Constructal approach to design of wing cross-section for better flow of stresses
Conference
Izadpanahi, E, Moshtaghzadeh, M, Radnezhad, HR et al. (2020). Constructal approach to design of wing cross-section for better flow of stresses
. 1 PartF 10.2514/6.2020-0275
Izadpanahi, E, Moshtaghzadeh, M, Radnezhad, HR et al. (2020). Constructal approach to design of wing cross-section for better flow of stresses
. 1 PartF 10.2514/6.2020-0275
Flutter behavior of flying wing aircraft varies with design manipulation. Here, we discover and explain as to why a certain cross-sectional or wing design have effect on the aeroelastic flight of the aircraft. The approach considered the constructal law and the principle that by preventing stress strangulations in a design, it helps to have a better access for the flows in the system. This paper uses computer programs Gmsh, VABS (Variational Asymptotic Beam Sectional Analysis), and NATASHA (Nonlinear Aeroelastic Trim And Stability of HALE Aircraft) to conduct stress and stability analyses. NATASHA has been developed from geometrically exact, fully intrinsic, composite beam formulation of Hodges and Peters aerodynamic model. To recover stresses, we use used results of the trim solution as inputs in VABS. The stability and stress results are provided to achieve a better understanding of how changing the rib configurations would affect the stability and the flow of stresses. The findings reveal the analogy between the flow of stresses and the flutter boundary for four different ribs configurations. It is shown that the case with the highest flutter speed is associated with the smoothest flow of stresses.
