Transactions Socicly Naval Archikcls and Marine Engineers, Vol. 20, igi2. 



To illiislmte paper on "Active Type of Stabilizing Gyro,' 

 by Elmer A Sperry, Esq., Member. 



Plate 80 



5 



Tanks ouf" 

 of ^cfion. 



^^M/W\^ 



All fanks 

 in acfi'on. 



^AA/■l<^;" ' V\A/W^ 



FJgure 4? 

 Froni ,6° to B° rolling 

 ihcrenne.ni. Period 

 of- sea out of synch ron 

 •^tsrn wi-th period' of 



Tanks ou^ 

 of a ci ion. 



All fsnks 

 in sch'on 



Figure, 5 <, 

 From l^^fol^ r-otling 

 increment. Perrad 

 of >sea ouf of synchron 

 -ism wi-lh period of 

 ship. Abou^ l?foJ4% 



Tanks Ouf All tanks 

 of acf/on. in acfion. 



Tanks ouf 

 of action. 



All tanks 

 in action. 



20"-^= 



■JO'-^ 



10°- = 



eo'-^ 



1 



Figure 6 

 From ?,5°to 3.5 rolling 

 increment. Period of 

 sea out of •synchron- 

 >sm with period of 

 -ship tZdfo 



Figure T 

 Fr om 4" to 5° rolling 



increment. Period of 

 ■se3 out of synchron- 

 ism with period of 

 ship Q^% 



Figs. 4, 5, 6 and 7— Curves Showing Action of Damping Tanks. 



