WASHINGTON
— The U.S. Air Force’s Space and Missile Systems Center has cleared the
third missile-warning Space Based Infrared System satellite for launch
following an investigation into the satellite’s engine.
The launch of the Lockheed Martin-built satellite was originally
scheduled for Oct. 3, but was pushed back when a supplier told the
company they had an issue on an unrelated satellite with one of their
engine components, a part that was also used aboard SBIRS.
“On Sept. 6, Lockheed Martin was notified by their supplier that the
same type of [Liquid Apogee Engine] that was installed on SBIRS GEO
Flight-3 had experienced an anomaly on a different, non-SBIRS
satellite,” the Air Force said in a statement.
Neither Lockheed Martin nor the Air Force have identified the
supplier, or specified what exactly was the issue with the component.
Lockheed Martin indicated they did not build the space vehicle that
suffered the engine anomaly, which would rule out the Navy’s Mobile User
Objective System-5 satellite that experienced propulsion problems in
June following launch and took almost four months to reach its assigned
orbit.
Investigators said they conducted a variety of tests, including
firing a liquid apogee engine (LAE) similar to what is on the SBIRS
launch, and concluded that the engine “exhibits normal performance.”
“The safety of our national security space assets is a top priority
and the entire investigation team was thoroughly committed to getting
this right,” said Lt. Gen. Samuel Greaves, commander of SMC, in a
statement. “The investigation team used modern diagnostics to assess the
health of the SBIRS GEO Flight-3 LAE, and we determined it does not
exhibit any of the anomalous behavior experienced on the failed
component from the non-SBIRS satellite.”
The investigation concluded Nov. 30 and the satellite has been
approved for fueling operations Dec. 6–11 at Cape Canaveral, Fla. Launch
is currently scheduled for Jan. 19.
SBIRS GEO Flight-3 will be the next element of the Air Force’s
missile-warning constellation designed to replace the aging Defense
Support Program satellites. The first two satellites in the $19 billion
constellation launched in 2011 and 2013.
The constellation is currently controlled from the SBIRS Mission Control Station at Buckley Air Force Base in Aurora, Colorado.
Lockheed Martin also celebrated the Air Force signing-off on an
upgrade to the SBIRS ground control system that collects data from SBIRS
and DSP satellites as well as missile-warning satellites in elliptical
orbits.
“The Block 10 system includes upgrades like faster collection times,
improved threat detections and improved target tracking and infrared
information to see dimmer events faster,” the company said in a press
release.
In August, Col. John Wagner, the 460
th Space Wing
commander at Buckley, said his unit was “already seeing improvements
across the board with improved surveillance and warning” during the
testing and evaluation phase of the Block 10 upgrades.
- See more at: http://spacenews.com/sbirs-geo-3-cleared-for-launch-following-engine-investigation/#sthash.Uo1lYt1P.dpuf
WASHINGTON
— The U.S. Air Force’s Space and Missile Systems Center has cleared the
third missile-warning Space Based Infrared System satellite for launch
following an investigation into the satellite’s engine.
The launch of the Lockheed Martin-built satellite was originally
scheduled for Oct. 3, but was pushed back when a supplier told the
company they had an issue on an unrelated satellite with one of their
engine components, a part that was also used aboard SBIRS.
“On Sept. 6, Lockheed Martin was notified by their supplier that the
same type of [Liquid Apogee Engine] that was installed on SBIRS GEO
Flight-3 had experienced an anomaly on a different, non-SBIRS
satellite,” the Air Force said in a statement.
Neither Lockheed Martin nor the Air Force have identified the
supplier, or specified what exactly was the issue with the component.
Lockheed Martin indicated they did not build the space vehicle that
suffered the engine anomaly, which would rule out the Navy’s Mobile User
Objective System-5 satellite that experienced propulsion problems in
June following launch and took almost four months to reach its assigned
orbit.
Investigators said they conducted a variety of tests, including
firing a liquid apogee engine (LAE) similar to what is on the SBIRS
launch, and concluded that the engine “exhibits normal performance.”
“The safety of our national security space assets is a top priority
and the entire investigation team was thoroughly committed to getting
this right,” said Lt. Gen. Samuel Greaves, commander of SMC, in a
statement. “The investigation team used modern diagnostics to assess the
health of the SBIRS GEO Flight-3 LAE, and we determined it does not
exhibit any of the anomalous behavior experienced on the failed
component from the non-SBIRS satellite.”
The investigation concluded Nov. 30 and the satellite has been
approved for fueling operations Dec. 6–11 at Cape Canaveral, Fla. Launch
is currently scheduled for Jan. 19.
SBIRS GEO Flight-3 will be the next element of the Air Force’s
missile-warning constellation designed to replace the aging Defense
Support Program satellites. The first two satellites in the $19 billion
constellation launched in 2011 and 2013.
The constellation is currently controlled from the SBIRS Mission Control Station at Buckley Air Force Base in Aurora, Colorado.
Lockheed Martin also celebrated the Air Force signing-off on an
upgrade to the SBIRS ground control system that collects data from SBIRS
and DSP satellites as well as missile-warning satellites in elliptical
orbits.
“The Block 10 system includes upgrades like faster collection times,
improved threat detections and improved target tracking and infrared
information to see dimmer events faster,” the company said in a press
release.
In August, Col. John Wagner, the 460th Space Wing
commander at Buckley, said his unit was “already seeing improvements
across the board with improved surveillance and warning” during the
testing and evaluation phase of the Block 10 upgrades.
- See more at: http://spacenews.com/sbirs-geo-3-cleared-for-launch-following-engine-investigation/#sthash.Uo1lYt1P.dpuf