Revisiting Froude’s Theory for Hovering Shrouded Rotor | Zendy

Thierry Jardin | Zendy; Gilles Grondin | Zendy; Jérémie Gressier | Zendy; C. Huo | Zendy; Nicolas Doué | Zendy; Roger Barènes | Zendy

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Revisiting Froude’s Theory for Hovering Shrouded Rotor

Author(s) -

Thierry Jardin,

Gilles Grondin,

Jérémie Gressier,

C. Huo,

Nicolas Doué,

Roger Barènes

Publication year - 2015

Publication title -

aiaa journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.828

H-Index - 158

eISSN - 1081-0102

pISSN - 0001-1452

DOI - 10.2514/1.j053507

Subject(s) - froude number , aerodynamics , rotor (electric) , context (archaeology) , aerospace engineering , mechanics , momentum (technical analysis) , component (thermodynamics) , engineering , physics , mechanical engineering , geology , flow (mathematics) , economics , paleontology , finance , thermodynamics

This paper extends Froude’s momentum theory for free propellers to the analysis of shrouded rotors. A one-dimensional analytical approach is provided, and a homokinetic normal inlet surface model is proposed. Formulations of thrusts and power for each system component are derived, leading to the definition of optimum design criteria and providing insight into the global aerodynamics of shrouded rotors. In the context of micro-air vehicles applications, assessment of the model is conducted with respect to numerical data. Overall, comparison between numerical and analytical results shows good agreement and highlights the sensitivity of the model to viscous effects

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