Cartesian Mesh Simulations for the Third AIAA Sonic Boom Prediction Workshop
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Engineering topics
Wade M Spurlock
Publications and source records attributed to Wade M Spurlock.
High-Fidelity Blast Modeling of Impact from Hypothetical Asteroid 2021 PDC
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Adjoint-Based Minimization of X-59 Sonic Boom Noise Via Control Surfaces
A multidisciplinary design optimization methodology to directly minimize the ground-level noise generated by a supersonic aircraft's sonic boom is presented. A gradient-based optimizer is coupled with a Cartesian Euler flow solver and an atmospheric propagation tool to forge a unique design capability. Adjoint formulations for both the flow solver and propagation tool are also coupled to provide sensitivities in an efficient manner. The design method is demonstrated on the X-59 Low-Boom Flight Demonstrator by optimizing control surface deflections to improve ground-level noise while maintaining trimmed cruise flight. Two noise minimization examples and a noise maximization are presented. All optimized designs result in measurable improvement in the ground-level noise objective. Extensive surveys of the design space confirm that the optimization method is effective in finding a local optimum. Moreover, repeated application of the method with varying initial design points also demonstrates the robustness of the method.
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