Hardware: Combustion Integrated Rack (CIR), Multi-user Droplet Combustion Appartatus (MDCA) · Program: International Space Station (ISS) · DOI 10.60555/byp8-h018
Objective
The primary goal of the FLEX-2 flight experiments is to extend the results of FLEX-1 to fuels and environmental conditions that mimic real combustor conditions, as well as, provide benchmark experimental data on bi-component droplet combustion over a wide range of initial conditions in order to validate numerical simulations and to develop new theoretical models. Detailed experimental objectives can be further itemized as: 1. Investigate the role of liquid-phase mixing on the burning characteristics of bi-component fuel droplets. 2. Examine the steady and unsteady liquid and gas-phase phenomena in pure fuel combustion. 3. Study flame extinction mechanisms and their boundaries. 4. Analyze the soot formation process, including soot volume fraction soot-shell dynamics. 5. Determine the influence of droplet interactions on the flammability limits and extinction behavior of droplet arrays. 6. Validate theoretical models of droplet combustion through comprehensive experimental data collection in microgravity environments.
FLEX-2 (PSI-68, Combustion Integrated Rack (CIR), Multi-user Droplet Combustion Appartatus (MDCA), International Space Station (ISS)). 2 test runs from NASA PSI (DOI 10.60555/byp8-h018).
Metadata Completeness
0%
Share of key conditions (oxygen, pressure, airflow) reported in the source tables.
Representative Conditions
Median of the values reported across this investigation's test runs.
- Fuel / Material
- Not reported
- Gravity
- 0 g (microgravity, ISS / Cygnus flight)
- Oxygen Concentration
- Not reported
- Ambient Pressure
- Not reported
- Airflow Velocity
- Not reported
Findings summary
2 radiometer test-point summary rows (RDTST01, LCTF001) parsed from RDTST01_and_LCTF001_Radiometer_Readings.xlsx; the workbook states no fuel, droplet, pressure or O2 values; microgravity (0 g, ISS / Cygnus flight).
Source: NASA PSI PSI-68: RDTST01_and_LCTF001_Radiometer_Readings.xlsx (psi.nasa.gov). File, sheet and row are listed per test run below.
Experiment Design: Held Constant vs Varied
What stayed fixed across test runs, what was changed, and what was measured, from the NASA test tables.
Experimental table Flex2 · 8 runs · 6 held constant · 1 varied · 0 measured
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Test Runs (2)
Conditions and measurements for each run. Open a run to see every value and its source row.
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