Arianespace release
Ariane 5 scores a double success with Syracuse 3A and Galaxy 15
Arianespace marked another on-target success tonight with Ariane 5,
which orbited a dual payload consisting of a military communications
satellite and a multi-mission civilian relay platform.
The Ariane 5 Generic launcher lifted off from Europe's Spaceport in
French Guiana at the 7:32 p.m. opening of its launch window (local time
in French Guiana), and flew the planned trajectory to deploy Syracuse 3A
and Galaxy 15 in geostationary transfer orbit.
Arianespace's video broadcast – carried live on www.arianespace.com –
clearly showed the Ariane 5's ascent and climbout, including the
jettison of its two solid propellant boosters at an altitude of some 69 km.
Today's mission underscored Arianespace's flexibility to accommodate
multiple payloads on a single Ariane 5 flight, as well as its ability to
handle spacecraft from both civilian and military customers.
"Arianespace celebrates its 25th anniversary this year, and tonight's
success is exemplary - placing our 225th and 226th satellites in orbit,"
Arianespace CEO Jean-Yves Le Gall said in post-launch comments from the
Spaceport.
Ariane guarantees sovereignty
Le Gall noted that Syracuse 3A is the latest military satellite orbited
by Arianespace, whose commercial launch services guarantee sovereignty
for European and international space programs. He added this important
reality should be remembered by program decision-makers when selecting
launch services for new systems in the telecommunications, Earth
observation and other sectors.
During tonight's launch, Ariane 5 released Syracuse 3A at approximately
29 min. into the mission, followed by the Galaxy 15 spacecraft's
deployment some 10 minutes later. Syracuse 3A rode in the upper position
on Ariane 5's SYLDA 5 deployment system, while Galaxy 15 was installed
below it.
Syracuse 3A is the initial satellite in France's new third-generation
Syracuse III system for secure military communications. With a mass at
liftoff of 3,725 kg., the satellite carries a 15-channel payload
operating in nine SHF (super high frequency) channels and six EHF
(extremely high frequency) channels.
Built by France's Alcatel Alenia Space using the company's Spacebus 4000
B3 satellite platform, Syracuse 3A has a design lifetime of 12 years,
and the platform will operate from an orbital position of 47 deg. East.
The Syracuse 3A spacecraft was ordered through the French DGA military
procurement agency.
The 20th satellite orbited Ariane for PanAmSat
PanAmSat's Galaxy 15 satellite was built by Orbital Sciences
Corporation, and will be placed in an orbital position of 133 deg. West.
Providing coverage over the 50 United States, the satellite's C-band
payload will distribute entertainment and information to cable
television systems, TV broadcast affiliates, direct-to-home TV
operators, Internet service providers, telecommunications companies and
corporations.
Galaxy 15 also has an L-band payload for the relay of Global Positioning
System (GPS) navigation to in-flight aircraft as part of the U.S.
Federal Aviation Administration's Geostationary Communications and
Control Segment (GCCS) program. The Galaxy 15 spacecraft design is based
on Orbital Sciences Corporation's Orbital Star 2 spacecraft bus, and it
had a liftoff mass of approximately 2,030 kg.
With today's launch Arianespace has orbited a total of 20 payloads for
PanAmSat.
The next Ariane 5 mission is scheduled for November 9, using a
heavy-lift Ariane 5 ECA version to carry Spaceway 2 for DirecTV of the
U.S. and Telkom 2 for PT Telkom Indonesia.
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