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The Flytech Dragonfly is a remote-controlled flying toy manufactured by WowWee. The Dragonfly has been incorrectly billed as the world's first commercially available RC ornithopter (flapping wing aircraft). [citation needed] It was actually preceded by several other products, including Hobbytechnik's Skybird, Park Hawk, and Slow Hawk radio ...
Ornithopter. Pteryx Skybird radio-controlled ornithopter. An ornithopter (from Greek ornis, ornith- 'bird' and pteron 'wing') is an aircraft that flies by flapping its wings. Designers sought to imitate the flapping-wing flight of birds, bats, and insects. Though machines may differ in form, they are usually built on the same scale as flying ...
Vultur pratruus Emslie, 1988 (lapsus) The Andean condor (Vultur gryphus) is a South American New World vulture and is the only member of the genus Vultur. It is found in the Andes mountains and adjacent Pacific coasts of western South America. With a maximum wingspan of 3.3 m (10 ft 10 in) and weight of 15 kg (33 lb), the Andean condor is one ...
Bird flight. A flock of domestic pigeons each in a different phase of its flap. Bird flight is the primary mode of locomotion used by most bird species in which birds take off and fly. Flight assists birds with feeding, breeding, avoiding predators, and migrating. Bird flight includes multiple types of motion, including hovering, taking off ...
The artificial hummingbird maneuvers using its flapping wings for propulsion and attitude control. It has a body shaped like a real hummingbird, a wingspan of 6.3 inches (160 mm), and a total flying weight of 0.67 ounces (19 g)—less than an AA battery .
Identification of major forces is critical to understanding insect flight. The first attempts to understand flapping wings assumed a quasi-steady state. This means that the air flow over the wing at any given time was assumed to be the same as how the flow would be over a non-flapping, steady-state wing at the same angle of attack.
This bird is a juvenile, lacking the brightly coloured bill of the adult. The kagu is a ground-living bird, 55 cm (21⁄ in) in length. The weight can vary considerably by individual and by season, ranging from 700 to 1,100 g (25–39 oz). Its plumage is unusually bright for a bird of the forest floor; ash-grey and white coloured.
During its slow flapping flight, the southern lapwing shows a broad white wing bar separating the grey-brown of the back and wing coverts from the black flight feathers. The rump is white and the tail black. The call is a very loud and harsh keek-keek-keek. There are three or four subspecies, differing slightly in head coloration and voice.