CATALOG
SPICE DUCT GROUP/GASEOUS FUEL/SPICE
Smoke Point in Co-flow Experiment (SPICE)
Prevention
Spacecraft cabinSpace stationLunar baseAI summary
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Generated from the curated record only. The model is instructed not to invent numbers; verify all values against the source before engineering use.
Experimental setup
FUEL
- Phase
- Gaseous
- Material
- Propylene, propane, ethylene and selected fuel mixtures
- Shape
- Laminar gas jet in a co-flowing oxidizer
- Size
- Three nozzle sizes
CONDITIONS
- O2 concentration
- 21%
- Pressure
- Varied / not specified
- Airflow
- Varied / not specified
Single values are documented test conditions, not flammability limits. Ranges appear under variables tested.
OBJECTIVES
Determine the laminar smoke point of non-buoyant jet diffusion flames, measure flame shape and stabilization height, and verify temperature-field predictions.
Sensors & measurements
- Video and still cameras for luminous flame shape
- Thermocouple rake for temperature field
- Anemometer for co-flow velocity
- Gas delivery and mass flow controllers
Variables tested
- Fuel type and fuel mixture
- Nozzle diameter
- Co-flow air velocity
- Fuel flow rate up to the smoke point
Key findings
- 01Completed 250 combustion tests with propylene, propane, ethylene and other mixtures.
- 02Identified more than 70 smoke points, yielding estimates of soot-forming conditions and flame dimensions.
- 03Showed how co-flowing air speed affects smoke points and soot production in microgravity.
- 04Soot controls radiative heat emission, which is central to predicting fire spread and heat release in spacecraft fires.