Published · not in PSIPUB-OLSON-FERKUL-2012Investigation dossier

Olson & Ferkul 2012

Drop-tower limiting O₂ at 1 g, Mars, Moon, 0 g (Table I)

Principal investigator: not stated in source
Platform: Drop tower (5.18 s)
Hardware: not stated in source
Dates: not stated in source
Licence: not stated in source
Status: published values, not in PSI; shown only when “Include published evidence” is on

Source document (opens in a new tab)ntrs.nasa.gov/citations/20130010991

Evidence proximity, not a safety rating. This page describes what was tested and where each value comes from.

Footprint · Microgravity

Where Olson & Ferkul 2012’s runs sit in condition space, in the Atlas chart window. Other investigations’ runs in this regime are dimmed.

3 of 12 runs drawn · 9 in lunar (0.165 g), martian (0.38 g), earth (1 g) are drawn separately below; regimes are never mixed.

Source: NASA PSI run tables (snapshot 2026-11-14) and the published papers listed under Sources. Evidence proximity, not a safety rating; not a hazard map.

Objective

No objective text; see the source document.

Fingerprint COMPUTED

Computed from the 12 records below: what varied, what was held constant, and what was never recorded.

Varied

O₂ 15.6–24.0 % · 10 levels · reported limit
Pressure 70.3–101.3 kPa · 2 levels · nominal (stated, not measured)
pressure · 2 values

Held constant

Flow 30.0 cm/s · nominal (stated, not measured)

Not recorded

Flow missing in 9 of 12 rows · not reported in source

Condition axes: what varied and what was held constant
Axis	State	Range	Basis	Recorded
O₂	varied	15.6–24.0 % · 10 levels	reported limit	12/12
Pressure	varied	70.3–101.3 kPa · 2 levels	nominal (stated, not measured)	12/12
Flow	held constant	30.0 cm/s	nominal (stated, not measured)	3/12

Placeable: 12 of 12 record O₂ and can be placed (the engine can compute a distance); 12 also record pressure and appear on the charts.
Gravity: Earth (1 g) (3) · Martian (0.38 g) (3) · Lunar (0.165 g) (3) · Microgravity (3)
Fuel classes: Solid · unclassified (8) · Solid · thin (4)
Flow regime: natural convection (9) · concurrent flow (3)
Materials (3): Mylar G (5 mil) (4) · Ultem 1000 (10 mil) (4) · Nomex HT90-40 (12 mil fabric) (4)
Outcomes: not recorded (12)
Measured quantities: MOC [% O₂] (12)
Data-quality flags: limit-value × 12: A reported limit: a threshold inferred by the authors from a test series, not a tested condition.
nominal-value × 12: A value stated in a document, not measured in this run.

Where the runs sit: O₂ × pressure, zoomed to the data

12 of 12 runs record both ambient O₂ and pressure and are plotted. Each gravity regime has its own panel; regimes are never compared with one another.

Microgravity 3 runs

Lunar (0.165 g) 3 runs

Martian (0.38 g) 3 runs

Earth (1 g) 3 runs

reported limit: not a tested condition
reference atmosphere

Source: the normalized O₂ and pressure of each run in the run table below (NASA PSI run tables or the cited paper); the original cell and any conversion are in each run’s provenance. Reference atmospheres are MARGIN’s presets. Not a hazard map.

Published records

Values transcribed from the paper (published, not a PSI table row), with the source locator and verification state of each record.

Olson & Ferkul 2012: 12 records.

Olson & Ferkul 2012: 12 records. Each value cell shows the normalized value and, beneath it, the original cell as it appears in the source.
Record	Material	Fuel class	g	O₂ %	Pressure kPa	Flow cm/s	Outcome	Flags	Source locator	Verification
Mylar G:earth	Mylar G (5 mil)	Solid · thin	1 g	21.2 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:mars	Mylar G (5 mil)	Solid · thin	Mars	18.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:moon	Mylar G (5 mil)	Solid · thin	Moon	15.6 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:micro	Mylar G (5 mil)	Solid · thin	µg	17.0 limittranscribed	70.3 nominal10.2 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:earth	Ultem 1000 (10 mil)	Solid · unclassified	1 g	23.5 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:mars	Ultem 1000 (10 mil)	Solid · unclassified	Mars	22.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:moon	Ultem 1000 (10 mil)	Solid · unclassified	Moon	21.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:micro	Ultem 1000 (10 mil)	Solid · unclassified	µg	24.0 limittranscribed	70.3 nominal10.2 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:earth	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	1 g	23.5 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:mars	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	Mars	19.9 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:moon	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	Moon	21.0 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:micro	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	µg	23.0 limittranscribed	101.3 nominal14.7 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6

Investigation dossier

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Reading the record, its runs and their sources.

Olson & Ferkul 2012

Drop-tower limiting O₂ at 1 g, Mars, Moon, 0 g (Table I)

Principal investigator

not stated in source

Platform

Drop tower (5.18 s)

Hardware

not stated in source

Dates

not stated in source

Licence

not stated in source

Status

published values, not in PSI; shown only when “Include published evidence” is on

Evidence proximity, not a safety rating. This page describes what was tested and where each value comes from.

Fingerprint COMPUTED

Computed from the 12 records below: what varied, what was held constant, and what was never recorded.

Varied

O₂ 15.6–24.0 % · 10 levels · reported limit
Pressure 70.3–101.3 kPa · 2 levels · nominal (stated, not measured)
pressure · 2 values

Held constant

Flow 30.0 cm/s · nominal (stated, not measured)

Not recorded

Flow missing in 9 of 12 rows · not reported in source

Condition axes: what varied and what was held constant
Axis	State	Range	Basis	Recorded
O₂	varied	15.6–24.0 % · 10 levels	reported limit	12/12
Pressure	varied	70.3–101.3 kPa · 2 levels	nominal (stated, not measured)	12/12
Flow	held constant	30.0 cm/s	nominal (stated, not measured)	3/12

Placeable

12 of 12 record O₂ and can be placed (the engine can compute a distance); 12 also record pressure and appear on the charts.

Gravity

Earth (1 g) (3) · Martian (0.38 g) (3) · Lunar (0.165 g) (3) · Microgravity (3)

Fuel classes

Solid · unclassified (8) · Solid · thin (4)

Flow regime

natural convection (9) · concurrent flow (3)

Materials (3)

Mylar G (5 mil) (4) · Ultem 1000 (10 mil) (4) · Nomex HT90-40 (12 mil fabric) (4)

Outcomes

not recorded (12)

Measured quantities

MOC [% O₂] (12)

Data-quality flags

limit-value × 12: A reported limit: a threshold inferred by the authors from a test series, not a tested condition.
nominal-value × 12: A value stated in a document, not measured in this run.

Published records

Values transcribed from the paper (published, not a PSI table row), with the source locator and verification state of each record.

Olson & Ferkul 2012: 12 records.

Olson & Ferkul 2012: 12 records. Each value cell shows the normalized value and, beneath it, the original cell as it appears in the source.
Record	Material	Fuel class	g	O₂ %	Pressure kPa	Flow cm/s	Outcome	Flags	Source locator	Verification
Mylar G:earth	Mylar G (5 mil)	Solid · thin	1 g	21.2 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:mars	Mylar G (5 mil)	Solid · thin	Mars	18.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:moon	Mylar G (5 mil)	Solid · thin	Moon	15.6 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Mylar G:micro	Mylar G (5 mil)	Solid · thin	µg	17.0 limittranscribed	70.3 nominal10.2 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:earth	Ultem 1000 (10 mil)	Solid · unclassified	1 g	23.5 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:mars	Ultem 1000 (10 mil)	Solid · unclassified	Mars	22.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:moon	Ultem 1000 (10 mil)	Solid · unclassified	Moon	21.0 limittranscribed	70.3 nominal10.2 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Ultem 1000:micro	Ultem 1000 (10 mil)	Solid · unclassified	µg	24.0 limittranscribed	70.3 nominal10.2 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:earth	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	1 g	23.5 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:mars	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	Mars	19.9 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:moon	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	Moon	21.0 limittranscribed	101.3 nominal14.7 psia	not recordednatural convectiontranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6
Nomex HT90-40:micro	Nomex HT90-40 (12 mil fabric)	Solid · unclassified	µg	23.0 limittranscribed	101.3 nominal14.7 psia	30.0 nominalconcurrent flowtranscribed	not recorded	limit-value, nominal-value	Olson & Ferkul, ICES-2012-3492 · Table I, p. 6“Limiting Oxygen Molar Concentrations and Oxygen Margin of Safety for Different Gravity Levels”	PUBLISHEDchecked against primary source · Table I, p. 6