The comparison bench
Compare near-matched conditions, check every difference, and inspect what NASA recorded.
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Dr. Mei · What changed between the runs?
Each preset keeps as many conditions the same as NASA's tables allow, so the one that changes stands out. What was recorded, what we infer, and what is missing are kept apart.
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Airflow
Oxygen
| F2 | F3 | F1 | |
|---|---|---|---|
| Experiment | BASS and BASS-II | BASS and BASS-II | BASS and BASS-II |
| Material | Nomex | Nomex | Nomex |
| Thickness | not stated | not stated | not stated |
| Width | not stated | not stated | not stated |
| Flow direction | concurrent | concurrent | concurrent |
| Oxygen (differs) | 21 % | 20.8 % | 20.6 % |
| Airflow (differs) | “15” | “8” | “9.5” |
| Pressure | not stated | not stated | not stated |
| Outcome | Ignited briefly, no sustained flame | Ignited briefly, no sustained flame | Ignited briefly, no sustained flame |
| NASA notes | “Tried to ignite, flame would not sustain” | “Brief ignition flash, no sustained flame; no postburn sensor readings taken” | “Ignited briefly but did not spread at all and extinguished while the igniter was still on” |
| Source | BASS-II Summary Report, Table A.2, PDF p. 113 | BASS-II Summary Report, Table A.2, PDF p. 113 | BASS-II Summary Report, Table A.2, PDF p. 113 |
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