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Model Development of Large-Scale Spacecraft Fires During the Saffire-IV ExperimentsAn accidental fire can pose dire consequences to crew safety and mission success. The Saffire Project aims to investigate large-scale fire behavior in microgravity in order to aid in the prediction of spacecraft fires. These series of experiments ignite solid materials within the Northrup Grumman Cygnus vehicle after it departs from a resupply mission to the International Space Station. A model of the Cygnus vehicle during the Saffire-IV experiment was developed using the commercial software PyroSim. The cargo arranged during the descent phase was used for the geometry of the model. In the model, cabin air flows into the Saffire payload while heat and combustion species flow out of the Saffire downstream through a standoff to a bed of sensors called the Far Field Diagnostic (FFD). The temperature sensors near the Saffire payload were used to determine the heat release rate at the outlet of Saffire, while the details of the combustion and stoichiometry are used to determine the species flow at the outlet. Gas measurements previously reported for the Saffire-IV experiments are compared against the simulation results and sources of error are discussed.
Document ID
20220002714
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
John Brooker
(Glenn Research Center Cleveland, Ohio, United States)
Justin Niehaus
(Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
February 17, 2022
Subject Category
Space Transportation And Safety
Report/Patent Number
ICES-2022-278
Meeting Information
Meeting: 51st International Conference on Environmental Systems (ICES)
Location: Saint Paul, MN
Country: US
Start Date: July 10, 2022
End Date: July 14, 2022
Sponsors: International Conference on Environmental Systems
Funding Number(s)
WBS: 089407
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Technical Review
Single Expert
Keywords
Modeling
Fire Safety
Spacecraft
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