منابع مشابه
Footprints of a flapping wing
Birds have to flap their wings to generate the needed thrust force, which powers them through the air. But how exactly do flapping wings create such force, and at what amplitude and frequency should they operate? These questions have been asked by many researchers. It turns out that much of the secret is hidden in the wake left behind the flapping wing. Exemplified by the study of Andersen et a...
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In the last decade, drones became frequently used to provide eye-in-the-sky overview in the outdoor environment. They are widely used for surveillance, mapping and exploring unknown terrains. Their main advantage compared to the other types of robots is that they can fly above obstacles and rough terrains and they can quickly cover large areas. These properties also open a new application; dron...
متن کاملPassive Wing Rotation in Flexible Flapping Wing Aerodynamics
Insect wings are flexible. For rigid wings lift enhancing unsteady aerodynamics mechanisms, such as delayed stall via leading-edge vortices (LEVs), wake-capture, and rotational forces, characterize the lift generation of a hovering insect. We have uncovered a novel mechanism that fruit fly size insects can utilize to further increase the lift by adjusting its wing shape passively: A pair of a L...
متن کاملControl of Flapping-Wing Micro Air Vehicles
Most birds and many insects use periodic wing motion to propel themselves and maneuver. Most conventional flying machines are propelled by rotating machinery, achieve lift through rotating or fixed wings, and are controlled through the production of steady aerodynamic forces produced by rotors or movable wings. Many of the first powered flapping-wing micro air vehicles (MAVs) effectively replac...
متن کاملFlapping wing aerodynamics: from insects to vertebrates.
More than a million insects and approximately 11,000 vertebrates utilize flapping wings to fly. However, flapping flight has only been studied in a few of these species, so many challenges remain in understanding this form of locomotion. Five key aerodynamic mechanisms have been identified for insect flight. Among these is the leading edge vortex, which is a convergent solution to avoid stall f...
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ژورنال
عنوان ژورنال: Science Robotics
سال: 2020
ISSN: 2470-9476
DOI: 10.1126/scirobotics.abd0233