McClure and Hove 



where 



0.1 0.2 0.3 0.4 0.9 0.6 0.7 0.8 0.9 



Fig. 9 - Torque coefficient 

 vs advance coefficient J 



Kt = (0.725 P/d- 0.20+ 0.45 J^) cos ^ - J^ 



Kg = (0.725 P/d- 0.20+ 0.45 Jg) sin 6 



Kq= 10-^ [45(P/d)2 ,i_e''-''Ja + j^3e(i-25-2.22e) 



K.J. = thrust coefficient in the direction of inflow 



Kg = side force coefficient at right angles to the direction of inflow 



Kq = torque coefficient 



e = angle between the propeller shaft and the direction of inflow 



P/d = pitch ratio 



J. = advance coefficient. 



424 



