Aerodynamic-Structural Optimization of Positive/Negative Stagger Joined Wing Configurations
Dual wing configurations attached at the tip are analyzed aerodynamically and structurally. Both a positive stagger, i.e., the Swept Forward-Swept Rearward (SFSR) configuration, and a negative stagger, i.e., the Wolkovitch Joined Wing (JW) configuration, were analyzed with a common fuselage, engine, payload, etc. The aerodynamic analysis consisted of a multi-element vortex panel program coupled with a momentum integral analysis for the viscous drag and a vortex lattice analysis for the induced drag and spanwise lift distribution. The structural analysis utilized a specially developed sequence of programs which interact iteratively with NASTRAN to economically produce a fully stressed structure. Both configurations are analyzed with the goal of designing an optimum configuration subject to design constraints.
B. P. Selberg and D. Cronin, "Aerodynamic-Structural Optimization of Positive/Negative Stagger Joined Wing Configurations," Proceedings of the Aircraft Systems, Design and Technology Meeting, American Institute of Aeronautics and Astronautics (AIAA), Jan 1986.
The definitive version is available at http://dx.doi.org/10.2514/6.1986-2626
Aircraft Systems, Design and Technology Meeting
Mechanical and Aerospace Engineering
Article - Conference proceedings
© 1986 American Institute of Aeronautics and Astronautics (AIAA), All rights reserved.