Document Type
Article
Publication Date
11-2019
Publication Source
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.
Inclusive pages
4854-4862
ISBN/ISSN
0001-1452
Document Version
Published Version
Publisher
Amer Inst Aeronautics Astronautics
Volume
57
Issue
11
Peer Reviewed
yes
eCommons Citation
Peiffer, Erin E.; Heyne, Joshua S.; and Colket, Meredith, "Sustainable Aviation Fuels Approval Streamlining: Auxiliary Power Unit Lean Blowout Testing" (2019). Mechanical and Aerospace Engineering Faculty Publications. 247.
https://ecommons.udayton.edu/mee_fac_pub/247
Comments
This open-access article is provided for download in compliance with the publisher’s policy on self-archiving. To view the version of record, use the DOI: https://doi.org/10.2514/1.J058348