Atlas / SIBAL fabric · concurrent flow
BASS test GMT96-T7
composite cotton-fiberglass fabric blend (75 percent cotton and 25 percent fiberglass), concurrent flow, microgravity (ISS, Microgravity Science Glovebox)
Burned; final outcome not stated in table
Conditions and sample
- Oxygen
- 21 % by volumeRecorded for this test
- Airflow as recorded
- 10Recorded for this test
- Starting airflow
- 10 cm/sRecorded for this test
- Final airflow
- 10 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
- Burned; final outcome not stated in tableDerived by MicroFire AtlasCoded by MicroFire Atlas from the verbatim Comments column of Table 7.1.
What the crew and ground team wrote
“BASS”
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.”
“Compared with the 10-cm/s case, the 5-cm/s case has a shorter flame and spreads more slowly.”
Why linked here: The report's Figures 7.2 and 7.3 (2.2-cm sample, 21 % O2, 10 and 5 cm/s) do not name test IDs; GMT96-T7 and GMT96-T8 are the only Table 7.1 tests with exactly these conditions.
“The whole combustion process took about 40 s.”
Why linked here: Figure 7.2 conditions (2.2-cm sample, 10 cm/s, 21 % O2) match only GMT96-T7 in Table 7.1.