TAG: United Launch Alliance

Launch of last GPS IIF satellite shifts to Friday

February 2, 2016By
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The U.S. Air Force plans to launch the 12th — and final — satellite in the Block IIF series of modernized GPS spacecraft this week. Originally scheduled to launch Feb. 3, the launch has been moved to Friday, Feb. 5. According to United Launch Alliance (ULA), the cause for the schedule slip was “concerns over the integrity of electrical connectors on the Atlas V... read more

GPS programs at a crossroads: Which way forward?

December 9, 2015By

The late, great, oft-quoted Yogi Berra, in an interview shortly before his passing, was quoted as saying “I never said most of the things I said.” For our purposes, let’s concentrate on one of his most famous quotes: “When you come to a fork in the road, take it.” On to GPS. I use the term GPS in a ubiquitous PNT... read more

ULA won’t bid on GPS III launch contract

November 17, 2015By

The United Launch Alliance (ULA) declined Nov. 16 to submit a bid to launch the GPS III satellite, leaving the field wide open for commercial launch service SpaceX, reports Space News. The first GPS III satellite is expected to launch in 2018. SpaceX is likely to win the U.S. Air Force launch contract by default. Every operational GPS mission has... read more

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GPS IIF-10 Launches from Cape Canaveral

July 15, 2015By
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UPDATE (July 15, 4 p.m. ET): United Launch Alliance (ULA) officials have declared the launch mission a success. The Centaur upper stage completed its second burn and released the GPS IIF-10 satellite into the navigation network to complete today’s launch of the Atlas 5 rocket. “Congratulations to the U.S Air Force and the entire mission team on today’s successful launch of... read more

GPS IIF-10 Satellite Readied for July 15 Launch

July 7, 2015By
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United Launch Alliance crews on July 7 placed the next GPS satellite on top of an Atlas V rocket for blastoff later this month, reports SpaceFlight Now. Liftoff for the GPS IIF-10 satellite will take place July 15, between 11:36 and 11:55 a.m. EDT, from Space Launch Complex (SLC)-41 at Cape Canaveral, Fla. This is the second of three GPS constellation replenishment flights planned... read more

SpaceX Falcon 9 Certified for GPS Launches

May 28, 2015By
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The U.S. Air Force has certified SpaceX’s Falcon 9 rocket to launch military satellites, clearing the way for SpaceX to bid on launches of GPS III satellites. The Air Force announced the decision May 26, which completed a nearly two-year process and establishes a competitor to United Launch Alliance. SpaceX, based in Hawthorne, Calif., is now eligible for award of qualified national security... read more

Delta IV GPS IIF-9 Launch Highlights

April 2, 2015By

The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) launched on March 25 aboard a United Launch Alliance (ULA) Delta IV rocket, which has been the workhorse of the GPS fleet for successful launches. ULA provided this video showing highlights of the launch. read more

GPS IIF-9 Successfully Lifts Off from Cape Canaveral

March 25, 2015By
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The U.S. Air Force’s ninth GPS Block IIF satellite (GPS IIF-9) launched on time Wednesday at 2:36 p.m. EDT (1836 GMT)  from Space Launch Complex 37 at Cape Canaveral Air Force Station, Fla. The GPS satellite has been deployed by the Delta IV rocket. read more