This paper presents a retrofit design of a subfloor structure for commuter aircrafts. The subfloor concept is developed to improve the crash safety and consists in adding to a conventional aluminum structure crushable elements made of foam-blocks. The finite element simulation of a 9 m/s vertical impact onto a rigid surface shows that the accelerations in correspondence of the seats and the occupants are limited to 22 g, in comparison to the 33 g of the original configuration. So, the maximum acceleration results 33% lower than the maximum one measured on the conventional subfloor. Also the floor buckling and the seat detachment are significantly reduced.

Development of a Crashworthy Subfloor Concept for a Commuter Aircraft

BISAGNI, CHIARA
2003-01-01

Abstract

This paper presents a retrofit design of a subfloor structure for commuter aircrafts. The subfloor concept is developed to improve the crash safety and consists in adding to a conventional aluminum structure crushable elements made of foam-blocks. The finite element simulation of a 9 m/s vertical impact onto a rigid surface shows that the accelerations in correspondence of the seats and the occupants are limited to 22 g, in comparison to the 33 g of the original configuration. So, the maximum acceleration results 33% lower than the maximum one measured on the conventional subfloor. Also the floor buckling and the seat detachment are significantly reduced.
2003
Computational Fluid and Solid Mechanics 2003
9780080440460
crashworthiness; foam-blocks subfloor; finite element analysis; retrofit design; rohacell foam; commuter aircraft; energy absorption
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/253147
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