INFERNITYFLAME IN FREEFALL
CATALOG
MDCA GROUP/LIQUID FUEL/FLEX-2

Flame Extinguishment Experiment - 2 (FLEX-2)

Suppression
Spacecraft cabinSpace station
ComparePSI record
AI summary
AI-GENERATED

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
Liquid
Material
Single and paired fuel droplets, including bi-component and surrogate fuels
Shape
Single droplets, binary droplet arrays, and tethered droplets in convection
Size
Droplets 2 to 4 mm in diameter

CONDITIONS

O2 concentration
Varied / not specified
Pressure
Varied / not specified
Airflow
Varied / not specified

Single values are documented test conditions, not flammability limits. Ranges appear under variables tested.

OBJECTIVES

Extend droplet combustion research to flowing environments, interacting droplets and practical multicomponent fuels, producing validated models of real-fuel combustion.

Sensors & measurements
  • High-speed color and video imaging
  • Radiometers
  • Soot volume fraction diagnostics
  • Droplet position and fiber-support instrumentation
Variables tested
  • Pure fuels versus fuel mixtures and surrogates
  • Sub-buoyant convective flow around a tethered droplet
  • Droplet-droplet interactions in a binary array
  • Inter-droplet spacing and ambient composition
Key findings
  1. 01Studied single droplets, binary droplet arrays and tethered droplets under controlled sub-buoyant flow.
  2. 02Examined liquid-phase mixing in bi-component and surrogate fuels as they vaporize and burn.
  3. 03Quantified soot formation and droplet-droplet interactions in a spherically symmetric geometry.
  4. 04Four experiment groupings each involved roughly 30 to 60 tests.