1 



1 



1 



z p11 









• kc = 



0.04C 



;>- 



— 



BU W G 









w 





kc = 



= 0.5 









- 



1 



I 



I 





I 



- 



30 



I I I I 



z p12 



20 



- 



10 

 



10 



- 



••l1'51""'* r ^kc = 0.046 





■tr JZ^" 5 ^ 



-20 



~V^9 — SC^/ 113 D " 



30 



_ STEADY VALUE _ 

 1 1 1 1 



10 20 30 40 

 FREQUENCY Hz 



10 20 30 40 

 FREQUENCY Hz 



Figure 41 - Transfer Function for an Axial Inducer Pump at a Flow Co- 

 efficient of 0.07 (Inlet Value) (The value of the total pressure 

 coefficient is about 0.50. The inducer consists of four 

 cambered blades having a tip inlet angle of 7 degrees 

 followed by 12 more heavily loaded tandem blades. 

 The real part of the coefficients are shown 

 solid and the imaginary dotted. Two 

 sets of data are shown, fully 

 wetted and for a cavitation 

 index a = 0.046. ) 



87 



