Gradient-based optimization with high-fidelity aerodynamic modeling is used to analyze and improve the design of a 100 passenger regional jet. The full configuration of the jet, including wing, body, tail, pylon, and nacelle components, is considered in this optimization. Overset meshing is used to allow component independence in the meshing scheme and in the geometry parametrization. We analyze the tradeoffs between wing shape, altitude, and engine size and consider the impact of adding constraints such as climb rate, takeoff field length, and buffet onset margin. The final optimized design achieves a 2% improvement over the baseline while satisfying these constraints.
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