Multi-Fidelity Loads Analyses including Load Alleviation System

Kurzfassung

This lecture introduces a multi-fidelity load analysis framework for the structural sizing of a transport jet with a High Aspect Ratio Wing (HARW). In this approach, a large number of maneuver and gust cases are first evaluated using a low-fidelity method to construct initial load envelopes. From these results, selected critical vertices are identified to conduct high-fidelity, flight-dynamics-coupled aeroelastic simulations to accurately capture critical aerodynamic nonlinearities at high subsonic Mach numbers. Furthermore, the presentation investigates the impact of these aerodynamic nonlinearities under the application of active load control. Specifically, the performance of Maneuver and Gust Load Alleviation (MLA/GLA) systems-designed using the low-fidelity approach - is evaluated and compared across both low- and high-fidelity frameworks. Finally, comprehensive load envelope comparisons are presented to evaluate the impacts of aerodynamic nonlinearities.