Hardware: Microgravity Science Glovebox (MSG) · Program: International Space Station (ISS) · Fuel phase: Solid · DOI 10.60555/4qc4-de67
Objective
BASS-II results contribute to the combustion computational models used in the design of fire detection and suppression systems in microgravity and on Earth. Objectives Include: 1) Study the ignition, flame growth, flame spread, and extinction limits for solid fuels burning in low-velocity forced flows in microgravity. 2) Begin to bridge the gap between the normal gravity NASA-STD-6001 Test #1 method, ground-based microgravity tests, and actual material flammability in microgravity. 3) Provide SoFIE PIs with preliminary data to refine Science Requirements. 4) Practical, realistic (thicker) fuels in typical geometries will be examined, including slabs, cylinders, and spherical sections. The primary variables include: • Forced flow velocity (speed and direction) • Ambient oxygen concentration (via working volume nitrogen vitiation) • Sample geometry (rods, spherical section, slabs, films, and fabric sheets
BASS-II (PSI-25, Microgravity Science Glovebox (MSG), International Space Station (ISS)). 129 test runs from NASA PSI (DOI 10.60555/4qc4-de67).
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
- PMMA, 100 micron film 2 cm wide, 200 micron 2 cm wide, 400 micron film 2 cm wide, 300 micron film 2 cm wide, 2 cm 0.4 mm thick film, Nomex, Wax candle, Black PMMA rod, 1/4 blac rod, SIBAL cotton-fiberglass, 4 cm spherical section
- Gravity
- 0 g (microgravity, ISS / Cygnus flight)
- Oxygen Concentration
- 18.2%
- Ambient Pressure
- Not reported
- Airflow Velocity
- Not reported
The PSI record mentions both flight and ground work; 0 g reflects its ISS / Cygnus flight metadata.
Findings summary
129 test runs recorded; 13.6–22.2 % O2 (n=129); microgravity (0 g, ISS / Cygnus flight).
Source: NASA PSI PSI-25: PSI-25_Experimental table_BASS-II.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 BASS-II · 129 runs · 0 held constant · 5 varied · 3 measured
Loading variables…
Science Documents BASS-II Test.Matrices [T'ien] · 29 runs · 0 held constant · 5 varied · 3 measured
Science Documents BASS-II Test.Matrices [Fernandez-Pello] · 27 runs · 1 held constant · 4 varied · 3 measured
Science Documents BASS-II Test.Matrices [Olson] · 27 runs · 0 held constant · 5 varied · 3 measured
Science Documents BASS-II Test.Matrices [Bhattacharjee] · 22 runs · 0 held constant · 5 varied · 3 measured
Science Documents BASS-II Test.Matrices [Miller] · 20 runs · 0 held constant · 5 varied · 3 measured
Science Documents BASS-II Test.Matrices [Ferkul] · 4 runs · 0 held constant · 5 varied · 3 measured
Instrument and imaging settings (10)
- Air display
- Date
- Fan display
- GMT
- Radiometer gain
- Total Frames Shot
- Actual Date
- GMT 2014-
- Radiometer gain
- GMT 2014-
Test Runs (129)
Conditions and measurements for each run. Open a run to see every value and its source row.
Loading the first 50 of 129 runs…