航空学报 > 2025, Vol. 46 Issue (14): 231026-231026   doi: 10.7527/S1000-6893.2025.31026

固体力学与飞行器总体设计

翼尖铰接组合式飞行器多飞行构型下协调机动操纵性分析

朱恩桐1,2, 周洲1,2, 王睿1,2(), 王涵1,2, 王贵晨1,2   

  1. 1.西北工业大学 航空学院,西安 710072
    2.飞行器基础布局全国重点实验室,西安 710072
  • 收稿日期:2024-08-02 修回日期:2024-09-20 接受日期:2025-01-10 出版日期:2025-02-06 发布日期:2025-02-06
  • 通讯作者: 王睿 E-mail:wangrui@nwpu.edu.cn
  • 基金资助:
    陕西省自然科学基础研究计划(2023-JC-YB-010)

Coordinated maneuverability analysis of wingtip-docking compound aircraft in multiple flight configurations

Entong ZHU1,2, Zhou ZHOU1,2, Rui WANG1,2(), Han WANG1,2, Guichen WANG1,2   

  1. 1.School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China
    2.National Key Laboratory of Basic Layout of Aerospace Vehicles,Xi’an 710072,China
  • Received:2024-08-02 Revised:2024-09-20 Accepted:2025-01-10 Online:2025-02-06 Published:2025-02-06
  • Contact: Rui WANG E-mail:wangrui@nwpu.edu.cn
  • Supported by:
    Natural Science Basic Research Program of Shannxi(2023-JC-YB-010)

摘要:

为研究组合式飞行器协调机动操纵能力,从连接数量和飞行构型2个角度出发探索了组合式飞行器的机动能力变化问题。首先采用CFD方法建立组合体飞行器气动力数据库,导入采用准坐标形式的拉格朗日多体动力学关系得到翼尖铰接链式组合飞行器动力学模型并在各类代表性构型下求解配平问题。然后提出姿态等效体和三轴等效加速度的定义并说明其描述组合体飞行器操纵性的合理性。最后构建最优化问题,在避免诱发相对运动的约束下计算2/3/4/5机组合体,各自在3类飞行构型(水平构型、上下反构型、手风琴构型)下分别计算纵向、横向、航向三轴最大可达加速度。从本质上,构型变化改变惯量分布矩阵和操纵效能矩阵从而影响操纵性能;体数增加影响飞行器展向尺度和相对运动自由度,在避免诱发相对运动的约束下影响执行机构最大可用操纵量。所得到的操纵性结论能为组合式飞行器飞行构型选择和控制方案设计提供理论依据。

关键词: 飞行力学, 组合式飞行器, 操纵性, 变构型飞行器, 可达集, 最优化

Abstract:

To study the coordinated maneuverability of the wingtip-docking compound aircraft, this paper explores the changes in maneuverability from the perspectives of unit aircraft connection number and configuration. A Computational Fluid Dynamics (CFD) method is used to establish an aerodynamic database for the compound aircraft. This data is then employed to develop a dynamic model of the wingtip-hinged chain-like combined aircraft, based on a quasi-coordinate form of the Lagrange multi-body dynamics. The control inputs required for trimming in various configurations have been calculated. Next, the concept of an attitude equivalent body is proposed and its reasonableness as a reference standard for maneuverability explained. Finally, an optimization problem is constructed to evaluate the maximum attainable equivalent acceleration in the longitudinal, lateral, and yaw axes for combinations consisting of 2/3/4/5 unit aircraft in three configurations. The study identifies characteristic changes, explains the reasons, and provides a theoretical basis for configuration selection and control law design.

Key words: flight mechanics, compound aircraft, maneuverability, reconfigurable aircraft, reachable set, optimization

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