Experimental Study of the Aerodynamic Performance and Flow Characteristics of an Integrated UAV Inlet with Double 90° Bends

IF 2.1 3区工程技术 Q2 ENGINEERING, AEROSPACE

Aerospace Pub Date : 2024-07-21 DOI:10.3390/aerospace11070593

Jiahao Ren, Zhenlong Wu, Huijun Tan, Ziyun Wang, Xiaoming He, Dongpo Li, Yi Zhou

引用次数: 0

Abstract

Many UAVs today have an S-bend inlet for the sake of stealth; however, the majority of them have a relatively gentle transition of the flow channel. This study presents an experimental investigation of the aerodynamic performance and swirl flow characteristics of a UAV inlet with double 90° bends, which is also integrated with an aircraft fuselage as well as a volute. The influences of angle of attack, sideslip angle, AIP Mach number and freestream speed are explored in detail. The influences of the deflectors installed ahead of the first 90° bend of the inlet and the baffle installed at the bottom of the volute are revealed. It is found that both the deflectors and the baffle are beneficial in enhancing the aerodynamic performance of the inlet and alleviating the intensity of the swirl flow inside the volute.

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带有双 90° 弯道的一体化无人机进气口的空气动力性能和流动特性实验研究

目前，许多无人机为了隐形都采用了 S 形弯曲进气口，但其中大多数的流道过渡相对平缓。本研究对带有双 90° 弯道的无人机进气口的气动性能和漩涡流特性进行了实验研究。详细探讨了攻角、侧倾角、AIP 马赫数和自由流速度的影响。研究还揭示了安装在进气口第一个 90° 弯道前的导流板和安装在涡道底部的挡板的影响。研究发现，导流板和挡板都有利于提高进气口的空气动力性能，减轻涡道内漩涡流的强度。

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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来源期刊

Aerospace ENGINEERING, AEROSPACE-

CiteScore

3.40

自引率

23.10%

发文量

661

审稿时长

6 weeks

期刊介绍： Aerospace is a multidisciplinary science inviting submissions on, but not limited to, the following subject areas: aerodynamics computational fluid dynamics fluid-structure interaction flight mechanics plasmas research instrumentation test facilities environment material science structural analysis thermophysics and heat transfer thermal-structure interaction aeroacoustics optics electromagnetism and radar propulsion power generation and conversion fuels and propellants combustion multidisciplinary design optimization software engineering data analysis signal and image processing artificial intelligence aerospace vehicles'' operation, control and maintenance risk and reliability human factors human-automation interaction airline operations and management air traffic management airport design meteorology space exploration multi-physics interaction.