YS-11型機胴体構造の落下衝撃試験(その2)

概要

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The Structures and Materials Research Center of the National Aerospace Laboratory of Japan (NAL) in conjunction with Kawasaki Heavy Industries, LTD(KHI) conducted a second vertical drop test of a fuselage section cut from a NAMC YS-11 transport airplane in July 2002. The main objective of this test program was to obtain background data for aircraft cabin safety by drop testing a full-scale fuselage section, and to develop a computational tool for aircraft fuselage structure crash simulation.The test article including seats and anthropomorphic test dummies was dropped onto a rigid impact surface using the free-fall method at a velocity of 7.6 m/s (25 ft/s). The impact environment and the resultant response of the fuselage structure and the passenger dummies were considered to be severe but potentially survivable. Finite element models of the test articles for vertical drop tests were developed using a nonlinear dynamic analysis code, LS-DYNA3D. Correlation between test and analysis was fairly good. A description of some of the results of the full-scale fuselage section drop tests and numerical simulations is presented in this paper.