Iterative BEMT analysis extended to model coaxial rotor aerodynamic performance in hover

IF 5 1区 工程技术 Q1 ENGINEERING, AEROSPACE Aerospace Science and Technology Pub Date : 2025-03-08 DOI:10.1016/j.ast.2025.110122
Ziqi Dai , Riul Jung , Michael J. Kingan , Digby Symons
{"title":"Iterative BEMT analysis extended to model coaxial rotor aerodynamic performance in hover","authors":"Ziqi Dai ,&nbsp;Riul Jung ,&nbsp;Michael J. Kingan ,&nbsp;Digby Symons","doi":"10.1016/j.ast.2025.110122","DOIUrl":null,"url":null,"abstract":"<div><div>This paper addresses the aerodynamic modelling of coaxial contra-rotating unmanned aerial vehicle (UAV) rotor blades in hover using a novel adapted blade element momentum theory (BEMT) model. The investigation incorporates numerical, computational, and experimental methods. The traditional BEMT approach is extended to iteratively solve for the axial velocities of both upper and lower rotors, accounting for mutual rotor-to-rotor interaction, rotor axial separation distance, and tip loss effects. Wake contraction is evaluated using a prescribed wake model. Computational fluid dynamics (CFD) simulations were implemented to conduct two-dimensional (2D) axisymmetric studies to validate the wake contraction model. Results from the new coaxial BEMT model were then compared to three-dimensional (3D) CFD results for a rotor pair. The BEMT predictions show strong alignment with CFD, accurately capturing both the wake contraction radius and the radial distributions of aerodynamic loads. The developed BEMT coaxial model was also validated against literature data published for different blade designs, showing strong agreement. Additionally, the BEMT results were compared with experimental measurements across various rotational speeds and showed good agreement. The study indicates that the developed coaxial BEMT model is effective in capturing the trends and magnitude of the performance of coaxial contra-rotating rotor blades at much lower set-up and computational costs than higher fidelity CFD calculations.</div></div>","PeriodicalId":50955,"journal":{"name":"Aerospace Science and Technology","volume":"161 ","pages":"Article 110122"},"PeriodicalIF":5.0000,"publicationDate":"2025-03-08","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/S1270963825001932","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

This paper addresses the aerodynamic modelling of coaxial contra-rotating unmanned aerial vehicle (UAV) rotor blades in hover using a novel adapted blade element momentum theory (BEMT) model. The investigation incorporates numerical, computational, and experimental methods. The traditional BEMT approach is extended to iteratively solve for the axial velocities of both upper and lower rotors, accounting for mutual rotor-to-rotor interaction, rotor axial separation distance, and tip loss effects. Wake contraction is evaluated using a prescribed wake model. Computational fluid dynamics (CFD) simulations were implemented to conduct two-dimensional (2D) axisymmetric studies to validate the wake contraction model. Results from the new coaxial BEMT model were then compared to three-dimensional (3D) CFD results for a rotor pair. The BEMT predictions show strong alignment with CFD, accurately capturing both the wake contraction radius and the radial distributions of aerodynamic loads. The developed BEMT coaxial model was also validated against literature data published for different blade designs, showing strong agreement. Additionally, the BEMT results were compared with experimental measurements across various rotational speeds and showed good agreement. The study indicates that the developed coaxial BEMT model is effective in capturing the trends and magnitude of the performance of coaxial contra-rotating rotor blades at much lower set-up and computational costs than higher fidelity CFD calculations.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
本文采用新颖的叶片元素动量理论(BEMT)模型,对悬停中的同轴反转无人机(UAV)旋翼叶片进行气动建模。研究结合了数值、计算和实验方法。对传统的 BEMT 方法进行了扩展,以迭代求解上下旋翼的轴向速度,同时考虑到旋翼间的相互影响、旋翼轴向分离距离和叶尖损失效应。使用规定的尾流模型对尾流收缩进行了评估。计算流体动力学(CFD)模拟进行了二维(2D)轴对称研究,以验证尾流收缩模型。然后将新同轴 BEMT 模型的结果与转子对的三维 CFD 结果进行比较。BEMT 预测结果与 CFD 非常吻合,准确捕捉到了尾流收缩半径和空气动力载荷的径向分布。开发的 BEMT 同轴模型还与不同叶片设计的文献数据进行了验证,结果显示两者非常吻合。此外,还将 BEMT 结果与不同转速下的实验测量结果进行了比较,结果显示两者吻合良好。研究表明,与保真度更高的 CFD 计算相比,所开发的同轴 BEMT 模型的设置和计算成本更低,能有效捕捉同轴反向旋转转子叶片的性能趋势和大小。
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 去求助
来源期刊
Aerospace Science and Technology
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.
期刊最新文献
A hybrid single-loop approach combining the target beta-hypersphere sampling and active learning Kriging for reliability-based design optimization Editorial Board Dynamic modeling of liquid-filled free-floating space robot and joint trajectory planning with considering liquid positioning Generalized Newton/Jacobian-free/Krylov iteration-based successive convexification for rapid trajectory optimization Iterative BEMT analysis extended to model coaxial rotor aerodynamic performance in hover
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1