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LAUNCH PAD
ULA launches GPS IIF-11 satellite for US Air Force
by Staff Writers
Cape Canaveral FL (SPX) Oct 31, 2015


The EELV program was established by the U.S. Air Force to provide assured access to space for Department of Defense and other government payloads. The commercially developed EELV program supports the full range of government mission requirements, while delivering on schedule and providing significant cost savings over the heritage launch systems.

A United Launch Alliance (ULA) Atlas V rocket carrying the Global Positioning System (GPS) IIF-11 satellite for the U.S. Air Force lifted off from Space Launch Complex-41 Oct. 31 at 12:13 p.m. EDT.

GPS IIF-11 is one of the next-generation GPS satellites that incorporate numerous improvements to provide greater accuracy, increased signals and enhanced performance for users.

"Congratulations to the entire team on today's successful launch of the GPS IIF-11 satellite! Today's launch was made possible by the exceptional performance and teamwork exhibited by the entire team, including the men and women of ULA, our many mission partners, and our U.S. Air Force customer," said Jim Sponnick, ULA vice president, Atlas and Delta Programs.

"GPS is omnipresent in our everyday lives and the system provides a critical service to the all of those serving in our military around the world. All of the operational GPS satellites have been launched on Atlas and Delta rockets and the U.S. Air Force does an outstanding job of operating this essential system."

This mission was ULA's 11th launch in 2015 and the 102nd successful launch since the company was formed in December 2006. This mission was launched aboard an Atlas V Evolved Expendable Launch Vehicle (EELV) 401 configuration vehicle, which includes a 4-meter-diameter payload fairing. The Atlas booster for this mission was powered by the RD AMROSS RD-180 engine and the Centaur upper stage was powered by the Aerojet Rocketdyne RL10C-1 engine.

GPS IIF-11 will join the GPS worldwide timing and navigation system utilizing 24 satellites in six different planes, with a minimum of four satellites per plane positioned in orbit approximately 11,000 nautical miles above the Earth's surface. The GPS IIF series provides improved accuracy and enhanced performance for GPS users.

ULA's next launch is the Atlas V OA-4 capsule for Orbital ATK scheduled for Dec. 3 from Space Launch Complex-41 from Cape Canaveral Air Force Station, Florida.

The EELV program was established by the U.S. Air Force to provide assured access to space for Department of Defense and other government payloads. The commercially developed EELV program supports the full range of government mission requirements, while delivering on schedule and providing significant cost savings over the heritage launch systems.

With more than a century of combined heritage, United Launch Alliance is the most experienced and reliable launch service provider. ULA has successfully delivered more than 100 satellites to orbit that provide critical capabilities for troops in the field, aid meteorologists in tracking severe weather, enable personal device-based GPS navigation and unlock the mysteries of our solar system.


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