Cited by 33Combustion and flame dynamicsHeat transfer and supercritical fluidsAdvanced Combustion Engine Technologies

Sustainable aviation fuels approval streamlining: auxiliary power unit lean blowout testing

Peiffer, Erin E., Heyne, Joshua S., Colket, Meredith·2019·AIAA Journal

Abstract

An underpinning hindrance in the market penetration of sustainable aviation fuel is the approval process for alternative jet fuels. One solution to this is to develop low-cost screening tools that can be implemented earlier in the approval process. Auxiliary power unit combustors historically show the most sensitivity to physical and volatile fuel properties, making it a useful tool in assessing potential alternative jet fuel effects at test conditions representative of operability stability limits. It is hypothesized that these observations can be explained via timescale analysis considering fuel droplet breakup and evaporation, combustor mixing, and chemical reactivity timescales on the progression to lean blowout. This paper combines timescale theory with reduced-order fuel properties and random forest regressions to represent each of the identified timescales. Random forest regressions with only these timescale representative properties account for better than 95% of experimental variance across seven very different test conditions. An additional sensitivity analysis corroborates previous observations in which auxiliary power units are most sensitive to mixing, atomization, and evaporative timescales. Testing of these key timescale representative fuel properties requires 280 mL of fuel and could be used as a new screening tool for alternative jet fuels, reducing the time and cost for their approval.

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Crossref · 10.2514/1.j058348

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  • Combined properties at various temperatures were able to predict fuel effects on the Figure of Merit combustor behavior across multiple architectures for LBO and ignition for selected fuels.

    “Combined, these properties at various temperatures were able to predict fuel effects on the Figure of Merit combustor behavior across multiple architectures for LBO [11,12] and ignition [13] for selected fuels.”

    From Sustainable aviation fuel prescreening tools and procedures (2021) · cites this paper as [11]

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Authors
Peiffer, E. E., Heyne, J. S., & Colket, M.
Affiliations
  • University of Dayton (US)
  • United Technologies (United States) (US)
Venue
AIAA Journal
Published
2019-11
Volume
57
Issue
11
Pages
4854-4862
ISSN
  • 0001-1452 (ISSN-L)
  • 1533-385X
OpenAlex
W2954777328
Cited by
33
References
20
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2023: 2 · 2022: 3 · 2021: 8 · 2020: 8 · 2019: 1
FWCI
3.41
Type
journal article
Language
en
Open access
closed
Locations
AIAA Journal (publishedVersion)
Funders
  • Federal Aviation Administration (13-C-AJFE-UD-18)
  • Air Force Research Laboratory
Topics
  • Physical Sciences › Engineering › Computational Mechanics › Combustion and flame dynamics
  • Physical Sciences › Engineering › Computational Mechanics › Heat transfer and supercritical fluids
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Advanced Combustion Engine Technologies
Keywords
sustainable aviation fuel, alternative jet fuels, auxiliary power unit, lean blowout, screening tool, time-scale analysis, atomization, fuel properties, random forest regression, sensitivity analysis

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