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**Harvard**

Xisto, C., Leger, J., Páscoa, J., Gagnon, L., Masarati, P., Angeli, D. och Dumas, A. (2016) *Parametric Analysis of a Large-scale Cycloidal Rotor in Hovering Conditions*.

** BibTeX **

@article{

Xisto2016,

author={Xisto, Carlos and Leger, J. and Páscoa, J. and Gagnon, L. and Masarati, P. and Angeli, D. and Dumas, A.},

title={Parametric Analysis of a Large-scale Cycloidal Rotor in Hovering Conditions},

journal={Journal of Aerospace Engineering},

issn={0893-1321},

abstract={In this work, four key design parameters of cycloidal rotors, namely the airfoil section; the number of blades; the chord-to-radius ratio; and the pitching axis location, are addressed. The four parameters, which have a strong effect on the rotor aerodynamic efficiency are analyzed with an analytical model and a numerical approach. The numerical method is based on a finite-volume discretization of two-dimensional Unsteady Reynolds Averaged Navier-Stokes equations on a multiple sliding mesh, are proposed and validated against experimental data. A parametric analysis is then carried out considering a large-scale cyclogyro, suitable for payloads above 100 kg, in hovering conditions. Results demonstrate that the airfoil thickness significantly affects the rotor performance; such a result is partly in contrast with previous findings for small- and micro-scale configurations. Moreover, it will be shown that increasing the number of blades could result in a decrease of the rotor efficiency. The effect of chord-to-radius will demonstrate that values of around 0.5 result in higher efficiency. Finally it is found out that for these large systems, in contrast with micro-scale cyclogyros, the generated thrust increases as the pitching axis is located away from the leading edge, up to 35% of chord length. Further the shortcomings of using simplified analytical tools in the prediction of thrust and power in non-ideal flow conditions will be highlighted and discussed.},

year={2016},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 235793

A1 Xisto, Carlos

A1 Leger, J.

A1 Páscoa, J.

A1 Gagnon, L.

A1 Masarati, P.

A1 Angeli, D.

A1 Dumas, A.

T1 Parametric Analysis of a Large-scale Cycloidal Rotor in Hovering Conditions

YR 2016

JF Journal of Aerospace Engineering

SN 0893-1321

AB In this work, four key design parameters of cycloidal rotors, namely the airfoil section; the number of blades; the chord-to-radius ratio; and the pitching axis location, are addressed. The four parameters, which have a strong effect on the rotor aerodynamic efficiency are analyzed with an analytical model and a numerical approach. The numerical method is based on a finite-volume discretization of two-dimensional Unsteady Reynolds Averaged Navier-Stokes equations on a multiple sliding mesh, are proposed and validated against experimental data. A parametric analysis is then carried out considering a large-scale cyclogyro, suitable for payloads above 100 kg, in hovering conditions. Results demonstrate that the airfoil thickness significantly affects the rotor performance; such a result is partly in contrast with previous findings for small- and micro-scale configurations. Moreover, it will be shown that increasing the number of blades could result in a decrease of the rotor efficiency. The effect of chord-to-radius will demonstrate that values of around 0.5 result in higher efficiency. Finally it is found out that for these large systems, in contrast with micro-scale cyclogyros, the generated thrust increases as the pitching axis is located away from the leading edge, up to 35% of chord length. Further the shortcomings of using simplified analytical tools in the prediction of thrust and power in non-ideal flow conditions will be highlighted and discussed.

LA eng

DO 10.1061/(ASCE)AS.1943-5525.0000658

LK http://dx.doi.org/10.1061/(ASCE)AS.1943-5525.0000658

LK http://publications.lib.chalmers.se/records/fulltext/235793/local_235793.pdf

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