TAG: U.S. Air Force

US Air Force says goodbye to 25-year-old GPS satellite

April 24, 2017By
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At 25 years old, GPS Satellite Vehicle No. 27 completed its time in orbit on April 18. With the satellite’s final duty completed, the 2nd Space Operations Squadron (2 SOPS) said goodbye via final command and disposal from Schriever Air Force Base in Colorado. SVN 27 was launched in 1992, meaning it performed more than triple its design life of 7.5... read more

SpaceX wins second US Air Force contract to launch GPS III

March 15, 2017By
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SpaceX has won a second contract from the U.S. Air Force for launch services to deliver a GPS III satellite to its intended orbit. SpaceX was awarded the $96,500,490 firm-fixed-price contract over the United Launch Alliance. ULA — a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security — did not compete for the first GPS III launch contract.... read more

Lockheed responds to report on Air Force review of GPS III propulsion

March 6, 2017By

Lockheed Martin responded to a report by Bloomberg last week that the U.S. Air Force has opened a review of the propulsion systems used for Lockheed Martin’s GPS III and other military satellites, following a problem during an attempt to boost one into orbit. A Lockheed spokesperson said the first GPS III satellite passed all of its qualification testing and... read more

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GPS III satellite propulsion under US Air Force review

March 3, 2017By

The U.S. Air Force has opened a review of the propulsion systems used for Lockheed Martin’s GPS III and other military satellites after a problem during an attempt to boost one into orbit, according to the service, Bloomberg reports. The review has delayed the Air Force’s acceptance of Lockheed’s first GPS III satellite, which is 34 months late. The most recent... read more

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Boeing, US Air Force extend partnership to sustain GPS IIA, IIF

February 6, 2017By
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Boeing and the U.S. Air Force have signed a GPS sustainment agreement to ensure the health of current satellites on orbit. The agreement enables persistent GPS capability for civilians and the military as Boeing works on next-generation GPS satellites. Under the agreement, Boeing will support GPS IIA and IIF satellites on orbit for the next five years. Boeing, which has been... read more

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USAF to test increased GPS signal power Jan. 25

January 24, 2017By

Beginning Wednesday, Jan. 25, Air Force Space Command (AFSPC) will conduct a limited-duration test implementing an increase of the Ll C/A power level on the GPS Block IIR-M and llF satellites — a total of 19 satellites. The C/A power will remain within IS-GPS-200-H specifications, and the power increase is not expected to increase the noise floor by more than... read more

US Air Force approves Lockheed’s ground control upgrade for GPS III

December 15, 2016By
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The U.S. Air Force approved Lockheed Martin’s design to upgrade the current GPS satellite ground control system with new capabilities that will enable it to operate more powerful and accurate GPS III satellites. The successful Critical Design Review (CDR) for the Contingency Operations (COps) contract, completed on Nov. 17, gives Lockheed Martin a green light to proceed with software development... read more

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GPS World remembers defense columnist Don Jewell

December 13, 2016By
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Don Jewell passed away unexpectedly on Oct. 12. For more than nine years, Don wrote the Defense PNT monthly e-newsletter column for GPS World, after a distinguished 30-year career in the U.S. Air Force, retiring as Deputy Chief Scientist for Air Force Space Command with the rank of Lieutenant Colonel. A celebration of his life was held Oct. 20 in... read more