*4.1. Influence of the Expert Weights*

Regarding the influence of expert weighting, two solution spaces have been generated—one applying geometric mean aggregation with equal expert weights and another one using the DMs' expertise as weights (see Section 3.7). Multiple weighting possibilities have been experimented with when obtaining the total expertise of each DM—e.g., no weighting of the expertise domains, their equal weights, as well as the selection of specific (most relevant) domains for the corresponding attribute. However, the analysis of the aggregation results and the obtained solutions yields a negligible difference in the final option evaluations and thus almost identical solution spaces. Two possible causes for such outcome might be:


The first aspect might be due to the homogeneity of the professional background of most participants coming mostly from the domains of aircraft design and aerostructures.
