INFERNITYFLAME IN FREEFALL

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Attribute
Hardware groupUngrouped
Pillars
Detection
Fuel phaseNo fuel
MaterialAmbient ISS airborne particulate and released test particles
ShapeAirborne aerosol sampling
SizeNot specified
O2 concentrationVaried / not specified
PressureVaried / not specified
AirflowVaried / not specified
FacilityHand-held P-Trak particle counter operated inside the ISS cabin
Module / vehicleInternational Space Station
Sensors
  • P-Trak ultrafine particle counter
  • Isopropyl-alcohol condensation chamber
  • Light-beam particle detector
Variables tested
  • Repeatability of microgravity particle counts
  • Ambient particulate variability across ISS locations
  • Detector discrimination between dust and smoke-sized aerosol
ObjectivesContinue the DAFT particle-counting campaign on ISS to build a more representative particulate baseline for spacecraft smoke-detector design.
Key findings
  • Extended the DAFT aerosol measurements with additional ISS test points.
  • Reinforced the finding that on-orbit particulate sizes can exceed typical ground values.
  • Provided background data needed for detectors that must distinguish dust from smoke.
Relevant environments
Spacecraft cabinSpace station
SourceNASA PSI