Mr. G. Pallange (Lockheed Missiles and 

 Space) in November 1968. 



Obviously, the first order of business for 

 the circuit designer is to identify and ascer- 

 tain the electrical characteristics of the com- 

 ponents (inboard and outboard of the pres- 

 sure hull) the power source will serve. Table 

 7.8 presents a listing of voltage and amper- 

 age requirements of one set of outboard sub- 

 mersible components and was taken from 

 reference (31). A graphic representation of 

 some components in this list is shown in 

 Figure 7.36 on the STAR III; also taken from 

 the same source. To demonstrate the "untyp- 

 ical" nature of the component array shown 

 in Figure 7.36, the VAST or K-250 series of 

 shallow vehicles (see Chap. 4) has only its 

 propulsion motors outboard. Other vehicles, 

 e.g., the DSRV's, have several times more 

 than the 25 shown in this figure. Nonethe- 

 less, with the information presented in Table 

 7.8, the designer is in a position to develop a 



schematic for both internal and external dis- 

 tribution as shown in Figure 7.37. 



The DOT Handbook (31) offers several con- 

 siderations regarding the general distribu- 

 tion system; in part, these are: 



— Identify and classify thru-hull conduc- 

 tors to expedite location and eliminate 

 cross coupling. 



— Examine load levels (high, low, etc.) to 

 ascertain their potential for electro- 

 magnetic interference. (This topic is 

 dealt with in more detail in the following 

 section.) 



— The metallic parts of the vehicle should 

 not be used to carry electrical power 

 (i.e., as a ground), thus, power sent out 

 on one conductor must return on an- 

 other. In this respect Pallange recom- 

 mends that switching, isolation and pro- 

 tective functions be performed on all 

 wires concerned with the circuit. 



INBOARD 



DISTRIBUTION 



CENTER 



FEEDER 

 BREAKER 



CONTROL 

 POWER HULL 

 HULL PENETRATOR 

 PENETRATOR \ 



/ INBOARD 



HULL 



I OUTBOARD 



FROM OUTBOARD 

 POWER SOURCE 



NBOARD 

 EQUIPMENT 



GROUP 



FEEDER 



BR 



FEEDER 

 BREAKER 



MAIN 

 BREAKER 



TIE 

 BREAKER 



eakerXj? : 



L4...A 



OUTBOARD 



FEEDER 

 BREAKER 



SENSOR 



HULL 



PENETRATOR 



OUTBOARD 



DISTRIBUTION 



CENTER it^ 



TO OUTBOARD 

 SENSOR 

 TO OUTBOARD 

 LOADS 



INBOARD 



DISTRIBUTION 



SYSTEM 



#1 



INTERNAL 



HULL 



HULL 



PENETRATOR 



INBOARD 



EXTERNAL 



GROUP 

 FEEDER 

 >i>^BREAKER 



4 I 



OUTBOARD 

 DISTRIBUTION 

 r— .CENTER #2 



0=^ 



INBOARD 



)ISTRIBUTION 



SYSTEM 



#2 



Fig. 7.37 External and internal schematics of power distribution systems. 



357 



