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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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Numerical investigation on the aerodynamic gliding performance of an ornithopter

TL;DR: In this paper, the aerodynamic performance and the laminar separation of the flow are investigated at gliding flight conditions using computational fluid dynamic turbulent models, and three different turbulent models were applied on three different wings in similar flight conditions.
Proceedings ArticleDOI

Theoretical Investigation of the Aerodynamics of Membrane MAV Wings with Cambered Frames

TL;DR: In this paper, lifting-line theory was used to perform a theoretical analysis on the time-averaged shapes for the membrane wings of flexible membrane MAV wings with cambered frames, and it was determined that lifting line theory approximates the lift coefficients reasonably well despite the assumptions of inviscid, attached flow.
Posted Content

Potential of electrostatic micro wind turbines

TL;DR: In this paper, the physical operating principles of several micro wind turbines based on different aerodynamic forces are presented, such as drag-type Vertical Axis Wind Turbine (VAWT) and lift-type Horizontal Axis wind turbine (HAWT), which share the similarity of exploiting the same mechanical-to-electrical conversion: electrostatic conversion.
Journal ArticleDOI

On the Use of Cambered Plate Airfoils for Small Wind Turbines

TL;DR: In this article, the use of constant thickness, cambered plates is explored as a means to reduce the cost of rotors for small wind turbines, and an operational turbine with a 3 m rotor was developed and is currently being tested.
Proceedings ArticleDOI

Passive control of self-induced roll oscillations using bleed

TL;DR: In this paper, a passive flow control method, which uses bleed from a slot near the wing tip, has been shown to attenuate self-excited roll oscillations of a low aspect ratio (AR = 2) rectangular flat-plate wing.
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.