Low Reynolds number aerodynamics of leading-edge and trailing-edge hinged control surfaces: Part I statics
Low Reynolds number aerodynamics of leading-edge and trailing-edge hinged control surfaces: Part I statics
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前缘和后缘铰接控制面的低雷诺数空气动力学：第一部分静力学
DOI：
10.1016/j.ast.2019.105563
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发表时间：
2020
影响因子：
5.6
通讯作者：
Watkins Simon
中科院分区：
文献类型：
--
作者：
Panta Ashim;Fisher Alex;Mohamed Abdulghani;Marino Matthew;Xu Ru;Liu Hao;Watkins Simon
本文研究了在阵风作用下，固定翼微型飞行器的控制效能的提高问题，并与传统的后缘铰接控制面进行了对比。静态和动态力被认为是在两个单独的文件（第一部分和第二部分）。在第一部分中，我们记录了两种平板翼型的静升力特性，它们具有30%弦长的前缘或后缘铰接操纵面，由迎角从0 °到30 °，操纵面偏转从0 °到±45 °时获得的表面压力测量值解析。带有前缘操纵面的翼型的升力响应是复杂的，在超过特定操纵面偏转时，升力会发生反转（例如，在α= 0 °时，CL反转超过θ =±20 °）。发现使用后缘操纵面比前缘操纵面更有效。对固定α和操纵面偏转时C P和C L波动的分析表明，前缘操纵面的波动明显小于后缘操纵面。此外，一个简单的势流模型在小迎角和操纵面偏转时，表现出与实验结果良好的CL相关性。
The use of a leading-edge hinged control surface, as opposed to a traditional trailing-edge hinged control surface, is investigated in the context of improving control authority of fixed-wing Micro Air Vehicles when subject to gusts. Static and dynamics forces are considered in two separate papers (Part I and II). In Part I we document the static lift characteristics of two flat-plate airfoils, having either a 30% chord leading-or trailing-edge hinged control surface, resolved from surface pressure measurements captured at angles of attack ranging from 0∘ to 30∘ and control surface deflections from 0∘ to±45∘. The lift response of the airfoil with the leading-edge control surface was complex with a reversal in lift noted beyond specific control surface deflections (for eg, at α= 0∘, C L reversed beyond ψ=±20∘). The use of a trailing-edge control surface was found to be more effective than the leading-edge control surface. Analysis of the C P and C L fluctuations at fixed α and control surface deflections revealed the fluctuations were significantly less with leading-edge control surfaces than trailing-edge control surfaces. Furthermore, a simple potential flow model exhibited good correlation of C L against experimental results at small angles of attack and control surface deflections.