Space Shuttle Enterprise flies past the Manhattan skyline while making its final voyage April 27, from Washington to New York, where it will be placed on permanent exhibit July 19 as one of the Intrepid Sea, Air and Space Museum's major attractions. En route to John F. Kennedy International Airport, tens of thousands of spectators on the New York and New Jersey sides of the Hudson River were treated to dramatic views of the prototype test vehicle and the NASA Boeing 747 that transported the orbiter.

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Across composite and metallic aircraft structures, technology is being developed and deployed to minimize component lead times, reduce manufacturing costs and increase production rates. Automated processes that can take component geometry data directly from three-dimensional design databases are high on the most-desired list for aerospace manufacturers.

Cutting and drilling of cured composite components during manufacture or repair are a growing challenge as structures become bigger, more complex and costly.

Overseas space companies are seeking U.S. partnersOverseas space companies are seeking U.S. partners

Friction welding fuses metals without melting them and is used in aerospace to join engine disks (rotational welding) or fabricate aircraft and spacecraft structures (friction-stir welding). Now hybrid components produced by linear friction welding of dissimilar metals promise to overcome a key disadvantage of composites: carbon fiber cannot be attached directly to aluminum because of galvanic corrosion, forcing use of higher-cost titanium. But friction welding can allow titanium to be incorporated into the join between aluminum and composite structures.