 3 



_2 



sin 30° 

 n 



I 

 P 



1 + A. A-j 3 . — — -. sin 30° 

 n. 1. 1> 



Pi 8- -■ l' 2 + W. V 2 . £- cot. 30° 

 siu 30° 



/• 2 

 ''1 



P 



n 

 I 

 S 



I fP >F 





(12) — Let us now compute the strains when the missile has reached the mouth of the 

 gun. For this purpose Eqs. (25), (26), (27), and (28) are applicable. 

 (322) 



