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Open AccessJournal ArticleDOI

Low Reynolds Number Aerodynamics of Low-Aspect-Ratio, Thin/Flat/Cambered-Plate Wings

Alain Pelletier, +1 more
- 01 Sep 2000 - 
- Vol. 37, Iss: 5, pp 825-832
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TLDR
In this paper, the authors measured the lift, drag, and pitching moment about the quarter chord on a series of thin flat plates and cambered plates at chord Reynolds numbers varying between 60,000 and 200,000.
Abstract
The design of micro aerial vehicles requires a better understanding of the aerodynamics of small low-aspect-ratio wings An experimental investigation has focused on measuring the lift, drag, and pitching moment about the quarter chord on a series of thin flat plates and cambered plates at chord Reynolds numbers varying between 60,000 and 200,000 Results show that the cambered plates offer better aerodynamic characteristics and performance It also appears that the trailing-edge geometry of the wings and the turbulence intensity in the wind tunnel do not have a strong effect on the lift and drag for thin wings at low Reynolds numbers Moreover, the results did not show the presence of any hysteresis, which is usually observed with thick airfoils/wings

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Citations
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Journal ArticleDOI

Effect of the angle of attack on the transient lift during the interaction of a vortex with a flat plate. Potential theory and experimental results

TL;DR: In this paper, the potential flow theory was used to analyze the dynamics of a two-dimensional vortex interacting with a flat plate at different angles of attack α, and it was found that the potential theory predicts reasonably well the transient fluctuation in the lift force provided that the separation distance is not too close to the critical one h ∗ ∕ c at which the vortex trajectory given by the potential theories bifurcates.
Dissertation

Aerodynamics of flexible membranes

TL;DR: In this paper, the effect of pre-strain and excess length on the aerodynamic properties of flexible membrane aerofoil was investigated for both rectangular and nonslender delta wings.
Journal ArticleDOI

Theoretical Prediction of Roll Moment Due to Sideslip for Thin Low-Aspect-Ratio Wings

TL;DR: In this article, the physics associated with leading-edge flow reattachment and tip vortex roll-up in crossflow are incorporated into a simple theory that enables the improved prediction of the lateral static stabi...
Dissertation

Design, optimization and flight testing of a micro air vehicle

TL;DR: In this paper, the development of a method for rapid design and optimization based on some basic preliminary design parameters is described, which is based on low aspect ratio (LAR) wing theory and experimental data by Mueller and Torres have been used to analytically predict the performance of the MAV.
Journal ArticleDOI

Can Scalable Design of Wings for Flapping Wing Micro Air Vehicle Be Inspired by Natural Flyers

TL;DR: Through geometric similarity study and statistical analysis, the results show that the aspect ratio and lumped parameter are independent on mass, and the lumped parameters and aspect ratio of flapping wing MAVs correspond to the range of wing performances of natural flyers.
References
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Book

Fundamentals of Aerodynamics

TL;DR: In this article, Navier-Stokes et al. discuss the fundamental principles of Inviscid, Incompressible Flow over airfoils and their application in nonlinear Supersonic Flow.
Book

Low-Speed Wind Tunnel Testing

William H. Rae, +1 more
TL;DR: The use of wind tunnel data for aerodynamic experiments has been studied in this article, where three dimensions of three-dimensional flow and pressure, flow, and shear stress measurements are used to calibrate the test section.
Journal ArticleDOI

Wind tunnel tests of wings at Reynolds numbers below 70 000

TL;DR: In this article, a planform wing was tested at Reynolds numbers as low as 20 000 in a low turbulence wind tunnel and the best profile was a thin plate with a 5% circular arc camber.