ILS Proton Successfully Launches Inmarsat-5 F1

  ILS Proton Successfully Launches Inmarsat-5 F1

    First Global Xpress^®Satellite Launch; 7^th ILS Proton Launch of 2013

Business Wire

BAIKONUR COSMODROME, Kazakhstan -- December 8, 2013

An International Launch Services (ILS) Proton Breeze M successfully placed the
Inmarsat-5 F1 (I-5 F1) satellite into a super-synchronous (geo-stationary)
transfer orbit (SSTO) today. The spacecraft was launched for Inmarsat, the
leading provider of global mobile satellite communications services. I-5 F1 is
the first of three Inmarsat next-generation Global Xpress^® satellites
scheduled to launch before the end of 2014. This marks the seventh launch of
the year and the third SSTO mission for ILS, a leader in providing mission
integration and launch services to the global commercial satellite industry.

ILS Proton successfully launched the Inmarsat-5 F1 satellite into
supersynchronous transfer orbit fr ...

ILS Proton successfully launched the Inmarsat-5 F1 satellite into
supersynchronous transfer orbit from the Baikonur Cosmodrome in Kazakhstan on
December 9, 2013. (Photo: Business Wire)

The Proton launch vehicle, carrying the I-5 F1 satellite, lifted off from Pad
39 at the Baikonur Cosmodrome yesterday at 18:12 local time (12:12 GMT and
07:12 EST). The SSTO mission utilized a 5-burn Breeze M mission design to
advance the orbital unit first to a circular parking orbit, then to an
intermediate orbit, followed by a transfer orbit, and finally to a 65,000
km-apogee super-synchronous transfer orbit. After a 15-hour, 31-minute
mission, the satellite was placed into the target orbit by the Proton
launcher. SSTO missions provide increased heavy-lift performance over GTO
mission designs, allowing our customers the capability to maximize spacecraft
operational lifetime.

The satellite was manufactured by Boeing Satellite Systems International, Inc.
and built on the flight proven 702HP platform. Weighing over 6 metric tons at
lift-off, the I-5 F1 satellite has 89 Ka-band fixed beams and 6 steerable
ones. I-5 F1 is designed to generate approximately 15 kilowatts of power at
the start of service and approximately 13.8 kilowatts at the end of its
15-year design life. To generate such high power, the spacecraft's two solar
wings employ five panels of ultra-triple-junction solar cells.

Global Xpress will be the first globally available high-speed broadband
Ka-band network. It will offer the unique combination of global coverage from
a single operator, consistent higher performance of up to 50Mbps, and the
network reliability for which Inmarsat is renowned. Based on Ka-band
technology, Global Xpress will consistently deliver higher performance through
more compact terminals at a lower cost than existing VSAT services, making it
accessible to many more users.

ILS President Phil Slack stated, “We are honored to share this momentous
occasion with Inmarsat, true innovators in the satellite communications
industry, with the first ILS Proton launch of three in the Global Xpress
constellation. Today’s ILS Proton launch builds on a strong relationship
between Inmarsat and ILS dating back to 2008 with the launch of an Inmarsat-4
satellite. We thank the teams who worked tirelessly on the successful launch
of I-5 F1 and look forward to our upcoming missions with Inmarsat.”

“Global Xpress is the result of three years of planning and, together with a
fourth Inmarsat-5 satellite we ordered recently from Boeing, represents an
investment of US$1.6 billion in our next generation of high bandwidth, high
capacity, mobile broadband communications satellites,” said Rupert Pearce,
CEO, Inmarsat. “Our Global Xpress constellation, which is on schedule to
achieve full global coverage by the end of 2014, will ensure our satellite
services fully support the current and future needs of our end-users across
the world - whether on land, at sea or in the air. I wish to thank the teams
at Inmarsat and Boeing for their hard work and ingenuity in bringing this
highly innovative programme to fruition. We also thank our experienced
partners at ILS and Khrunichev for their dedication and assurance in ensuring
this mission was successful. We look forward to our future ILS Proton launches
next year.”

The I-5 F1 launch also marked the 392nd launch for Proton since its maiden
flight in 1965 and the 84th ILS Proton Launch overall. This was also the 16th
Boeing-built satellite launched on an ILS Proton and the 3rd Inmarsat
satellite launched on Proton overall. The Proton M Breeze M vehicle is
developed and built by Khrunichev Research and Production Space Center of
Moscow, Russia’s premier space industry manufacturer and majority shareholder
in ILS.

About ILS and Khrunichev

ILS is a world leader in providing launch services for global satellite
operators and offers a complete array of services and support, from contract
signing through mission management and on-orbit delivery. ILS has exclusive
rights to market the Proton vehicle to commercial satellite operators
worldwide and is a U.S. company headquartered in Reston, VA., near Washington,
D.C. For more information, visit

Khrunichev, which holds the majority interest in ILS, is one of the
cornerstones of the Russian space industry. Khrunichev manufactures the Proton
system and is developing the Angara launch system. The Proton launches from
facilities at the Baikonur Cosmodrome in Kazakhstan, and has a heritage of
more than 390 missions since 1965. Khrunichev includes, among its branches, a
number of key manufacturers of launch vehicle and spacecraft components in
Moscow and in other cities of the Russian Federation. For more information,

About Inmarsat

Inmarsat plc is the leading provider of global mobile satellite communications
services. Since 1979, Inmarsat has been providing reliable voice and
high-speed data communications to governments, enterprises and other
organizations, with a range of services that can be used on land, at sea or in
the air. Inmarsat employs around 1,600 staff in more than 60 locations around
the world, with a presence in the major ports and centres of commerce on every
continent. Inmarsat is listed on the London Stock Exchange (LSE:ISAT.L). For
more information, please visit

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Media Inquiries:
International Launch Services
Karen Monaghan, Director of Communications
mobile: +1-571-282-5195
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