Fire Safety Implications of Preliminary Results from Saffire IV and V Experiments on Large Scale Spacecraft Fires

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dc.creatorUrban, David
dc.creatorRuff, Gary
dc.creatorFerkul, Paul
dc.creatorEaston, John
dc.creatorOwens, Jay
dc.creatorOlson, Sandra
dc.creatorMeyer, Marit
dc.creatorFortenberry, Claire
dc.creatorBrooker, John
dc.creatorGraf, John
dc.creatorCasteel, Michael
dc.creatorJomaas, Grunde
dc.creatorToth, Balazs
dc.creatorEigenbrod, Christian
dc.creatorT'Ien, James
dc.creatorLiao, Ya-Ting
dc.creatorFernandez-Pello, Carlos
dc.creatorMeyer, Florian
dc.creatorLegros, Guillaume
dc.creatorGuibaud, Augustin
dc.creatorSmirnov, Nikolay
dc.creatorFujita, Osamu
dc.date.accessioned2021-06-24T19:16:05Z
dc.date.available2021-06-24T19:16:05Z
dc.date.issued7/12/2021
dc.descriptionDavid Urban, NASA
dc.descriptionGary Ruff, NASA
dc.descriptionPaul Ferkul, USRA
dc.descriptionJohn Easton, USRA
dc.descriptionJay Owens, USRA
dc.descriptionSandra Olson, NASA
dc.descriptionMarit Meyer, NASA
dc.descriptionClaire Fortenberry, Universities Space Research Association
dc.descriptionJohn Brooker, NASA
dc.descriptionJohn Graf, NASA
dc.descriptionMichael Casteel, Jacobs
dc.descriptionGrunde Jomaas, The University of Edinburgh
dc.descriptionBalazs Toth, ESA
dc.descriptionChristian Eigenbrod, University of Bremen, ZARM
dc.descriptionJames T'Ien, CWRU
dc.descriptionYa-Ting Liao, Case Western Reserve University
dc.descriptionCarlos Fernandez-Pello, University of California, Berkeley
dc.descriptionFlorian Meyer, ZARM
dc.descriptionGuillaume Legros, CNRS-Orleans
dc.descriptionAugustin Guibaud, University College London
dc.descriptionNikolay Smirnov, Moscow Lomonosov State University
dc.descriptionOsamu Fujita, Hokkaido University
dc.descriptionICES509: Fire Safety in Spacecraft and Enclosed Habitatsen
dc.descriptionThe 50th International Conference on Environmental Systems was held virtually on 12 July 2021 through 14 July 2021.en_US
dc.description.abstractThe spread and growth of flames over large solid fuel samples and their effect on the pressurized spacecraft were studied inside Cygnus spacecraft while in orbit after departing the International Space Station. These experiments were developed by NASA�s Advanced Exploration Systems Division in the Human Exploration and Operations Mission Directorate. The ignited materials consisted of poly-methyl methacrylate (PMMA), cotton fabric and a cotton/fiberglass fabric blend. The samples were all 40 cm wide and with various lengths ranging from 18 cm for the PMMA samples to 50 cm for the fabrics. The overall results from these tests and their impact on the spacecraft are presented with emphasis on the fire safety implications of the results. The experiments included, a post-fire cleanup system, vehicle internal volume measurements, and transport of acid gases (HCl and HF). Measurements included video images, flame spread rate, flame temperatures and radiant heat output; energy release through oxygen calorimetry; distributed measurements of CO2 concentration and temperature at six locations in the spacecraft; CO2, CO, O2, HF and HCl concentrations; vehicle pressurized volume; and aerosol concentrations. Details of the flame growth and spread are discussed in other papers as are details of the post-fire cleanup system performance. The fire events had a measurable impact on the vehicle pressure, temperature, and carbon dioxide concentration. However, despite having heat release rates up to 10 kW, the average vehicle conditions did not rise to unacceptable levels. The combined results of the experiments provide significant new understanding of the impact of sample and flow duct height on flame spread and growth in addition to an improved perspective of the impact of a fire event on a spacecraft.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.otherICES-2021-266
dc.identifier.urihttps://hdl.handle.net/2346/87224
dc.language.isoengen_US
dc.publisher50th International Conference on Environmental Systemsen_US
dc.subjectfire
dc.subjectmicrogravity
dc.subjectcygnus
dc.titleFire Safety Implications of Preliminary Results from Saffire IV and V Experiments on Large Scale Spacecraft Firesen_US
dc.typePresentationen_US

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