What is it about?
Optimal regional-class hybrid wing-body aircraft that satisfy stability and control constraints were investigated. Low-speed trim and static stability and rotation for liftoff were considered. Methods of circumventing these punitive constraints, such as telescoping nose landing gear and a high amount of geometric freedom, were studied. A relatively high lift-to-drag ratio of 22.8 was thus obtained. This is higher than that of the baseline optimal aircraft, which was obtained without imposing the low-speed trim and static margin constraints.
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Why is it important?
High-fidelity aerodynamic shape optimization is performed. It is supplemented with conceptual-level models for other disciplines. Model fidelity is thus balanced with computational cost in a manner acceptable for conceptual design work. Many constraints of practical interest could thus be considered and circumvented through realistic means.
Perspectives
Optimal multifunctional aerodynamic surfaces can now be designed with knowledge of an objective and practical constraints. This seems key in the successful design of such a nonlinear aircraft, and has only recently become tractable. Hopefully this design method can prove useful if ever hybrid wing-body aircraft become mainstream.
Aiden Gray
University of Toronto
Read the Original
This page is a summary of: Further Exploration of Regional-Class Hybrid Wing-Body Aircraft Through Multifidelity Optimization, January 2021, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2021-0014.
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