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Geometry and Prestrain Effects on the Aerodynamic Characteristics of Batten-Reinforced Membrane Wings

Zhang, Zheng and Martin, Nathan and Wrist, Andrew and Hubner, James P. (2016) Geometry and Prestrain Effects on the Aerodynamic Characteristics of Batten-Reinforced Membrane Wings. Journal of Aircraft, 53 (2). pp. 530-544. ISSN 0021-8669 . http://resolver.caltech.edu/CaltechAUTHORS:20160509-083843624

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Abstract

To lessen the deterioration of fixed-wing aerodynamic performance associated with chord Reynolds numbers below 100,000, flexible membrane wing designs have been studied and proposed as an alternative for micro air vehicle use. The beneficial effects of a flexible membrane can include higher lift, steeper lift-curve slope, delayed stall, gentle stall characteristics, and greater efficiency. These benefits have been attributed to both the time-averaged and dynamic deformation of the membrane. This work discusses the geometric and prestrain effects on a batten-reinforced, free trailing-edge membrane wing in low-Reynolds-number (50,000) flow. The global aerodynamic forces on the wings with varying wing aspect ratio, cell aspect ratio, and prestrain level were measured. The results show that the aerodynamic advantages of the flexible membrane are retained for the low-aspect-ratio wings. The optimal membrane cell aspect ratio is found to be approximately 1. The comparison of the aerodynamic forces between the low-aspect-ratio membrane wings and the corresponding three-dimensional-printed wings with the time-averaged deformation indicates the importance of membrane dynamic motion for the derived aerodynamic benefits.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.2514/1.C033386DOIArticle
http://arc.aiaa.org/doi/10.2514/1.C033386PublisherArticle
Additional Information:© 2015 by the American Institute of Aeronautics and Astronautics, Inc. Publication Date (online): August 13, 2015.
Record Number:CaltechAUTHORS:20160509-083843624
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160509-083843624
Official Citation:Zheng Zhang, Nathan Martin, Andrew Wrist, and James P. Hubner. "Geometry and Prestrain Effects on the Aerodynamic Characteristics of Batten-Reinforced Membrane Wings", Journal of Aircraft, Vol. 53, No. 2 (2016), pp. 530-544. doi: 10.2514/1.C033386
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66727
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 May 2016 17:19
Last Modified:09 May 2016 17:19

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