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31 July 2019
31. July 2019 Innovation

The albatross is inspiring tomorrow’s aircraft wings

The “semi-aeroelastic hinge” wing concept of Airbus’ AlbatrossOne could help reduce drag and combat the effects of turbulence

AlbatrossOne

The albatross sea bird can soar hundreds of kilometres without flapping its wings. Imitating this flight technique just might help engineers design lighter and more fuel-efficient aircraft. 

Of all feathered creatures, the albatross enjoys a legendary status. To bird enthusiasts, it is a majestic animal with the largest wingspan of any living bird. To golfers, it is a score of three-under-par on a single hole. To poetry majors, it is a centuries-old metaphor for a curse or burden. And to many engineers, the albatross is synonymous with the next generation of aircraft wings.

It is not hard to see why the albatross has captured the imagination of engineers: this remarkable sea bird can soar for several hundred kilometres—without flapping its wings! No other bird or winged creature is capable of doing the same. The secret of the albatross’ flight techniques lies in its capacity to “lock” its wing at the shoulder when travelling over long distances. In fact, the albatross can spend up to half of its time facing the wind and using it to fly upward on long trips, thereby covering long distances with very little effort. On the other hand, when faced with wind gusts, the albatross can quickly unlock its wings to better navigate the sudden, brief increase in wind speed.

 

 

AlbatrossOne is the first aircraft to trial in-flight, freely flapping wing-tips—which account for up to a third of the length of the wing.

Tom Wilson, Airbus engineer, Filton, UK

AlbatrossOne: Revolutionising Aircraft Wing Design

 

Inspired by the albatross seabird, Airbus engineers in Filton, UK have developed a remote-controlled aircraft demonstrator that has semi-aeroelastic hinged wing-tips. It is the first aircraft demonstrator to trial in-flight, freely flapping wing-tips that can react and flex to wind gusts, thereby significantly reducing load and drag for a lighter, more fuel-efficient aircraft. Read less Read more

Semi-aeroelastic hinged wing-tips for greater efficiency

Taking inspiration from the albatross, Airbus engineers in Filton, UK, with the support of Airbus ProtoSpace, have developed AlbatrossOne, a small-scale, remote-controlled aircraft demonstrator that has “semi-aeroelastic” hinged wing-tips. “The concept of hinged wing-tips is not new,” explains Airbus engineer Tom Wilson. “Military jets employ them to allow greater storage capacity on aircraft carriers. However, AlbatrossOne is the first aircraft to trial in-flight, freely flapping wing-tips—which account for up to a third of the length of the wing.”

In comparison to freely flapping wing-tips, a conventional wing on an aircraft transmits huge loads to the fuselage during turbulence. This requires the base of the wing to be heavily strengthened, thus adding weight to the aircraft as a result of the heavily reinforced wing boxes. By allowing the wing-tips to react and flex to wind gusts, load is significantly reduced. At the same time, the technique can reduce drag and combat the effects of turbulence and wind gusts.

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Innovation 31 July 2019

The albatross is inspiring next generation of aircraft wings

A shy albatross flying over the pacific ocean off the coast of Tasmania.

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Innovation 26 February 2019

AlbatrossOne

Airbus engineers have developed a scale-model aeroplane with the first in-flight, flapping wing-tips that could revolutionise aircraft wing-design.

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Innovation 31 July 2019

The albatross is inspiring next generation of aircraft wings

"A Waved Albatross (Phoebastria irrorata) flying over Espanola, The Galapagos, Ecuador"

Inspiration from nature to revolutionise aircraft wing design

Revolutionising aircraft wing design is one of the objectives of AlbatrossOne—a project that draws on inspiration from the albatross’ flight techniques. The demonstrator aircraft, which is a small-scale version based on the A321 aircraft, is constructed from carbon-fibre and glass-fibre-reinforced polymers, as well as components from additive manufacturing.

The first flight tests were concluded in February after a 20-month development programme. The next step for AlbatrossOne is to conduct further flight tests that combine the two flight modes, enabling the wing-tips to unlock during flight and to examine the transition.

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