An aeroelastic wind tunnel experiment to identify the influence of the wing stiffness and hinge release threshold on the gust load alleviation performance of a folding wingtip design is presented in this study. Five models with different stiffness and tailoring properties are tested and the wing root bending moment at different conditions is compared to the response with locked hinge conditions to assess the impact on the gust load alleviation capabilities of the folding wingtip. The results show that the structural properties do not have an important impact on the peak load alleviation but the hinge release threshold and timing do. Releasing with the correct timing can reduce significantly the peak loads. However, the dynamics of the system are affected by this release: the flutter speed is decreased and, although the performance can improve, load oscillations increase, which can be considered detrimental for reasons such as fatigue.
|Title of host publication||AIAA SCITECH 2022 Forum|
|Number of pages||29|
|Publication status||Published - 2022|
|Event||AIAA SCITECH 2022 Forum - virtual event|
Duration: 3 Jan 2022 → 7 Jan 2022
|Conference||AIAA SCITECH 2022 Forum|
|Period||3/01/22 → 7/01/22|