Experimental Analysis And Numerical
Simulation Of A Fuel Tank Filler In A Crash
Environment
Author(s)
G. Janszen & A. Pernechele
Abstract
The work presented is part of a research on passive solutions that can limit fire
risks in the case of aircraft crash events. Particularly, the development of metallic
fillers, such as Explosafe®, has recently awakened much interest because of the
small weight and volume that they occupy in the fuel tank. In the previous phase
of the work, impact tests on a helicopter fuel tank filled with water and the above
mentioned filler have been carried out. A reduction of the fluid pressure and the
overall stresses in the fuel tank have been observed. However, at that stage it was
not possible to realize a well-correlated numerical model because the code used
did not take into account inertial loads which are prevalent in impact scenarios.
The commercial Abaqus software has been used in a consolidation analysis of
porous media (*soils). A new model has been set up and an acceleration
temporal history, obtained by experimental tests, has been imposed on all the
elements, forcing the program to take into account the inertial loads as well.
Results are encouraging and a good correlation has been achieved: the highest
pressure value is reached. Some errors due to high Explosafe® permeability and
to validity limits of the porous media theory do persist. The stress distribution,
transmitted by the fluid to the fuel tank, are coherent with the experimental data.
Keywords: helicopter fuel tank, metallic filler, fire suppression, crash tests, finite
elements.
1 Introduction
Where safety is concerned, the role played by the fuel system, and particularly
by the fuel tanks, is very important. Many improvements have lately been made
and one of the most important is due to the development of tank fillers that can
Keywords
helicopter fuel tank, metallic filler, fire suppression, crash tests, finite
elements.
Related Book
Other papers in this volume
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