Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft

The fulfilment of the crash is a demanding requirement for a Tiltrotor. Indeed, such a kind of aircraft, being a hybrid between an airplane and a helicopter, inherits the requirements mainly from helicopters (EASA CS 29) due to its hovering ability. In particular, the fuel storage system must be des...

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Autores principales:	Carmen Simona Paciello, Claudio Pezzella, Marika Belardo, Simone Magistro, Francesco Di Caprio, Vincenzo Musella, Giuseppe Lamanna, Luigi Di Palma
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	crashworthiness tiltrotor fuel bladders SPH explicit simulation Technology T Science Q
Acceso en línea:	https://doaj.org/article/8de0ca671a16452eaeb813763f20c105
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id	oai:doaj.org-article:8de0ca671a16452eaeb813763f20c105
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spelling	oai:doaj.org-article:8de0ca671a16452eaeb813763f20c1052021-11-25T18:03:08ZCrashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft10.3390/jcs51102852504-477Xhttps://doaj.org/article/8de0ca671a16452eaeb813763f20c1052021-10-01T00:00:00Zhttps://www.mdpi.com/2504-477X/5/11/285https://doaj.org/toc/2504-477XThe fulfilment of the crash is a demanding requirement for a Tiltrotor. Indeed, such a kind of aircraft, being a hybrid between an airplane and a helicopter, inherits the requirements mainly from helicopters (EASA CS 29) due to its hovering ability. In particular, the fuel storage system must be designed in such a manner that it is crash resistant, under prescribed airworthiness requirements, in order to avoid the fuel leakage during such an event, preventing fire and, thus, increasing the survival chances of the crew and the passengers. The present work deals with the evaluation of crashworthiness of the fuel storage system of a Tiltrotor (bladder tank), and, in particular, it aims at describing the adopted numerical approach and some specific results. Crash resistance requirements are considered from the earliest design stages, and for this reason they are mainly addressed from a numerical point of view and by simulations that treat both single components and small/medium size assemblies. The developed numerical models include all the main parts needed for simulating the structural behavior of the investigated wing section: the tank, the structural components of the wing, the fuel sub-systems (fuel lines, probes, etc.) and the fuel itself. During the crash event there are several parts inside the tanks that can come into contact with the tank structure; therefore, it is necessary to evaluate which of these parts can be a damage source for the tank itself and could generate fuel loss. The SPH approach has been adopted to discretise fuel and to estimate the interaction forces with respect to the tank structure. Experimental data were used to calibrate the fuel tank and foam material models and to define the acceleration time-history to be applied. Thanks to the optimized foam’s configuration, the amount of dissipated impact energy is remarkable, and the evaluation of tanks/fuel system stress distribution allows estimating any undesired failure due to a survivable crash event.Carmen Simona PacielloClaudio PezzellaMarika BelardoSimone MagistroFrancesco Di CaprioVincenzo MusellaGiuseppe LamannaLuigi Di PalmaMDPI AGarticlecrashworthinesstiltrotorfuel bladdersSPHexplicit simulationTechnologyTScienceQENJournal of Composites Science, Vol 5, Iss 285, p 285 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	crashworthiness tiltrotor fuel bladders SPH explicit simulation Technology T Science Q
spellingShingle	crashworthiness tiltrotor fuel bladders SPH explicit simulation Technology T Science Q Carmen Simona Paciello Claudio Pezzella Marika Belardo Simone Magistro Francesco Di Caprio Vincenzo Musella Giuseppe Lamanna Luigi Di Palma Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
description	The fulfilment of the crash is a demanding requirement for a Tiltrotor. Indeed, such a kind of aircraft, being a hybrid between an airplane and a helicopter, inherits the requirements mainly from helicopters (EASA CS 29) due to its hovering ability. In particular, the fuel storage system must be designed in such a manner that it is crash resistant, under prescribed airworthiness requirements, in order to avoid the fuel leakage during such an event, preventing fire and, thus, increasing the survival chances of the crew and the passengers. The present work deals with the evaluation of crashworthiness of the fuel storage system of a Tiltrotor (bladder tank), and, in particular, it aims at describing the adopted numerical approach and some specific results. Crash resistance requirements are considered from the earliest design stages, and for this reason they are mainly addressed from a numerical point of view and by simulations that treat both single components and small/medium size assemblies. The developed numerical models include all the main parts needed for simulating the structural behavior of the investigated wing section: the tank, the structural components of the wing, the fuel sub-systems (fuel lines, probes, etc.) and the fuel itself. During the crash event there are several parts inside the tanks that can come into contact with the tank structure; therefore, it is necessary to evaluate which of these parts can be a damage source for the tank itself and could generate fuel loss. The SPH approach has been adopted to discretise fuel and to estimate the interaction forces with respect to the tank structure. Experimental data were used to calibrate the fuel tank and foam material models and to define the acceleration time-history to be applied. Thanks to the optimized foam’s configuration, the amount of dissipated impact energy is remarkable, and the evaluation of tanks/fuel system stress distribution allows estimating any undesired failure due to a survivable crash event.
format	article
author	Carmen Simona Paciello Claudio Pezzella Marika Belardo Simone Magistro Francesco Di Caprio Vincenzo Musella Giuseppe Lamanna Luigi Di Palma
author_facet	Carmen Simona Paciello Claudio Pezzella Marika Belardo Simone Magistro Francesco Di Caprio Vincenzo Musella Giuseppe Lamanna Luigi Di Palma
author_sort	Carmen Simona Paciello
title	Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
title_short	Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
title_full	Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
title_fullStr	Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
title_full_unstemmed	Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
title_sort	crashworthiness of a composite bladder fuel tank for a tilt rotor aircraft
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8de0ca671a16452eaeb813763f20c105
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Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft

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