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WindPact 1.5 MW Turbine Blade<br />

Comparison of Mode Shapes<br />

Modal displacement<br />

2<br />

1<br />

0<br />

-1<br />

-2<br />

National Renewable Energy Laboratory<br />

Mode 3<br />

(Ω = 5 rad/s)<br />

BModes<br />

RCAS<br />

0 10 20 30 40<br />

Span location (m)<br />

torsion<br />

lag<br />

flap<br />

18<br />

Innovation for Our Energy Future

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