312 P. Mandel 
0.3 
MILITARY 
SUBMARINES 
0 
Lyx= 
e 
’ 
NI. NOSE 
L 
0 
TAIL; Ly 
HEMI- 
0 
BODY OF REVOL.| HEMISPHERICAL 
BODY OF REVOL. CONICAL 
BODY OF REVOL.| SUBMARINE LIKE 
BODY OF REVOL. HEMIS. BOW, 
CONIC. STERN 
ACTUAL MILITARY SUBMARINES 
CONICAL NOSE @ TAIL 
= 
Bs i an i SS OO 
~~. \ 
Tae 
See 
“N 7p =I 
— 
. 
L 
7p = 1.0 
| 
I 
| 
I. ‘V. 
| 
| 
| 
\ 
\) 
” 
(o) 
\ 
A 
® ALUMINAUT 
\ 
VARIABLE 
VARIABLE 
VARIABLE 
VARIABLE 
VARIABLE 
Fo 
Fo is i _— 
aa D 
nS 16 
eh, =5 
Ee % 
— 
100 % 
ery 
x= 
FLAT NOSE @& TAIL; L 
SPHERE (MINIMUM POSSIBLE WETTED SURFACE) 
0.4 0.5 0.6 0.7 
PRISMATIC COEFFICIENT, Cp- 
Fig. 3. Wetted surface of bodies of revolution as a function of length/diameter ratio, prismatic 
coefficient, and end shape 
0.8 
0,9 
9.5 
9.0 
8.5 
8.0 
7.5 
7.0 
6.5 
6.0 
5.5 
5.0 
4.5 
WETTED SURFACE OF SOLIDS OF UNIT VOLUME 
