Mission Planner evidence coverage of the Moon Base band
PYRION proposal — evidence coverage, not a prediction or a safety assessment.
The Moon Base band (built by PYRION from NASA atmospheres)
0 % of the band lies inside the region spanned by PSI test points. (0 of 81 grid cells, partial gravity 0.16 g.) ERL 0 · no test
The 0 % is expected, not a finding: this page counts only tests run at the band's gravity, and NASA's challenge statement says there is currently no partial-gravity combustion data in PSI, so 0 % follows by construction. What this page adds is below: what FM2 as planned would measure, which corners of the band stay unmeasured, and the nearest PSI evidence, which is in microgravity or normal gravity (open the Envelope with the Moon Base condition).
Covered means the condition lies between measured PSI test points (inside the outline around them, within the 0.5 % tolerance). No test was necessarily run at that exact condition, other axes are checked one at a time so that exact combination may never have been tested, and PYRION computes no value there. It does not mean flammability behaves the same there: combustion can change abruptly near limits, so coverage is evidence, not a prediction or a safety assessment.
PYRION convention: the two closing corners (26.5 % O2 at 8.2 psia and 34 % O2 at 10.2 psia) are not stated by any source; the rectangle is a way to close an open band with sourced limits, not a NASA design envelope. The 26.5 to 30 % part of the band is below the challenge text (30 % or more) but inside the NESC atmospheres.
Minimum test points (PYRION's geometric convention)
The fewest test points whose outline covers the band under PYRION's convention: not a test programme. It holds for one material, flow velocity and sample thickness at a time; repeats and flammability thresholds are not included. 4 points (the corners of the band). 2 are already contributed by FM2 as planned; 2 are missing: 34 % at 10.2 psia; 26.5 % at 10.2 psia.
| Corner | O₂ | Pressure | Stated by | Covered by |
|---|---|---|---|---|
| NESC 8.2 psia, low oxygen corner | 26.5 % | 8.2 psia | PYRION convention | FM2 (planned) |
| NESC Exploration Atmosphere 8.2 psia / 34 % O2 | 34 % | 8.2 psia | a source | FM2 (planned) |
| closing corner 34 % O2 at 10.2 psia | 34 % | 10.2 psia | PYRION convention | missing |
| NESC Exploration Atmosphere 10.2 psia / 26.5 % O2 | 26.5 % | 10.2 psia | a source | missing |
The smallest set of test points whose region (hull plus the 0.5 % tolerance) covers the band is the set of vertices of the band polygon, deduplicated: for a convex band, the hull of the vertices is the band itself, and no smaller set has that hull. It assumes one test per vertex, at the band gravity, for the stated fuel phase (and material), and that a test inside its own region counts like a measured point; it says nothing about how many repeats a test needs. This is a minimum under PYRION's convention that the region between measured tests counts as covered, separately for each material, flow velocity and sample thickness. Flammability limits are thresholds and need not behave monotonically: Olson and T'ien (NTRS 20000057046, PDF p. 3) report, for gaseous diffusion flames in drop-tower tests, "a quenching limit at low stretch and a U-shaped flammability boundary with fuel percentage and stretch rate as coordinates was experimentally demonstrated". Covering the corners therefore does not show that everything between them behaves like the tests; it only makes the band comparable under that convention.
Coverage gained per test
| Experiment | Tests | Shape | Coverage | Cells gained | Gain per test | Note |
|---|---|---|---|---|---|---|
| fm2-with-tolerance-bounds | 8 | area | 0 % → 22.2 % | 18 | 2.25 | The tests span an area of the oxygen–pressure plane. |
| fm2 | 4 | line | 0 % → 11.1 % | 9 | 2.25 | Every test lies on one line (one pressure or one oxygen level): the tested region has no area; the cells gained are those on the line within the 0.5 % tolerance. |
| luci | 0 | cannot be placed | 0 % → 0 % | 0 | 0 | LUCI burned samples "in air at normal pressure" in simulated partial gravity (rotating vehicle). The source passage gives no pressure figure and no oxygen figure, so PYRION cannot place it in the oxygen–pressure plane and does not guess one. |
Planned experiments are hypothetical: HYPOTHETICAL — built from what a planning document states; no measurement exists, and nothing here is written to the data.
Design your experiment
Hypothetical — not a measurement. Click the plot above to add test points (drag a point to move it); the engine recomputes the coverage.
No points yet.
Gap report
Open the print view (save as PDF) · Download .md
Fingerprint (SHA-256 of the report data, pyrion-applicability-engine 0.2.0): 89c08719778164761886fa09cf170f6c1f6f3ee9ea9775dfb23a09cd95724ed7
Evidence readiness (ERL) by habitat and fuel phase
PYRION convention, like NASA's TRL, for evidence; it measures how much measured evidence exists, never safety.
| Habitat | solid | liquid | gas |
|---|---|---|---|
| ISS cabin air | ERL 3 · near extrapolation | ERL 4 · measured | ERL 4 · measured |
| Moon Base / pressurized rover (challenge) | ERL 0 · no test | ERL 0 · no test | ERL 0 · no test |
| NASA exploration atmosphere, 10.2 psia / 26.5 % O2 | ERL 0 · no test | ERL 0 · no test | ERL 0 · no test |
| NASA exploration atmosphere, 8.2 psia / 34 % O2 | ERL 0 · no test | ERL 0 · no test | ERL 0 · no test |
| Spacesuit | Outside PSI: no investigation in the extracted records concerns a suit atmosphere, so it is not evaluated here. | ||
- ERL 4 · measured: PSI measured this condition: at least one investigation is comparable (APPLICABLE).
- ERL 3 · near extrapolation: Not measured, but just outside tested data, or each setting was tested only separately (extrapolation: just outside or combination).
- ERL 2 · far extrapolation: Not measured and well outside tested data (extrapolation: outside or far outside).
- ERL 1 · comparable only in another regime: Comparable oxygen and pressure records exist only in another gravity regime, fuel phase or atmosphere type (regime barrier).
- ERL 0 · no test: No PSI test in that gravity regime anywhere, or the extracted records cannot be compared with it.