Atlas / PMMA film · opposed flow
BASS-II test B15
2-cm, 0.1-mm PMMA film, opposed flow, microgravity (ISS, Microgravity Science Glovebox). Principal investigator: Bhattacharjee. Listed date 2014-07-07
Kept burning at high flow (no blowoff)
Conditions and sample
- Oxygen
- 20.1 % by volumeRecorded for this testTaken from NASA's 'Calibrated initial O2 vol%' column.
- Airflow as recorded
- 10, max (changed during the test)Recorded for this test
- Starting airflow
- 10 cm/sDerived by MicroFire AtlasFirst value of the 'Air display' column (air velocity transducer, cm/s). Later 'pot' values are fan potentiometer settings, not velocities, and are not converted.
- Pressure
- 99.2–99.5 kPaStated for the whole test series: “The total pressure is also monitored, which varied from 99.2 to 99.5 kPa in the tests reported.” BASS-II Summary Report, §2.3.5, PDF p. 46Series-level range from the Bhattacharjee report section; not a per-test reading.
- Thickness
- 0.1 mmRecorded for this test
- Width
- 20 mmRecorded for this test
- Exposed length
- Not statedNot stated in the source
- Outcome code
- Kept burning at high flow (no blowoff)Derived by MicroFire AtlasCoded by MicroFire Atlas from the verbatim observations column.
What the crew and ground team wrote
“Spread at 10 cm/s, did not blowoff”
Gas readings before and after the burn
| Initial | Final | |
|---|---|---|
| O₂, vol % | 20.1 | 19.9 |
| CO₂, vol % | 0.33 | 0.43 |
| CO, ppm | 0 | 22 |
Readings of the glovebox work volume, from NASA's table columns. They describe the enclosure, not the flame.