Links between Main Frequencies of Established Rotating Stall and Rotational Frequencies and/or Blade Passing Frequencies

Table 1

Characteristics of different types of blades.

1	2	3	4	5	6	7	8	9
Design para-meters	Rotor; 7143	Stator; 7143	Rotor; 7144	Stator; 7144	Rotor; 7157	Stator; 7157	Rotor; 7160	Stator; 7160
𝜓	0.45		0.45		0.45		0.60
𝜑	0.60		0.60		0.35		0.45
𝜈	0.70		0.70		0.70		0.55
𝑍	20	23	20	23	20	23	16	19
Chord length L (mm)	50	60	50	60	60	60	60	60
Height h (mm)	60	60	60	60	60	60	90	90
t (mm)	53.40	46.44	53.40	46.44	53.40	46.44	60.84	51.23