Low temperature autoignition of Jet A and surrogate jet fuel
An experimental study of the low-temperature and low-pressure autoignition of Jet A and surrogate fuels was conducted using the ASTM-E659 standardized test method. Two surrogate fuels (Aachen and JI mixtures), their individual components and two batches (POSF-4658 and POSF-10325) of standardized Jet A were tested using the ASTM-E659 method for a range of fuel concentrations and temperatures. The ignition behaviors were categorized into four distinct ignition modes. The individual hydrocarbon components had a wide range of ignition behaviors and minimum autoignition temperatures (AIT) values depending on the molecular structure. The two Jet A batches showed similar ignition behavior with measured AITs of 229 ±3°C and 225 ±3°C respectively. Both surrogates exhibited similar ignition behavior to Jet A with comparable AITs of 219 ±3.1°C (Aachen) and 228 ±3°C (JI) with the JI mixture proving to be a more suitable surrogate to Jet A in the low-temperature thermal ignition regime.
© 2021 Elsevier Ltd. Received 28 November 2020, Revised 11 February 2021, Accepted 3 March 2021, Available online 20 March 2021. This work was carried out in the Explosion Dynamics Laboratory of the California Institute of Technology and was partially supported by The Boeing Company (CT-BA-GTA-1). Conor Martin was also supported by the Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program. The GC-FID measurements were made in the Caltech Environmental Analysis Center with the guidance of Dr. Nathan Deleska. Credit author statement: Conor D. Martin: Data curation, Methodology, Investigation, Writing – original draft. Joseph E. Shepherd: Conceptualization, Funding acquisition, Supervision, Writing – review & editing. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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