14 



THE NAVY OCEAN ENGINEERING PROGRAM 



•VARIABLE 

 BALLAST TAN> 



MAIN PROP — I 

 CONTROLLER 



ALLAST TANK 



MAIN BATTERIES 



MERCURY TRIM 

 TANK 



AFT THRUSTER 

 DUCTS 



HYDRAULIC 

 POWER UNIT 



HYDRAULIC 

 POWER UNIT 



FWD THRUSTER 

 DUCTS 



TRANSFER TANK 

 FWD T-V CAMERA UNIT 

 MANIPULATOR 



Deep Submergence Rescue Vehicle (DSRV), arrangement of major components 



The DSRV propulsion and maneuvering system was designed to gain 

 this capability. The DSRV's stern propeller and four ducted thrusters pro- 

 vide power in any of five degrees of freedom— pitch, yaw, surge, heave, and 

 sway. The sixth degree of freedom, that of roll, is controlled by a mercury 

 trim-and-list system. 



To provide the pilots with the precise control required in this difficult 

 maneuver, an Integrated Control and Display System (ICAD) has been 

 developed to permit two operators to control this vehicle. All sensing, 

 navigation, and propulsion equipment will provide electrical signals into a 

 computer in the ICAD. To control the vehicle, the pilot and copilot will 

 command direction and rate, and the computer will translate and transmit 

 their control signals to the inidvidual propulsion control units. 



The next step in the mating sequence brings touchdown. To prevent 

 excessive impact stresses or damage to the hatch seat, a hydraulic shock- 

 attenuation system has been developed. 



DEEP SUBMERGENCE SEARCH VEHICLE (DSSV) 



The design of the DSSV incorporates many developments from the 

 DSRV, but further advancements in materials, structures and power 

 supplies will be required. The primary mission of the DSSV is underwater 

 search with an additional mission for small-object recovery. 



