Experimental Assessment of the Poststall Performance of Two Highly Cambered Airfoils

Author:

Emmerson Beau1ORCID,Verstraete Dries1ORCID

Affiliation:

1. University of Sydney, Sydney, New South Wales 2006, Australia

Abstract

Poststall aerodynamic data are required to design and validate propellers, rotors, and wind turbines. However, these data are scarce for (highly) cambered airfoils. This study provides poststall aerodynamic data for the E387 and the FX 63-137 airfoils, and it generates insight into the effect of airfoil camber on poststall aerodynamic behavior. Experimental lift, drag, and moment coefficients are presented for Reynolds numbers between 100,000 and 200,000 at angles of attack from [Formula: see text] to 180 deg. Prestall performance is validated for the FX 63-137 airfoil, where hysteresis around stall is evident. Comparisons between the two airfoils and published results are made. The FX 63-137 produces a maximum poststall lift coefficient of 1.31 and a drag coefficient at 90 deg of 2.03, whereas the E387 generates values of 1.18 and 1.99, respectively. A geometric relationship is formulated to indicate if an airfoil should have a coefficient of drag larger than a flat plate at 90 deg, and it is found that the FX 63-137 is the only two-dimensional airfoil experimentally tested that conforms to this relationship.

Publisher

American Institute of Aeronautics and Astronautics (AIAA)

Subject

Aerospace Engineering

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3