Figures 1 and 2(a) show the planform shape of the two wings analysed.
This is an interesting result, because, for fully subsonic flight conditions, with all other design parameters fixed, the planform shape of the curved wing leads to an important increase in wing flutter speed.
a fully transonic regime), the curved planform provides increases in flutter speed.
On the contrary, the better dynamic response of the curved planform wing enables lighter aircrafts to be designed with a similar flutter boundary of traditional swept wing configurations.
A campaign of dynamic fluid structure interaction analyses was carried out to investigate the effects of the planform on the stability properties of high aspect ratio wings.
Previous studies have demonstrated that a curved planform wing reduces the drag coefficient.
The results of the present study demonstrate that from a dynamic point of view (i) a curved planform wing shows an excellent performance also in fully subsonic flight conditions and (ii) in the transonic regime, for a curved planform wing, shock phenomena are less critical compared to those occurring on a conventional swept wing.
Weihsradius, "Minimum induced drag of wings with curved planform," Journal of Aircraft, vol.
Holmes, "Experimental investigation on the effect of crescent planform on lift and drag," Journal of Aircraft, vol.
Massai, "Preliminary analysis of a high aspect ratio wing with curved planform," in Proceedings of the Associazione Italiana di Aeronautica e Astronautica (AIDAA '09), pp.