An International Launch Services Atlas V rocket lifts off from Cape Canaveral, Fla., Friday, to deliver the Inmarsat 4-F1 satellite into orbit. This was the 76th straight successful flight for the Atlas family of vehicles, which is built by Lockheed Martin. Inmarsat 4-F1, at 13,138 pounds, is the heaviest commercial communications satellite to be launched. For additional thrust, the Atlas vehicle used three strap-on solid rocket boosters, all of which can be seen in this photo. (Photo: Business Wire)

Tonight's vehicle used the Atlas V "431" configuration, meaning it had a 4-meter-diameter fairing, three solid rocket boosters (SRBs) and a single-engine Centaur upper stage. Atlas V vehicles have now flown five times, three of them with SRBs.

"The Atlas series now has achieved an unprecedented string of 76 successful launches, and we're proud to count this mission and two others for Inmarsat among them," said ILS President Mark Albrecht.

"This is a milestone launch for us, also, in terms of the size of the payload," Albrecht said. "Inmarsat 4-F1 is one of largest commercial communications satellites in the world, as well as the most massive satellite launched by Atlas. Yet it falls into the middle of the Atlas V capability range, demonstrating the flexibility of our design."

The spacecraft is a Eurostar E3000 model built by EADS Astrium. It is the first in a generation of satellites that will support Inmarsat's new Broadband Global Area Network (BGAN), delivering internet and intranet content and solutions, video-on-demand, videoconferencing, fax, e-mail, phone and LAN access at speeds up to 432kbit/s almost anywhere in the world. BGAN will also be compatible with third-generation cellular systems. The operating location for Inmarsat 4-F1 is 65 degrees East longitude.

"We thank ILS for the safe delivery of our first I-4 satellite into space," said Andrew Sukawaty, chairman and CEO of Inmarsat. "The first two I-4 satellites will bring broadband communications to 86 percent of the world. History has been made and the world has become closer through advanced data communications."

Antoine Bouvier, CEO of EADS Astrium, said: "This successful launch is a major event for EADS Astrium, as Inmarsat-4 is certainly one of the most sophisticated communications satellites ever built. We thank for this achievement International Launch Services, and Inmarsat for the confidence they had in EADS Astrium on this innovative and ambitious program."

ILS is a joint venture of Lockheed Martin of Bethesda, Md., and Khrunichev State Research and Production Space Center of Moscow. ILS is the global leader in launch services, offering the industry's two best launch systems: Atlas and Proton. With a remarkable launch rate of 73 missions since 2000, the Atlas and Proton launch vehicles have consistently demonstrated the reliability and flexibility that have made them preferred choice among satellite operators worldwide. Since the beginning of 2003, ILS has signed more new commercial contracts than all of its competitors combined.

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