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On the Record with
PAT HASSEY, CHAIRMAN, ALCOA'S AEROSPACE MARKET SECTOR LEAD TEAM

A380 Puts Aluminum in Spotlight

Alcoa is competing head-to-head with Pechiney of France to provide materials and components for the Airbus A380 wing and fuselage structures. As such, most of its aerospace R&D budget is currently devoted to developing new technologies and alloys for the giant airliner.

"It is a major challenge to light-weight the plane," Alcoa executive VP Pat Hassey told Show News. "We are offering our latest generation of materials."

Among them: aluminum honeycomb, and such upper fuselage skin materials as GLARE glass fiber-reinforced panels made with very thin alternating skins of S-2 fiberglass and aluminum. GLARE panels are 25% lighter than aluminum panels, are highly resistant to fatigue and cracking, and cost less than carbon composites. In the lower lobe of the fuselage, Airbus will use continuous laser welding to join the stringers to the skins, eliminating fasteners and providing an inherently corrosion-resistant structure.

The A380 fuselage will make the most extensive use in commercial aviation of different aluminum alloys for different parts of the fuselage, Hassey says.

He has already begun thinking about the Boeing Sonic Cruiser, he says, which will also require new technology to keep its weight as low as possible.

For Alcoa, Le Bourget is a coming-out party. The previously "stealth" exhibitor (its booth was closed to the public) is throwing wide its doors and staging its biggest-ever presence at the Paris Air Show.

No longer content with a quiet "yes, well, airplanes are built of aluminum," Alcoa is trumpeting the technical aspects of its latest alloys. It is also celebrating a far larger aerospace business than ever before after a series of multi-billion dollar acquisitions last year brought Reynolds Metals, Howmet Castings and Huck fasteners under its wing.

"Now we're on the wheels, brakes, landing gear, the fuselage keel, stringers and skin, and wing skins and structure," says Pat Hassey, executive VP at Alcoa and chairman of its aerospace market sector lead team. "With Howmet we're into propulsion with castings on almost every engine, then with Huck fasteners we hold everything together."

Aerospace makes up the largest single business in Alcoa's transportation sector, which itself accounted for $5 billion of last year's company-wide $23 billion in sales.

"We want to showcase our products and our engineering," Hassey told Show News. "We are attaching such importance to Paris that Alcoa CEO Alain Belda will be visiting on Tuesday-the first time our chief executive has been here for many years."

Alcoa is looking to increase its aerospace sector activity as part its corporate growth strategy. One example of the company's commitment was the recent announcement that it will increase production capacity for aerospace aluminum plate by 30% ­ investing nearly $90 million to expand its Davenport, Iowa facility. This will also allow it to cast, roll and machine the largest wing skins ever produced, for the Airbus A380.

Hassey believes the monolithic aluminum structures of today are very competitive and more technologically advanced than ever, and hold many advantages over composites. Alcoa's large R&D effort is focused on new aerospace requirements, and the company can offer manufacturers a menu of solutions for a particular application-for example, choices of whether a particular part or structure should be built up from sheet, cast, forged or extruded.

"Our light metals lab is the largest in the industry," Hassey says. "It is often working five to ten years out, in advance of what manufacturers might need." Thus Alcoa was able to supply Airbus with a new 2026 aluminum alloy for lower wing stringers on the A340-500/600. The alloy has superior strength properties and increased damage tolerance, providing a more durable structure that can accommodate higher loads.

By John Morris


They're not rivets anymore! The Next Generation Lockbolt from Alcoa unit Huck fasteners will save about three tons on an Airbus A380 compared with the current LGP Lockbolt fastener used by aircraft manufacturers around the world.

Each A380 will require about a million such fasteners, Alcoa estimates.

The Next Generation Lockbolts can hold together twice as much material as the current fastener, meaning fewer are needed to assemble a specific panel. They're lighter, too, incorporating new alloys such as Ti-3AL-2.5V titanium in their collars.

 

   
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