Vortex behavior over a tailless forward-swept wing with chine forebody configuration

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-10-03 DOI:10.1016/j.ast.2025.111026

Eiman B. Saheby, Li Jialu, Chen Wang, Shen Xing

{"title":"Vortex behavior over a tailless forward-swept wing with chine forebody configuration","authors":"Eiman B. Saheby, Li Jialu, Chen Wang, Shen Xing","doi":"10.1016/j.ast.2025.111026","DOIUrl":null,"url":null,"abstract":"<div><div>The aim of this study is to investigate the necessity of a swing-wing system to maximize the aerodynamic efficiency of an unconventional tailless VTOL platform. This is accomplished by comparing the aerodynamics of two different wing configurations mounted on an identical fuselage with a chine forebody, using both wind tunnel tests and numerical simulations. To assess and compare lift, drag, and the behavior of vortical flow structures in cruise mode, two subscale models were designed: one featuring a straight leading-edge wing representative of the cruise configuration in a variable-sweep design, and the other with a fixed 58-degree forward-swept wing representing a non-variable fixed-wing solution. Wind tunnel experiments included force measurements and particle image velocimetry at a Reynolds number of 1.706 × 10<sup>5</sup>. The results reveal substantial differences not only in lift-to-drag characteristics but also in the behavior of vortical patterns on the aft-body, driven by interactions between the chine vortices and wing-generated turbulence. These interactions produce distinctly different flow structures, including oscillating vortex cores and varying breakdown patterns. Details regarding post-processing and data quantification are presented in this paper.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"168 ","pages":"Article 111026"},"PeriodicalIF":5.8000,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aerospace Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1270963825010892","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}

引用次数: 0

Abstract

The aim of this study is to investigate the necessity of a swing-wing system to maximize the aerodynamic efficiency of an unconventional tailless VTOL platform. This is accomplished by comparing the aerodynamics of two different wing configurations mounted on an identical fuselage with a chine forebody, using both wind tunnel tests and numerical simulations. To assess and compare lift, drag, and the behavior of vortical flow structures in cruise mode, two subscale models were designed: one featuring a straight leading-edge wing representative of the cruise configuration in a variable-sweep design, and the other with a fixed 58-degree forward-swept wing representing a non-variable fixed-wing solution. Wind tunnel experiments included force measurements and particle image velocimetry at a Reynolds number of 1.706 × 10⁵. The results reveal substantial differences not only in lift-to-drag characteristics but also in the behavior of vortical patterns on the aft-body, driven by interactions between the chine vortices and wing-generated turbulence. These interactions produce distinctly different flow structures, including oscillating vortex cores and varying breakdown patterns. Details regarding post-processing and data quantification are presented in this paper.

查看原文本刊更多论文

中国前体结构无尾前掠机翼上的涡旋特性

本研究的目的是探讨摆翼系统的必要性，以最大限度地提高非常规无尾垂直起降平台的气动效率。这是通过使用风洞试验和数值模拟来比较安装在具有中国前体的同一机身上的两种不同机翼配置的空气动力学来实现的。为了评估和比较巡航模式下的升力、阻力和涡流结构的行为，设计了两个亚尺度模型：一个具有代表可变后掠设计的巡航配置的直前缘机翼，另一个具有代表非可变固定翼解决方案的固定58度前掠机翼。风洞实验包括雷诺数为1.706 × 105的力测量和粒子图像测速。结果表明，由于涡旋和机翼产生的湍流之间的相互作用，不仅在升阻特性上存在显著差异，而且后机身上的涡旋模式行为也存在显著差异。这些相互作用产生了明显不同的流动结构，包括振荡涡核和不同的击穿模式。本文详细介绍了后处理和数据量化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.