Lower heating value of jet fuel from hydrocarbon class concentration data and thermo-chemical reference data: An uncertainty quantification

•A detailed LHV determination method with uncertainty quantification is reported.•Determinations leverage a fundamental approach with GC × GC-FID measured class concentrations.•Uncertainty quantifications consider isomeric, GC, and heats of formation variance.•All 17 determinations from this work agree with ASTM D4809 measurements.•The ASTM D3338 estimation method agrees poorly with ASTM D4809 for alternative fuels.