10.6084/m9.figshare.1327721.v4
George W. Mulholland
George
W. Mulholland
Marit Meyer
Marit
Meyer
David L. Urban
David
L. Urban
Gary A. Ruff
Gary
A. Ruff
Zeng-guang Yuan
Zeng-guang
Yuan
Victoria Bryg
Victoria
Bryg
Thomas Cleary
Thomas
Cleary
Jiann Yang
Jiann
Yang
Pyrolysis Smoke Generated Under Low-Gravity Conditions
Taylor & Francis Group
2015
heating temperature
iss
International Space Station
flow case
pyrolysis rate
presented.Copyright 2015 American Association
agglomerate shape
smoke aerosol
smoke plume structure
smoke plume
Microgravity Science Glovebox
particle size
smoke experiments
electron microcopy
space vehicles
Pyrolysis Smoke Generated
particle structure
2015-05-29 16:16:03
Journal contribution
https://tandf.figshare.com/articles/journal_contribution/Pyrolysis_Smoke_Generated_Under_Low_Gravity_Conditions/1327721
<div><p>A series of smoke experiments were carried out in the Microgravity Science Glovebox on the International Space Station (ISS) Facility to assess the impact of low-gravity conditions on the properties of the smoke aerosol. The smokes were generated by heating five different materials commonly used in space vehicles. This study focuses on the effects of flow and heating temperature for low-gravity conditions on the pyrolysis rate, the smoke plume structure, the smoke yield, the average particle size, and particle structure. Low-gravity conditions allowed a unique opportunity to study the smoke plume for zero external flow without the complication of buoyancy. The diameter of average mass increased on average by a factor of 1.9 and the morphology of the smoke changed from agglomerate with flow to spherical at no flow for one material. The no flow case is an important scenario in spacecraft where smoke could be generated by the overheating of electronic components in confined spaces. From electron microcopy of samples returned to earth, it was found that the smoke can form an agglomerate shape as well as a spherical shape, which had previously been the assumed shape. A possible explanation for the shape of the smoke generated by each material is presented.</p><p>Copyright 2015 American Association for Aerosol Research</p></div>