Recalibrated Nitrogen-Oxide (NOx) Emission-Index Model for Hydrogen Combustion Aircraft Engine Performance Analysis
This study recalibrates a computationally efficient p3T3-based NOx emission-index model using expanded literature data to improve prediction accuracy for hydrogen aircraft engines, achieving a higher R² of 0.77 while quantifying uncertainties and demonstrating that hydrogen combustion still produces lower NOx emissions than kerosene under comparable conditions.