| Blade Torsion
Rank |
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| • | Slight >0 & <=1 mm |
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| • | Mild >1 mm & <=3
mm |
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| • | Moderate >3 mm & <=4 mm |
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| • | Severe >4 mm |
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| Metric
definitions of Blade Torsion Rank devised by |
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| Fisher, J. 2004 |
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