Given the requirement of evaluating the performance of eVTOL aircraft in low-speed phase, our research proposes a Maneuverability Analysis Method based on Temporal-Spatial Reachable Set. To do this, a closed-loop solution of optimal low-speed maneuver is formulated using the motion primitive in optimal control theory. With numerical optimization tools, the quantitative analysis of eVTOL maneuverability during vertical takeoff and landing, be it from all-engine-operative to one-engine-inoperative, are realized with high precision. The proposed method is further extended to include a bi-level optimization scheme, which facilitates eVTOL parameter optimization during early phase of conceptual design. The proposed method is applied to a lift+cruise eVTOL, with its low-speed maneuverability increased by 23.1%.
Publications
Wang M., Chu N., Bhardwaj P., Zhang S.*, Holzapfel F. Minimum-time Trajectory Generation of eVTOL in Transition Phase: Application in Control Law Design. IEEE Transactions on Aerospace and Electronic Systems, 2023, 59(2):1260-1275（SCI，JCR Q1，doi.org/10.1109/TAES.2022.3198033）
Wang M., Sun H.*, Zhang S. Reentry Blackout Reachable Set Footprint Prediction Using Multi-Phase Trajectory Optimization[J]. Advances in Space Research, 2023，72: 1970–1982(SCI，JCR Q1，doi.org/10.1016/j.asr.2023.05.034)
Wang M., Diepolder J., Zhang S.*, Soepper M., Holzapfel F. Trajectory Optimization-Based Maneuverability Assessment of eVTOL Aircraft. Aerospace Science and Technology, 2021, 117:1-20（SCI，JCR Q1，doi.org/10.1016/j.ast.2021.106903）
