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USA-214 was launched by [[United Launch Alliance]], using an [[Atlas V]] 531 carrier rocket flying from [[Cape Canaveral Air Force Station Space Launch Complex 41|Space Launch Complex 41]] at the [[Cape Canaveral Air Force Station]]. The launch occurred at 11:07 UTC on 14 August 2010,<ref>{{cite web|url=http://www.spaceflightnow.com/atlas/av019/|title=Rise and shine: Atlas 5 rocket successfully soars at dawn|last=Ray|first=Justin|date=14 August 2010|publisher=Spaceflight Now|accessdate=16 August 2010}}</ref> and resulted in the spacecraft being deployed successfully into a [[geosynchronous transfer orbit]] with a [[apsis|perigee]] of {{convert|221|km}}, an [[apsis|apogee]] of {{convert|50179|km}}, and 22.2 degrees of [[inclination]].<ref>{{cite web|url=http://planet4589.org/space/jsr/latest.html|title=Issue 632|last=McDowell|first=Jonathan|date=12 August 2010|publisher=Jonathan's Space Report|accessdate=16 August 2010}}</ref> |
USA-214 was launched by [[United Launch Alliance]], using an [[Atlas V]] 531 carrier rocket flying from [[Cape Canaveral Air Force Station Space Launch Complex 41|Space Launch Complex 41]] at the [[Cape Canaveral Air Force Station]]. The launch occurred at 11:07 UTC on 14 August 2010,<ref>{{cite web|url=http://www.spaceflightnow.com/atlas/av019/|title=Rise and shine: Atlas 5 rocket successfully soars at dawn|last=Ray|first=Justin|date=14 August 2010|publisher=Spaceflight Now|accessdate=16 August 2010}}</ref> and resulted in the spacecraft being deployed successfully into a [[geosynchronous transfer orbit]] with a [[apsis|perigee]] of {{convert|221|km}}, an [[apsis|apogee]] of {{convert|50179|km}}, and 22.2 degrees of [[inclination]].<ref>{{cite web|url=http://planet4589.org/space/jsr/latest.html|title=Issue 632|last=McDowell|first=Jonathan|date=12 August 2010|publisher=Jonathan's Space Report|accessdate=16 August 2010}}</ref> |
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The spacecraft was intended to manoeuvre from the transfer orbit into which it was launched to its operational [[geosynchronous orbit]] by means of a liquid [[apogee motor]] and several [[Hall effect thruster]]s. The apogee motor malfunctioned shortly after ignition for its first burn on 15 August 2010, and following another failure on 17 August it was declared inoperable. |
The spacecraft was intended to manoeuvre from the transfer orbit into which it was launched to its operational [[geosynchronous orbit]] by means of a liquid-fueled [[apogee motor]] and several [[Hall effect thruster]]s. The apogee motor malfunctioned shortly after ignition for its first burn on 15 August 2010, and following another failure on 17 August it was declared inoperable. {{asof|2010|08}}, controllers planned to use the spacecraft's Hall Effect low-thrust manoeuvring engines to raise its orbit in place of the failed apogee motor, however, due to their low thrust, this was expected to take up to nine months to reach geosynchronous orbit. Nominally it takes 105 days.<ref name="SFN-EngineFailure">{{cite web|url=http://www.spaceflightnow.com/atlas/av019/100830orbit.html|title=Military satellite relying on backup plan to save itself|last=Ray|first=Justin|date=30 August 2010|publisher=Spaceflight Now|accessdate=31 August 2010}}</ref><ref>{{cite web |url=http://www.aviationweek.com/aw/generic/story_channel.jsp?channel=space&id=news/asd/2010/11/12/02.xml |title=Japanese Engine Not AEHF Issue: USAF Official |first=Amy |last=Butler |date=15 November 2010 |publisher=Aviation Week |accessdate=29 January 2011}}</ref><ref>{{cite web |url=http://www.aviationweek.com/aw/generic/story_generic.jsp?channel=space&id=news/awst/2010/11/22/AW_11_22_2010_p36-270626.xml |title=USAF: AEHF-1 Engine Failure An Anomaly |first=Amy |last=Butler |date=22 November 2010 |publisher=Aviation Week |accessdate=29 January 2011}}</ref>{{upadate after}}<!-- 20110920: okay, it's been nine months. Did it get to GEO? Fail along the way? --> |
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==References== |
==References== |
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Template:Infobox spacecraft USA-214, known before launch as Advanced Extremely High Frequency 1orAEHF SV-1, is a military communications satellite operated by the United States Air Force. It is the first of four spacecraft to be launched as part of the Advanced Extremely High Frequency programme, which will replace the earlier Milstar system.[1]
The USA-214 spacecraft was constructed by Lockheed Martin, and is based around the A2100 satellite bus. The spacecraft has a mass of 6,168 kilograms (13,598 lb) and a design life of 14 years.[2] It will be used to provide super high frequency and extremely high frequency communications for the armed forces of the United States, as well as those of the United Kingdom, the Netherlands, and Canada.[1]
USA-214 was launched by United Launch Alliance, using an Atlas V 531 carrier rocket flying from Space Launch Complex 41 at the Cape Canaveral Air Force Station. The launch occurred at 11:07 UTC on 14 August 2010,[3] and resulted in the spacecraft being deployed successfully into a geosynchronous transfer orbit with a perigee of 221 kilometres (137 mi), an apogee of 50,179 kilometres (31,180 mi), and 22.2 degrees of inclination.[4]
The spacecraft was intended to manoeuvre from the transfer orbit into which it was launched to its operational geosynchronous orbit by means of a liquid-fueled apogee motor and several Hall effect thrusters. The apogee motor malfunctioned shortly after ignition for its first burn on 15 August 2010, and following another failure on 17 August it was declared inoperable. As of August 2010[update], controllers planned to use the spacecraft's Hall Effect low-thrust manoeuvring engines to raise its orbit in place of the failed apogee motor, however, due to their low thrust, this was expected to take up to nine months to reach geosynchronous orbit. Nominally it takes 105 days.[5][6][7]Template:Upadate after
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