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AMERICA'S CUP

ORACLE Racing eyes July launch of first AC72 catamaran

oracle racing eyes july launch of first ac72 catamaran
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At an ORACLE Racing press conference today CEO Russell Coutts described how the team’s first AC72 catamaran is in an advanced state of construction at three locations around the Pacific Rim.

Workers at the team’s base at Pier 80 in San Francisco, Core Builders Composites in New Zealand and Janicki Industries in the Pacific Northwest are targeting July for the launch of the new class of America’s Cup yacht. America’s Cup rules permit teams to launch their first AC72 yacht after July 1.
“No question the AC72 will be a big step up from the AC45 we are currently racing on the America’s Cup World Series circuit,” says team skipper James Spithill. “The AC45s have proven spectacular; the AC72s will be sensational.”
The AC72 is the new class of America’s Cup yacht that is designed to a box rule, one that sets tight limits on parameters such as length, beam, weight and wingsail area.
The team has split production of its yacht between three sites because each is a center of excellence.
At Pier 80 in the 34th America’s Cup host city, the team builds the basic molds for the hulls and crossbeams of the catamaran. The molds are then shipped to Janicki Industries, north of Seattle, Wash., where the large structures are machined to fine tolerances.
In a process in which Janicki is a world leader, high-tech resin is applied to the molds and then machined to its final shape by a five-axis mill to tolerances finer than the thickness of a sheet of paper.
“We’ve worked with Janicki for nearly 10 years because every little fraction of accuracy you achieve accumulates. Greater accuracy means less material and less weight. That means the boat is built precisely as the designers conceived it,” said shore team manager Mark Turner.
ORACLE Racing’s hull molds were refined at Janicki’s plant in the same mill that handles secret work for some of the largest manufacturers of civilian and military aircraft and aero structures in the world.
Once the finished molds are back at Pier 80, a boatbuilding team begins to laminate the high-strength, carbon-fiber cloths with epoxy resin.
Since last year teams have raced the AC45 catamaran in the America’s Cup World Series, a circuit of events in Europe and the US. The AC45 is a one-design yacht, meaning that each is built by a single manufacturer to the same exact specifications. CBC built the fleet of AC45 catamarans that were designed as a means to fast-track teams’ understanding of wingsail technology. The AC45 will continue on the World Series into next year.
The AC72 will feature next summer in the Louis Vuitton Cup Challenger Series (July 4-Sept. 1, 2013) and America’s Cup Finals (Sept. 7-22, 2013). The step up in performance will be phenomenal.
“In the AC45 class, the boats are the same so the results are often determined by the sailors who made the better decisions and handled their boat better,” said ORACLE Racing CEO Russell Coutts, the all-time America’s Cup winner.
“In the AC72, teams will develop their own design so technology plays a bigger role. Compared to any previous America’s Cup, the design rule is relatively tight. Technology will produce a faster, smarter boat, but not a ‘golden bullet’ design,” Coutts said.
Design comparison
AC45
Hull Length               13.45 m (44 feet)
Maximum Beam       6.90 m (22.6 feet)
Wing Height              24.50 m* (80.38 feet)
Maximum Draft         2.70 m (8.8 feet)
Displacement           1,400 kgs (3,086 pounds)
Wing Area                 93.7 sqm (1,008.58 square feet)
Jib Area                     30 sqm (323 square feet)
Gennaker Area         100 sqm (1,076 square feet)
Crew                           5@85 kgs/per (187 pounds)
(*Note: The stock wing height for the AC45 is 21.5 m/70.5 feet)
AC72
Hull Length               22.0 m (72.18 feet)
Maximum Beam       14.0 m (45.93 feet)
Wing Height              40.0 m (131.23 feet)
Maximum Draft         4.4 m (14.44 feet)
Displacement           5,900 kg (13,007 pounds)
Wing Area                 260 sqm (2,798 square feet)
Jib Area                     100 sqm (1,076 square feet)
Gennaker Area         400 sqm (4,305 square feet)
Crew                           11@92 kgs/per (203 pounds)


Photo ©Guilain Grenier/ORACLE Racing


22/02/2012 10:35:00 © riproduzione riservata






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