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Flettner Rotor - Drive Power

Contents

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Electric motor input power to spin a Flettner rotor at the design RPM - 1–3 % of generated thrust energy.

Formula

$$ P = \tfrac{1}{2} \rho_a C_D D H V_t^3 $$

Symbol legend

SymbolMeaningUnitSource
$V_t$Rotor tip speedm/sπDn
$D, H$Rotor diameter / heightmmaker spec

Sources

  • Norsepower / Anemoi datasheets.