The recent improvements in electric motor technology and battery energy density are making electric propulsion a valid alternative for non-conventional aircraft design. The adoption of this new propulsive system is changing the design of new aircrafts and distributed propulsion seems to be a good way to exploit the advantages of electric propulsion. In order to minimize the power required, an efficient aerodynamics coupled with high efficiency propeller capable of working at low Reynolds numbers has to be developed. Reduced order models are useful in the preliminary design phase to define the best thrust distribution because they allow the analysis of different configurations in an acceptable time. The model presented is a modified lifting line that takes into account the flow acceleration due to the propeller disk and the swirl component due to the propeller rotation. The reduced model was validated with available wind tunnel results and applied for the analysis of the lift distribution of the Heliplat solar energy aircraft. Differences between the presented model and a panel code CFD analysis are also illustrated.

A REDUCED ORDER MODEL TO ESTIMATING PROPELLER/WING INTERACTION IN SOLAR POWERED AIRCRAFT PRELIMINARY DESIGN / Bacchini, Alessandro; Cestino, Enrico; Romeo, Giulio. - ELETTRONICO. - (2017), pp. 1-10. ((Intervento presentato al convegno 7th EASN International Conference tenutosi a Warsaw, Poland nel 26-29 September 2017.

A REDUCED ORDER MODEL TO ESTIMATING PROPELLER/WING INTERACTION IN SOLAR POWERED AIRCRAFT PRELIMINARY DESIGN

BACCHINI, ALESSANDRO;CESTINO, ENRICO;ROMEO, Giulio
2017

Abstract

The recent improvements in electric motor technology and battery energy density are making electric propulsion a valid alternative for non-conventional aircraft design. The adoption of this new propulsive system is changing the design of new aircrafts and distributed propulsion seems to be a good way to exploit the advantages of electric propulsion. In order to minimize the power required, an efficient aerodynamics coupled with high efficiency propeller capable of working at low Reynolds numbers has to be developed. Reduced order models are useful in the preliminary design phase to define the best thrust distribution because they allow the analysis of different configurations in an acceptable time. The model presented is a modified lifting line that takes into account the flow acceleration due to the propeller disk and the swirl component due to the propeller rotation. The reduced model was validated with available wind tunnel results and applied for the analysis of the lift distribution of the Heliplat solar energy aircraft. Differences between the presented model and a panel code CFD analysis are also illustrated.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2687318
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo