Low-Cost Rotating Experimentation in Compressor Aerodynamics Using Rapid Prototyping

Table 2

Design parameters of the mixed flow compressor stage.

Parameter	= 7200 RPM	= 4382 RPM
Design corrected mass flow (kg/s)	0.511	0.330
Design stagnation pressure rise coefficient	1.801	1.39
Design efficiency	0.917	0.766
Rotor inlet circum. tip speed (m/s)	59.9	36.4
Rotor inlet tip radius (mm)	78.2
Rotor inlet hub-tip ratio	0.600
Rotor outlet tip radius (mm)	109
Rotor outlet hub-tip ratio	0.902
Stator inlet tip radius (mm)	123
Stator inlet hub-tip ratio	0.886
Rotor tip clearance/stator hub clearance (mm)	0.381/0
Number of blades (rotor/stator)	11/17