Abstract
An important matter concerning small airplanes is the crashworthiness of the vehicle impacting the ground, thereafter the parachute opening. The current regulations for the emergency landing dynamic conditions CS 23.562 expect that seat design satisfies the requirements in vertical and horizontal test conditions. This work aims to compare two different aircraft configurations: a low-wing metallic and a high-wing composite one. Both the airplanes are two-seaters and single-engine equipped. The target of the analysis is the check of the compliance with human tolerance to injury criteria by the seats and the restraint system, and the determination of the possible strikes of the occupants inside the habitable space as a consequence of the impact loads. Finite element analysis of a partial section of the fuselage for both the configurations has been performed utilizing the commercial solver LS-Dyna. A parametric analysis is performed in order to find out the best impact angle in terms of the lumbar loads and the loads transmitted by the belts as a consequence of the contact between the aircraft and the ground, so to improve the level of safety. The performed investigation could be an important indication for the parachute system design.
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Di Mauro, G., Gagliardi, G.M., Guida, M., Marulo, F. (2023). Impact Dynamics of Different Cabin Solutions of Small Airplanes. In: Lopresto, V., Papa, I., Langella, A. (eds) Dynamic Response and Failure of Composite Materials. DRAF 2022. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-28547-9_43
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DOI: https://doi.org/10.1007/978-3-031-28547-9_43
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