Transactions Society Naval Architects and Marine Engineers, Vol. 30, 1922. Plate 4° 
To illustrate paper on “Some Experiments on Propeller Position and Propulswe Efficiency,” 
by Rear Admiral D. W. Taylor (C. C.), U. S. N., Honorary Vice-President. 
Fic. 4 
PROPELLER N2& bT1O 
COERFICIENTS|JAN D] EFFICIENCY 
WST RA. Na RDES +5 , 
SPHSED OF ADVANC Kr. 5 
5 Ris c = om RG = 4 a 
DATE OF TEST — SEPTEMBER 1922 
PROPELLER] FOR ake ania THRUST DEGUCTION INVESTIGATIONS 
NAO 
ae Bs 
fen (L\B.-F rr) 
= REV/sSeEc. 
PEEDIOF ADVANCE (§+/sec) 
Eee 
pram EVER 5 , 
Nel 
ZN 
Ch 
SZ BN P 
TORQUE COEFFICIENT (Ca) 
£ 
\ 
LD 
THRUST COEFFICIENT (Cx) AND EFFICIENCY (e) 
Coro 
ey 2 ir, 
268 2e 
See oe 
8 
-20 io @) 
SLIP RATIO 
