The world's first successful flight of a self-powered, rudderless, flapping aircraft has been achieved. The NAV, or nano air vehicle, operates by using two flapping wings.

The system places a large number of flapping wings inside a series of precisely shaped ducts. The wings are driven by cams on a rotating shaft, such that they flap back and forth quickly between ...

The AlbatrossONE, a model based on the A321, is constructed from carbon-fiber and glass-fiber-reinforced polymers and has “semi-aeroelastic” hinged wing-tips. The freely flapping wingtips ...

Incredibly, the birds spent just 1% of their time aloft flapping their wings, mostly during take-off. One bird flew more than five hours, covering more than 100 miles, without flapping its wings.

In ESPN The Magazine's One Day One Game Issue, Chris Jones writes that true to the Featherhood, the Saint Joseph's hawk went down flapping in their OT loss the first weekend of the NCAA tournament.

The flapping technology, for instance, might be scaled up to propel ships. And if fins were put on the side of a ship they could extract energy from its rolling motion and use that to help drive a ...

A newly published study notes that Andean condors are able to fly more than 100 miles without flapping their wings once. The research, published in Proceedings of the National Academy of Sciences ...

Previous researchers also have suggested that Archaeopteryx ’s plumage was too delicate and might have snapped with vigorous flapping (SN: 6/5/10, p. 12).

Airbus initially trialed ground-based tests throughout 2019 and completed the small-scale, wing-flapping aircraft's first test flight in late July of 2019 on a scaled-down Airbus A321.

Robotic Avian Wing Explains Aerodynamic Advantages of Wing Folding and Stroke Tilting in Flapping Flight. Advanced Intelligent Systems, 2022; 2200148 DOI: 10.1002/aisy.202200148 ...

At 33 pounds, Andean condors are the heaviest soaring birds on Earth, but a new study finds they can stay airborne for up to five hours at a time without flapping at all. Facundo Vital In the high ...