ELECTRIC SNOOPY 



ELECTRIC SNOOPY, the successor of SNOOPY, principally differs from its pre- 

 decessor in its propulsion scheme. This experimental vehicle (figure 6) uses three %-horse- 

 power, oil-filled, pressure-balanced electric motors for thrust in the horizontal and vertical 

 directions. This approach allows the use of a small-diameter l A inch (0.6 centimeter), 

 1500-foot (457 meters), coaxial-tether cable. AC power, along with multiplexed control 

 signals, is sent down the cable and converted to variable, DC-motor-driven voltage through 

 motor controllers. A single joystick controls forward, reverse, and turning motions. Twin 

 pressure hulls house all vehicle electronics, a television camera, and a super-8 movie camera, 

 all of which provide a streamlined and responsive vehicle. The super-8 camera provides 

 intervals of action footage or a large number of individual-frame photographs. A single 

 light illuminates both the television and film cameras. The 1.5- by 2.0- by 3.0-foot-long 

 (0.5 by 0.6 by 0.9 meters) vehicle weighs 1 50 pounds (68 kilograms) in air and operates to 

 depths of 1500 feet (460 meters). 



When used in conjunction with a small buoyant reel, ELECTRIC SNOOPY has 

 demonstrated that it can be used to attach a light line to a seafloor object, such as a 

 stricken manned submersible, so that a heavy lift line with a "go-getter" can be guided to 

 a hard point for surface lift. 





Figure 6. Electric SNOOPY. 



