Journal ArticleDOI
Bio-inspired design of flapping-wing micro air vehicles
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In this paper, the development and flight testing of flapping-wing propelled, radio-controlled micro air vehicles are described, which consist of a low aspect ratio fixed-wing with a trailing pair of higher aspect ratio flapping wings which flap in counterphase.Abstract:
In this paper the development and flight testing of flapping-wing propelled, radio-controlled micro air vehicles are described. The unconventional vehicles consist of a low aspect ratio fixed-wing with a trailing pair of higher aspect ratio flapping wings which flap in counterphase. The symmetric flapping-wing pair provides a mechanically and aerodynamically balanced platform, increases efficiency by emulating flight in ground effect, and suppresses stall over the main wing by entraining flow. The models weigh as little as 11g, with a 23cm span and 18cm length and will fly for about 20 minutes on a rechargeable battery. Stable flight at speeds between 2 and 5ms–1 has been demonstrated, and the models are essentially stall-proof while under power. The static-thrust figure of merit for the device is 60% higher than propellers with a similar scale and disk loading.read more
Citations
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Journal ArticleDOI
Classifications, applications, and design challenges of drones: A review
TL;DR: This review paper identifies a novel classification of flying drones that ranges from unmanned air vehicles to smart dusts at both ends of this spectrum, with their new defined applications.
Journal ArticleDOI
Flapping Wing Aerodynamics: Progress and Challenges
TL;DR: In this article, a review of recent developments in the understanding and prediction of flapping-wing aerodynamics is presented, with a special emphasis on the dependence of thrust, lift, and propulsive efficiency on flapping mode, amplitude, frequency, and wing shape.
Journal ArticleDOI
Wingbeat Shape Modulation for Flapping-Wing Micro-Air-Vehicle Control During Hover
TL;DR: In this article, a split-cycle constant-period frequency modulation (CDFM) was used to control a flapping-wing micro air vehicle by varying the velocity profiles of the wing strokes.
BookDOI
Flying insects and robots
TL;DR: This book examines all aspects of the mechanics, technology and intelligence of insects and insectoids and focuses on the development of autonomous flying systems using biological principles to sense their surroundings and autonomously navigate.
Journal ArticleDOI
Direct measurement of thrust and efficiency of an airfoil undergoing pure pitching
TL;DR: In this article, the thrust and propulsive efficiency of a NACA 0012 airfoil undergoing oscillating pitching motion at a Reynolds number of 2 was investigated using a pair of force transducers to measure fluid forces directly.
References
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Fixed and Flapping Wing Aerodynamics for Micro Air Vehicle Applications
TL;DR: In this article, the authors present the progress made by over 50 active researchers in the field from Canada, Europe, Japan, and the United States in the area of aerodynamic efficiency of various fixed-wing, flapping wing, and rotary wing concepts.
Journal ArticleDOI
Experimental and Computational Investigation of the Knoller-Betz Effect
TL;DR: In this article, the ability of a sinusoidally plunging airfoil to produce thrust, known as the Knoller-Betz or Katzmayr effect, was investigated experimentally and numerically.
Journal ArticleDOI
Compressibility effects on dynamic stall
TL;DR: In this article, the effect of compressibility on dynamic stall behavior has been comprehensively studied, including a review of work performed on both aircraft and helicopters, and offers insight into the impact of compressible airfoils on the complex aerodynamic phenomenon known as dynamic stall.
Journal ArticleDOI
Energy requirements for the flight of micro air vehicles
TL;DR: In this paper, the authors describe power requirements for micro air vehicles, flying in the Reynolds number regime of similar to 10(5), and three flight modes have been researched: fixed wing, rotary wing and flapping wing.