外翼可变后掠角折叠翼的扑翼特性研究

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2024-10-24 DOI:10.1016/j.ast.2024.109685

Jin-Gang Wang, Xiang-Ying Guo

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引用次数: 0

摘要

针对基于传统设计的可变机翼配置，对折叠翼飞机的临界扑翼速度以及相关稳定性和安全性进行了评估。通过理论分析和数值模拟验证，详细研究了铰链刚度、后掠角和折叠角等参数对折叠翼扑翼和稳定性的影响。结果表明，在指定的安全铰链刚度下，所提出的可变扫掠折叠翼构型可以提高危险折叠角下的临界扑翼速度。通过联合操纵折叠角和扫掠角，折叠翼的气动阻力得以降低，从而提高了其飞行速度和扑翼边界。本文旨在为变翼构型的设计和稳定性分析提供新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research on the flutter characteristics of folding wings with variable swept angles of the outer wing

The critical flutter speed, along with the associated stability and safety of a folding-wing aircraft, has been evaluated for variable wing configurations based on traditional designs. Through theoretical analysis and numerical simulation validation, the contributions of parameters such as the hinge stiffness, sweep angle, and folding angle on the flutter and stability of the folding wing are investigated in detail. It is observed that under a specified safe hinge stiffness, the proposed variable-sweep folding-wing configuration can enhance the critical flutter speed at a dangerous folding angle. Through the joint manipulation of the folding and sweep angles, the aerodynamic drag of the folding wing was reduced, thereby enhancing its flight speed and flutter boundaries. This paper aims to provide novel insights into the design and stability analysis of variable-wing configurations.

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.