Hardware: Saffire III enclosure in Cygnus · Program: International Space Station (ISS) · Fuel phase: Solid · DOI 10.60555/040q-4h36
Objective
The objectives of this investigation were to: (1) determine how rapidly a large scale fire grows in low-gravity and (2) investigate the low-g flammability limits compared to those obtained in NASA’s normal gravity material flammability screening test.
SAFFIRE-III (PSI-100, Saffire III enclosure in Cygnus, International Space Station (ISS)). 2 test runs from NASA PSI (DOI 10.60555/040q-4h36).
Metadata Completeness
33%
Share of key conditions (oxygen, pressure, airflow) reported in the source tables.
Representative Conditions
Median of the values reported across this investigation's test runs.
- Fuel / Material
- SIBAL cotton-fiberglass
- Gravity
- 0 g (microgravity, ISS / Cygnus flight)
- Airflow-Equivalent Gravity
- 2 of 2 runs, ~1 g (2)
- Oxygen Concentration
- Not reported
- Ambient Pressure
- Not reported
- Airflow Velocity
- 0.3 m/s
The PSI record mentions both flight and ground work; 0 g reflects its ISS / Cygnus flight metadata.
Findings summary
2 test runs recorded; 30.0–30.0 cm/s (n=2); microgravity (0 g, ISS / Cygnus flight); 2 runs have airflow comparable to partial-gravity buoyancy.
Source: NASA PSI PSI-100: PSI-100_Experimental table_SAFFIRE-3.csv (psi.nasa.gov). File, sheet and row are listed per test run below.
Experiment Design: Held Constant vs Varied
What stayed fixed across test runs, what was changed, and what was measured, from the NASA test tables.
Experimental table SAFFIRE-3 · 2 runs · 5 held constant · 1 varied · 0 measured
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Instrument and imaging settings (2)
- Camera 1
- Camera 2
Test Runs (2)
Conditions and measurements for each run. Open a run to see every value and its source row.
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