Memorias de investigación
Artículos en revistas:
On the use of calculus of variations to the shape of hovering rotors of minimum power and its application to micro air vechicles
Año:2012
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
In this paper, calculus of variations and combined blade element and momentum theory (BEMT) are used to demonstrate that, in hover, when neither root nor tip losses are considered; the rotor, which minimizes the total power (MPR), generates an induced velocity that varies linearly along the blade span. The angle of attack of every blade element is constant and equal to its optimum value. The traditional ideal twist (ITR) and optimum (OR) rotors are revisited in the context of this variational framework. Two more optimum rotors are obtained considering root and tip losses, the ORL, and the MPRL. A comparison between these five rotors is presented and discussed. The MPR and MPRL present a remarkable saving of power for low values of both thrust coefficient and maximum aerodynamic efficiency. The result obtained can be exploited to improve the aerodynamic behaviour of rotary wing micro air vehicles (MAV). A comparison with experimental results obtained from the literature is presented.
Internacional
Si
JCR del ISI
Si
Título de la revista
Proceedings of the Institution of Mechanical Engineers Part G-Journal of Aerospace Engineering
ISSN
0954-4100
Factor de impacto JCR
0,488
Información de impacto
Volumen
226
DOI
10.1177/0954410011411636
Número de revista
Desde la página
574
Hasta la página
588
Mes
ABRIL
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Desarrollo y Ensayos Aeroespaciales
  • Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"
  • Departamento: Vehículos Aeroespaciales