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International projects source: SICRIS

Exploration fire safety

Keywords
Spacecraft, fire safety, flammability, materials
Researchers (2)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  55980  PhD Grunde Jomaas  Civil engineering  Researcher  2022 - 2024  124 
2.  56354  PhD Wilson Ulises Rojas Alva  Civil engineering  Head  2022 - 2024  22 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  1502  Slovenian National Building and Civil Engineering Institute  Ljubljana  5866324000  10,257 
Abstract
The present assumptions of safety based on normal gravity tests and protocols and extrapolated to microgravity or partial gravity on the basis of modelling tools have been demonstrated to carry significant uncertainty. Furthermore, all existing modelling tools that enable extrapolation of empirical results to real microgravity or partial gravity performance have been challenged by the emergence of phenomena normally ignored because they are masked by buoyancy. The work conducted on smaller samples and for shorter experimental durations has shown that fire behaviour in low-gravity is very different from that in normal-gravity, with differences observed for flammability limits, spread behaviour, flame colour and flame structure. Therefore, the goal of EXFires is on material flammability and fire tests in microgravity at an appropriate scale to understand the microgravity fire science sufficiently for adequate safety design and model development. The principal impact of the EXFires project will be the production of a complete and unique set of data that enables the development of forecasting tools for a holistic fire safety design for future space missions. As the focus is on longer, human flights, input data for model development will be generated through studies of the flammability of materials in enhanced oxygen environments in microgravity and partial gravity. This will be facilitated through a series of ground-based microgravity, partial gravity and normal-gravity experiments that will maximise the return of scheduled ESA/NASA flight experiments, and experiments conducted in the facilities of European National Space agencies (CNES & ZARM).
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