TAG: United Launch Alliance

Seventh GPS IIF Satellite Lauch Planned for Friday

July 29, 2014By
Photo credit: United Launch Alliance.

The Air Force is set to launch the seventh GPS IIF satellite this Friday. An Atlas V 401 will launch the GPS IIF-7 mission for the U.S. Air Force on Friday, August 1, from Space Launch Complex (SLC)-41 at Cape Canaveral Air Force Station, Florida. The 18-minute launch window opens at 11:23 p.m. EDT. A live webcast of the launch will begin at 11:03 p.m. EDT. To... read more

This article is tagged with , , and posted in GNSS News, GPS Modernization, Latest News

GPS IIF-6 Launched into Orbit Following Weather Delay

May 17, 2014By
Photo credit: United Launch Alliance.

The sixth GPS Block IIF satellite was successfully launched Friday at 8:03 p.m. local time. Built by Boeing Space and Intelligence Systems of El Segundo, California, GPS IIF-6 launched aboard a United Launch Alliance Delta 4 rocket from Cape Canaveral Air Force Station in Florida. The launch was originally planned for Thursday evening, but bad weather led to a 24-hour... read more

GPS IIF-6 Launch Delayed until Friday Night

May 14, 2014By

Update: The launch of the GPS IIF-6 satellite has been delayed one day due to bad weather. Another GPS IIF satellite is expected to lift off aboard a United Launch Alliance Delta 4 rocket from Cape Canaveral at 8:08 p.m. EDT May 15 at the opening of an 18-minute launch window. The satellite, designated GPS IIF-6 and built by Boeing,... read more

New GPS IIF Satellite Launched

February 21, 2014By
A United Launch Alliance Delta IV lifts off from Space Launch Complex-37 with the Air Force's Global Positioning System (GPS) IIF-5 satellite. This launch marked the 25th Delta IV flight since the first flight in 2002.

News compiled with the assistance of CANSPACE listserv. After a brief delay due to concerns over solar radiation trends, the GPS IIF-5 satellite was successfully launched at the end of the designated launch window at 01:59 UTC on February 21. The satellite, attached to the launch rocket’s upper stage, was initially placed in a highly elliptical orbit. Following a third... read more

Launch of GPS Satellite Struggled through Tense Moments

December 10, 2012By
United Launch Alliance Delta IV rocket blasts off from Space Launch Complex-37 with the U.S. Air Force’s Global Positioning System (GPS) IIF-3 satellite. This launch marks the 9th ULA launch this year, the 54th Evolved Expendable Launch Vehicle (EELV) mission, and the 65th launch since ULA was formed nearly six years ago.

A new report by Spaceflight Now reveals that the launch October 4 of a GPS satellite experienced tense touch-and-go moments. The Delta 4 rocket’s cryogenic upper stage engine experienced a fuel leak that caused a low-thrust condition. Four-and-a-half minutes into the launch, after the first stage had shut down and separated, the trouble began as the RL10B-2 engine on the... read more

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