Atlas / SIBAL fabric · concurrent flow
BASS-II test GMT190-T21
composite cotton-fiberglass fabric blend (75 percent cotton and 25 percent fiberglass), concurrent flow, microgravity (ISS, Microgravity Science Glovebox)
Blew off at high flow
Conditions and sample
- Oxygen
- 17.2 % by volumeRecorded for this test
- Airflow as recorded
- 11 to 47 (changed during the test)Recorded for this test
- Starting airflow
- 11 cm/sRecorded for this test
- Final airflow
- 47 cm/sRecorded for this test
- Pressure
- 101.325 kPa (1 atm)Stated for the whole test series: “Ambient pressure was 1 atm.” BASS-II Summary Report, §7.1.3, PDF p. 102
- Thickness
- 0.32 mmStated for the whole test series: “The thickness of the sample is about 0.32 mm” BASS-II Summary Report, §7.1.3, PDF p. 102
- Width
- 12 mmRecorded for this test
- Exposed length
- 100 mmStated for the whole test series: “Both have an exposed length of 10 cm.” BASS-II Summary Report, §7.1.3, PDF p. 102
- Outcome code
- Blew off at high flowDerived by MicroFire AtlasCoded by MicroFire Atlas from the verbatim Comments column of Table 7.1.
What the crew and ground team wrote
“Blow-off”
Published findings about this test family
“The quenching speeds were found to be between 1 and 5 cm/s with higher speed in lower oxygen atmosphere.”
“Flames spread more slowly across the narrower samples, at lower flow velocities and at lower O2 percentages.”