The locking mechanism of the landing gear is crucial for ensuring stable load-bearing capability in the deployed position. However, the locking mechanism’s performance is subject to more stringent requirements due to the high landing loads of modern aircraft. Currently, the locking mechanism’s operational principles are not well understood which makes the design of a high-performance locking mechanism a challenging problem. To address these issues, an analysis and optimization design method is proposed to study the locking performance of the locking mechanism using singularity theory combined with numerical continuation method. Firstly, taking the self-folding strut locking mechanism of the main landing gear of unmanned aerial vehicles as the research object, the influence of different singular positions of the landing gear on the locking performance is analyzed. The critical unlocking condition is obtained. Furthermore, the load-carrying ratio is defined as the indicator of locking performance. Finally, a comprehensive optimization model with locking performance as the optimization objective is established. The optimization results demonstrate a significant improvement in the critical unlocking load. The study demonstrates that singularity analysis combined with numerical continuation method can effectively capture the variation trends of locking performance with different structural parameters, and the proposed optimization method can provide effective support for the design of landing gear locking mechanisms.


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    Title :

    Analysis and Optimization Design of the Locking Performance of the Self-folding Strut Lock Mechanism for Landing Gear Based on Singularity Theory


    Additional title:

    Springer Aerospace Techn.


    Contributors:
    Liu, Zishun (editor) / Li, Renfu (editor) / He, Xiaodong (editor) / Zhu, Zhenghong (editor) / Zhang, Zhipeng (author) / Yin, Yin (author) / Wu, Shengxiao (author) / Li, Yangyang (author) / Wei, Xiaohui (author) / Nie, Hong (author)

    Conference:

    International Conference on Advanced Unmanned Aerial Systems ; 2023 ; Harbin, China July 14, 2023 - July 16, 2023



    Publication date :

    2024-02-01


    Size :

    10 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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