Experimental Determination of Unsteady Propeller Forces 



0.5 



0.4 



-Q—e- 



G-& 



o o o o o ^ 



TORQUE 



r^ 0.2 



40 



60 80 100 



Frequency 



200 



Fig. 9 - Dynamic calibration of torque 



o.s 



^— f ooo | o e | oo | Q — & 



VERTICAL BENDING MOMENT 



0.2 



-e — e— <)■ 



VERTICAL SIDE FORCE 



o o o I o ol o o - 



10 



40 60 80 100 



Frequency 



Fig. 10 - Dynamic calibration of vertical side force and bending moment 



263 



