Crashworthiness of a Composite Bladder Fuel Tank for a Tilt Rotor Aircraft
| Autor: | Luigi Di Palma, Carmen Simona Paciello, Claudio Pezzella, Marika Belardo, Simone Magistro, Giuseppe Lamanna, Vincenzo Musella, Francesco Di Caprio |
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| Přispěvatelé: | Paciello, C. S., Pezzella, C., Belardo, M., Magistro, S., Di Caprio, F., Musella, V., Lamanna, G., Di Palma, L. |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Bladder Tank business.product_category fuel bladders Crashworthine Computer science Science SPH Crash 02 engineering and technology Automotive engineering Airplane law.invention 0203 mechanical engineering law Engineering (miscellaneous) Fuel bladder 020301 aerospace & aeronautics Airworthiness Rotor (electric) explicit simulation tiltrotor Fuel injection crashworthiness 020303 mechanical engineering & transports Ceramics and Composites Crashworthiness Fuel tank business |
| Zdroj: | Journal of Composites Science Volume 5 Issue 11 Journal of Composites Science, Vol 5, Iss 285, p 285 (2021) |
| ISSN: | 2504-477X |
| DOI: | 10.3390/jcs5110285 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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