Semi-Analytical and Empirical Approaches to Aircraft Configuration Effects on Post-Stall Aerodynamics - Invited

DES of a Slingsby Firefly Aircraft: Unsteady Flow Feature Extraction Using POD and HODMD

“…Aircraft design is an evolving area and with the availability of advanced numerical techniques such as finite element methods and computational fluid dynamics (CFD), it is now possible to do an initial detailed design virtually (Raymer 1999;Okonkwo and Smith 2016;Rizzi et al 2010). A challenging area of any design is the prediction of aerodynamic coefficients during and beyond aircraft stall (Ciliberti et al 2017;Lutz et al 2015;Grote and Radespiel 2006;Teng et al 2015;Lutz et al 2016;Teng et al 2016). More specifically, the pitching moment and lift and drag coefficients have complex characteristics (Phillips 2010), which at high angles of attack may change significantly post-stall, in some cases leading to an autorotation and the development of a spin (Rao and Go 2019;Bennett and Lawson 2018).…”