Atlas / SIBAL fabric · concurrent flow
BASS-II test GMT178-T17
composite cotton-fiberglass fabric blend (75 percent cotton and 25 percent fiberglass), concurrent flow, microgravity (ISS, Microgravity Science Glovebox)
Kept burning at high flow (no blowoff)
Conditions and sample
- Oxygen
- 16.9 % by volumeRecorded for this test
- Airflow as recorded
- 6 to 53 (changed during the test)Recorded for this test
- Starting airflow
- 6 cm/sRecorded for this test
- Final airflow
- 53 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
- 22 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
- Kept burning at high flow (no blowoff)Derived by MicroFire AtlasCoded by MicroFire Atlas from the verbatim Comments column of Table 7.1.
What the crew and ground team wrote
“No blowoff”
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.”