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Reading the record, its runs and their sources.
Investigation dossier
Reading the record, its runs and their sources.
PSI recordPSI-20Investigation dossier
Advanced Combustion via Microgravity Experiments - Burning Rate Emulator
PSI record (opens in a new tab)doi 10.60555/vb93-3y72 (opens in a new tab)psi.nasa.gov/physci/repo/data/investigations/PSI-20
Evidence proximity, not a safety rating. This page describes what was tested and where each value comes from.
ACME BRE has no individual runs to place.
0 of 0 runs drawn.
As written in the PSI record:
The BRE flight program seeks to establish the burning conditions in a quiescent microgravity ambient in terms of material properties. The specific flight objectives are as follows. 1. Observe burning behavior in long-duration microgravity for CH4/N2 and C2H4/N2mixtures on porous circular burners of 25 and 50 mm diameter. Consider O2/N2 ambients with various pressures and ambient O2 concentrations and pressures. NASA - considered atmosphere for human space missions will be examined: 14.7 psia, 21 % oxygen: 10.2 psia, 26.5 %; and 8.2 psia, 34 % oxygen. Emphasize fuel conditions that can be related to a diverse range of condensed fuels. 2. Consider the conditions of Objective 1 for ambients of O2/CO2 (desired). 3. Consider the conditions of Objectives 1 – 2 for extinction limits.
PSI has summary rows only for this investigation (18 rows in PSI-20_Experimental table_ACME BRE.csv), not individual runs, so there is nothing to fingerprint run by run. The summary rows are listed below.
Nothing from this investigation can be placed on an O₂ × pressure chart: there are no individual runs to place.
PSI has no run-level table for this investigation: its experimental table holds summary rows only (each summarises a test series, not a single run), so nothing is placed or compared. The summary rows are listed below.
18 summary rows from PSI-20_Experimental table_ACME BRE.csv, as they appear in PSI.
| Row | Year | Month | Date | Burner Size (mm) | Fuel Bottle | Oxygen Conc (percent) | Flames Ignited | Notes |
|---|---|---|---|---|---|---|---|---|
| 1 | 2019 | Feb | 8 | 25 | 100% C2H4 | 21; 26.5; 40 | 10 | Oxygen Conc. (as diluted with nitrogen on a volume basis) was varied between tests where approximate concentrations for tests that ignited are listed. The chamber pressures were also varied but are not identified in this summary table. |
| 2 | 2019 | Feb | 20 | 25 | 100% C2H4 | 26.5; 34 | 8 | Flames Ignited is the number ignited on that day (neglecting the day change on ISS). |
| 3 | 2019 | Feb | 25 | 25 | 50% C2H4 | 21; 26.5; 34; 40 | 8 | |
| 4 | 2019 | March | 4 | 25 | 50% C2H4 | 26.5; 40 | 6 | |
| 5 | 2019 | March | 7 | 25 | 50% C2H4 | 3400% | 6 | |
| 6 | 2019 | March | 11 | 25 | 50% C2H4 | 26.5; 34 | 7 | |
| 7 | 2019 | March | 28 | 25 | 100%C2H4 | 26.5; 34 | 8 | |
| 8 | 2019 | April | 1 | 25 | 100%C2H4 | 2100% | 0 | |
| 9 | 2019 | April | 4 | 25 | 100%C2H4 | 21; 26.5; 34 | 9 | |
| 10 | 2020 | Sept | 3 | 50 | 100% C2H4 | 25; 34; 40 | 13 | |
| 11 | 2020 | Oct | 17 | 25 | 100% C2H4 | 26.5; 34 | 13 | |
| 12 | 2020 | Dec | 5 | 25 | 100% CH4 | 25; 34; 40 | 21 | |
| 13 | 2020 | Dec | 4 | 25 | 100% CH4 | 25; 40 | 18 | |
| 14 | 2020 | Dec | 11 | 25 | 50% C2H4 | 25; 40 | 12 | |
| 15 | 2020 | Dec | 17 | 25 | 100% C2H4 | 34; 40 | 10 | |
| 16 | 2020 | Dec | 23 | 25 | 100% C2H4 | 25; 34; 40 | 17 | |
| 17 | 2021 | Jan | 20 | 25 | 100% C2H4 | 21; 26.5; 34 | 15 | |
| 18 | 2021 | Jan | 28 | 50 | 100% C2H4 | 25; 34; 40 | 13 |