Review:Recent Developments in the Uncertainty-Based Aero-Structural Design Optimization for Aerospace Vehicles

With the increasing demands of aircraft design, the traditional deterministic design can hardly meet the requirements of fine design optimization because uncertainties may exist throughout the whole lifecycle of the aircraft. To enhance the robustness and reliability of the aircraft design, Uncertainty Multidisciplinary Design Optimization (UMDO) has been developing for a long time. This paper presents a comprehensive review of UMDO methods for aerospace vehicles, including basic UMDO theory and research progress of its application in aerospace vehicle design. Firstly, the UMDO theory is preliminarily introduced, with giving the definition and classification of uncertainty as well as its sources corresponding to the aircraft design. Then following the UMDO solving process, the application in different coupled disciplines is separately discussed during the aircraft design process, specifically clarifying the UMDO methods for aero-structural optimization. Finally, the main challenges of UMDO and the future research trends are given.