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http://dx.doi.org/10.5762/KAIS.2019.20.5.605

Assessment of Structural Soundness and Joint Load of the Rotorcraft External Fuel Tank by Sloshing Movement  

Kim, Hyun-Gi (Korea Aerospace Research Institute)
Kim, Sung Chan (Korea Aerospace Research Institute)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.20, no.5, 2019 , pp. 605-611 More about this Journal
Abstract
The fuel sloshing due to the rapid manoeuvre of the aircraft causes significant loads on internal components, which may break components or piping. In particular, a significant load is applied to the joint of the external fuel tank by sloshing movement, which may affect the safety of the aircraft when the joint of the external fuel tank is damaged. Therefore, in order to improve the survivability of aircraft and crew members, the design of external fuel tanks, and joints should be performed after evaluating the sloshing load through a numerical analysis of the fuel sloshing conditions. In this paper, a numerical analysis was performed on the sloshing test of the external fuel tank for rotorcraft. ALE (Arbitrary Lagrangian Eulerian) technique was used, and the test conditions specified in the U.S. Military Specification (MIL-DTL-27422D) was applied as the conditions for numerical analysis. As a result of the numerical analysis, the load on the joint of the external fuel tank was calculated. Moreover, the effects of sloshing movement on structural soundness were assessed through analysis of stress levels and margin of safety on metal fittings and composite containers.
Keywords
ALE; External Fuel Tank; LS-DYNA; MIL-DTL-27422; Sloshing;
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Times Cited By KSCI : 1  (Citation Analysis)
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