Vehicle Dynamios Associated with Submarine Rescue 



and list (T, , Tg, and T3) system tanks. Fig. 2. 



The variable ballast tanks (6, 7) are hard tanks each with a 

 capacity of 500 pounds of seawater. Water can be transferred to and 

 from the sea from either or both tanks at a rate of 2 gallons per 

 minute. 



The mercury trim system is a set of two tanks (4»5) con- 

 taining 225 pounds of mercury and 15 pounds of oil. A pumping rate 

 of 3 gallons per minute provides a net weight change of 5,3 pounds 

 per second between the two tanks. With the list system reservoir 

 full (Zq mLeiximum) a 23 degree trim angle Is attainable. 



T2&T3 



o 



T1 LIST SYSTEM RESERVOIR 



T2 STARBOARD LIST TANK 



T3 PORT LIST TANK 



T4 FORWARD TRIM TANK 



T5 AFT TRIM TANK 



16 FORWARD VARIABLE BALLAST TANK 



17 AFT VARIABLE BALLAST TANK 



o h 



^G W +^W.. 



Z {W W ) 

 7 =7 + n n - no 

 ■^G ^GO W~+TWT" 



o U 



Fig, 2. DSRV Trim and List System Tanks 



The list system consists of three spherical tanks each with a 

 capacity of 2780 pounds of mercury. The two list tanks (2, 3) are 

 located 2,2 feet above the vehicle centerllne and are separated by 

 4,4 feet. The reservoir (i) is located 3 feet below the centerllne. 

 The configuration of the list system piping and valvlng Is shown In 

 Fig. 3, It Is noted that transfer can be effected between list tanks, 

 between each list tank and reservoir and between the two list tanks 

 tied together and the reservoir. Pumping rate can be varied between 



1119 



