SAEED HOSSEINI; MOHAMMAD ALI VAZIRY-ZANJANY; HAMID REZA OVESY

DOI Number: 10.13009/EUCASS2023-007

A design optimization methodology is implemented in a multidisciplinary aircraft design framework to optimize a regional very-high aspect ratio truss-braced wing aircraft layout considering both cost and emission requirements. A detailed emission model is incorporated to calculate the emission masses and temperature responses due to the engine emissions. Since the design variables include the mission param­eters, namely the cruise altitude and cruise Mach number, an engine sizing module based on the thermo­dynamic cycle is integrated into the design. The results show that the optimum configuration for emission and cost are quietly different. The emission objective drives the design toward lower cruise altitudes and Mach numbers (i.e. 20 [kft] and Mach 0.4), while the cost objective drives the design toward higher Mach numbers and altitudes. The reason is found to be the mechanism by which these emissions are formed and affect the temperature rise, particularly the altitude at which these emissions are created. At the end, the effect of engine bypass ratio, and mission profile (cruise altitude and cruise speed) are analyzed.

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In Categories: 1. Aerospace Europe Conference 2023, 1.Events, 15. Sustainable Aviation
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