Analysis of Axiomatic Design influence on aircraft design process

Today, product design has experienced fundamental changes. Design criteria have changed from focusing on product performance to sustainable criteria. This has increased the contrast between traditional and new requirements and consequently increasing the design complexity. In this regard, traditional methods are incapable to solve the problems of product design. Therefore, in the last decades, many efforts have been made to solve these challenges to improve the design process. As a result, various design methodologies such as multidisciplinary design optimization (MDO) and knowledge-based engineering (KBE) were developed. These approaches could support the improvement of current and novel product designs. Axiomatic Design (AD) is another design process that could reduce the coupling between various Functional Requirements (FRs) and Design Parameters (DPs) and consequently, reduce the complexity of the design process. In this regard, the innovation and the purpose of this article is identifying the effects of using AD in aircraft conceptual design process. The results show, by using AD for the selected case study, the iteration design steps in aircraft weight and performance sizing are reduced almost 35% in the comparation with traditional approach. In fact, after using AD, designers achieve an optimized design cycle that shows reduction of iteration design steps from 20 in the Roskam approach to 13 in the AD approach, that will influence on the time and the cost of the design process.