AMC-14 (satellite)

infobox Spacecraft
Name = AMC-14
Organisation = SES Americom
Major_Contractors = Lockheed Martin
Carrier_Rocket = Proton-M/Briz-M
Mission_Type = Communication
Launch = 23:18:55 GMT, 14 March 2008
Mission_Duration = 15 years (planned)
NSSDC_ID = 2008-011A
Orbital_elements = yes
Two-line elements
1 32708U 08011A 08218.17526905 -.00000100 00000-0 00000+0 0 1706
2 32708 017.7092 139.1162 1992266 022.9746 025.1307 01.30562691 2560
Orbit_regime = GSO (planned)
MEO (achieved)
Longitude = 61.5°W (planned)
Periapsis = nowrap|convert|21945|km|nmihttp://www.n2yo.com/satellite/?s=32708]
(2008-08-06)
Apoapsis = nowrap|convert|36034.7|km|nmi|lk=on
(2008-08-06)
Inclination = 17.7° (2008-08-06)

AMC-14 is a communications satellite owned by SES Americom which was to have been placed in geostationary orbit, following launch by a Proton rocket. Built by Lockheed Martin and based on the A2100 satellite bus, AMC-14 was to have been located at 61.5° west longitude and would have been used for DISH Network service. The satellite was placed in an unusable orbit, following a malfunction with the Briz-M upper stage of the Proton rocket.

It was launched atop a Proton-M/Briz-M rocket at 23:18:55 GMT on 14 March 2008, from LC-200/39 at the Baikonur Cosmodrome in Kazakhstan.

Description

AMC-14 was based on the A2100AX platform, and included 32 Ku-band transponders which would have provided 24 MHz of bandwidth each. The spacecraft antenna were designed operate over either of two orbital arcs: 61.5°W to 77°W or 110°W to 148°W. AMC-14 also carried a demonstration payload that would have allowed coverage to be reshaped on orbit.

Launch anomaly

An anomaly occurred during the second burn of the Briz-M upper stage. [cite web |url=http://www.ilslaunch.com/news-031408/ |title=ILS declares Proton launch anomaly |publisher=International Launch Services] As a result, the satellite failed to reach the planned orbit. The Russian commission investigating the anomaly determined the cause to be a rupture of the gas duct between the gas generator and the propellant pump turbine in the Breeze M main engine, which caused the upper stage engine to shut down two minutes early. [cite web |url=http://www.ilslaunch.com/russian-commission-determines-cause-of-amc-14-breeze-m-failure |title=Russian Commission Determines Cause of AMC-14 Breeze M Failure |publisher=International Launch Services] AMC-14 was the 36th A2100 spacecraft and was expected to provide more than 15 years of service life. SES and Lockheed Martin explored ways to attempt to bring the functioning satellite into its correct orbital position, and subsequently began attempting to move the satellite into geosynchronous orbit by means of a lunar flyby (as done a decade earlier with HGS-1). In April 2008, it was announced that this had been abandoned after it was discovered that Boeing held a patent [cite web|url=http://www.google.com/patents?id=9EAFAAAAEBAJ&dq=|title=US Patent 6116545|publisher=Google Patents] on the trajectory that would be required.cite web | url = http://www.space-travel.com/reports/Boeing_Patent_Shuts_Down_AMC_14_Lunar_Flyby_Salvage_Attempt_999.html
title = Boeing Patent Shuts Down AMC-14 Lunar Flyby Salvage Attempt | publisher = space-travel.com ] At the time, a lawsuit was ongoing between SES and Boeing, and Boeing refused to allow the trajectory to be used unless SES dropped its case. Another company has expressed interest in purchasing the satellite, however SES have begun procedures to expedite the satellite's immediate de-orbit. Whilst it is expected that the patent would not stand up to legal challenge, SES intend to de-orbit the spacecraft in order to collect the insurance payout. If this attempt had been successful, the extra use of fuel needed to correct the orbital error would have significantly reduced AMC-14's originally expected service life of 15 years to just four. [ [http://www.broadcastingcable.com/article/ca6540928.html Dish Network Suffers Failed Satellite Launch] ] [ [http://www.multichannel.com/article/ca6541175.html Satellite Snafu Will Delay Dish Network’s HD Expansion] ] [ [http://blogs.barrons.com/techtraderdaily/2008/03/17/dish-network-satellite-launch-could-be-total-loss/?mod=BOLBlog DISH Network Satellite Launch Could Be Total Loss] ]

Satellite's Fate

SES Americom has told its insurers that its recently launched AMC-14 is a total loss because it's in the wrong orbit and cannot be moved into correct orbit, according to Thomson Financial. The satellite is fully insured for about $150 million, so SES won't incur a loss.Officials said they evaluated several options for recovering the marooned satellite. Saving AMC 14 would have used much of the satellite's operational maneuvering propellant, significantly reducing its useful life from the 15-year expectation before launch.

On 23 April, it was reported that SES was in talks with the United States Department of Defense over purchasing the satellite. [http://www.spacemart.com/reports/SES_Negotiating_To_Sell_AMC-14_To_US_Government_Agency_999.html Spacemart.com - SES Negotiating To Sell AMC-14 To US Government Agency] ] It is understood that several other bids, including one from Echostar, have been received. Fact|date=April 2008 Most of the commercial companies are intending to use the Lunar flyby trajectory option to correct the orbital inclination of the satellite, while the US DoD plan to leave the satellite in an inclined orbit. It is understood that SES prefers the DoD bid, as they do not want a customer to prove to insurers that the lunar flyby option would have resulted in a commercially viable service life. There are some concerns over the legality of a purchase by the US Government, under the 1998 Commercial Space Act.

In anticipation of the US Government’s offer being viewed as illegal an independent European/Asian investment group made a counteroffer to the insurers which called for a minimum upfront cash payment of US$15 million with the intention of returning the satellite to ageosynchronous orbit using the lunar flyby mission and thereafter providing commercial services. Negotiations were slow to start in spite of the alternative $10M purchase proposal from the US Government which was 33% lower than the improved offer from the European/Asian investment group.

What the current plan for AMC-14 is or if it has been purchased and if so, by whom, are all questions without answers as of August 6,2008 -- currently, no announcements have been made nor have any new news stories or updates been published. However, it is known (albeit unofficially) based on orbital data, the satellite is currently in the process of changing its orbit. The first signs of an orbital adjustment maneuver became evident one day after SES announced it was in sales negotiations on 24 April when its Perigee rose by about 35mi to 777km along with a slight rise in Apogee to 35572 km. [http://www.satelliteguys.us/dish-network-forum/133115-amc-14-story-gets-more-interesting-2.html] Also, for comparison, at the time Inclination was 48.989, Eccentricity was 0.708, and it had an orbital time of 638.12 min. As of August 6, AMC-14 orbit is vastly different. Figures for Perigee(Periapsis), Apogee (Apoapsis) and Inclination are given in the info box at the beginning of this article, Inclination has dropped to 17.7 and Eccentricity has decreased to 0.199.

References

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