Aerodynamic Damping
Aerodynamic Damping
Aerodynamic Damping
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Constant speed turbines<br />
Kühn<br />
• Closed-form<br />
• Free vibration<br />
• Numerical linearization<br />
ξ<br />
aero<br />
Nb<br />
ρ Ω<br />
= ⋅ ∫<br />
4 M ω<br />
0<br />
n<br />
R<br />
R<br />
root<br />
C<br />
L L<br />
α<br />
( )<br />
c r rdr<br />
• Simplified closed-form<br />
ξ<br />
aero<br />
=Ω⋅<br />
N ρ C m<br />
b L 1b<br />
4 M<br />
0<br />
α<br />
ω<br />
n
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