Bio-inspired design and performance evaluation of a novel morphing nose cone for aerospace vehicles

变形 航空航天 运动学 机制(生物学) 空气动力学 航空航天工程 计算机科学 工程类 机械工程 模拟 人工智能 物理 经典力学 量子力学
作者
Xiangbing Wu,Zhenyu Wu,Lulu Liang,Jieliang Zhao,Wenzhong Wang,Shaoze Yan
出处
期刊:Aerospace Science and Technology [Elsevier]
卷期号:137: 108274-108274
标识
DOI:10.1016/j.ast.2023.108274
摘要

An effective way to improve the flight capability and environmental adaptability of aerospace vehicles is to design a morphing aircraft structure, which can actively change their aerodynamic shape. During different physiological activities, the abdomens of bees are regularly deformed to improve the efficiency of movement. This was used as an inspiration for the design of a nose cone for aerospace vehicles. Based on the deformation mechanism of the bee abdomen, a bionic design of a variable configuration morphing nose cone (MNC) mechanism with high sensitivity is proposed, which can realize real-time reverse self-locking of the mechanism via auxiliary branch chains. Theoretical models for the kinematics and dynamics of the MNC mechanism under two configurations are derived, verifying that the proposed mechanism has good kinematic and dynamic characteristics. The theoretical models are validated through simulation studies. In addition, static finite element simulations are performed to verify that the auxiliary locking branch chain can significantly improve the bearing capacity of the proposed mechanism. Moreover, the force and thermal parameters of different configurations of the MNC under corresponding typical working conditions are analyzed, enabling the improvement of the aerospace vehicle aerodynamic characteristics by the morphing of its nose cone. Finally, based on the analytic hierarchy process, different drag and heat flux reduction schemes are comprehensively evaluated.
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