Developing Vertical Take-off and Landing (VTOL) vehicles for the Urban Air Mobility (UAM) markets presents a need for lightweight vehicle structures with effective occupant and internal equipment protection capabilities. Force attenuation is one of the important properties in this type of application particularly for cabin interiors or seats. Polyurethane (PU) pads and warp-knitted spacer fabrics (WKSF) are promising lightweight materials for high-energy damping applications. In this study, we investigated the impact attenuation properties of polyurethane pads and WKSF for potential applications in some parts of the VTOL, UAM, or also automotive industry that damping force can be critical. Constant mass was established for the multilayer composite design configurations, and they were subjected to a drop hammer-based test system. The results of this study show that the combination of polyurethane pad and WKSF can reduce the reaction force by up to 35% compared to using them in complete WKSF or PU form.
Force Attenuation Properties of Multilayer Polyurethane and 3D Fabric Composites
Sustainable aviat.
International Symposium on Electric Aircraft and Autonomous Systems ; 2022 ; Maribor, Slovenia July 19, 2022 - July 21, 2022
2023-08-24
4 pages
Article/Chapter (Book)
Electronic Resource
English
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