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Post Info TOPIC: Syracuse 3A
Blobrana


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Galaxy-15 Satellite
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Two spacecraft are about to begin an unusual orbital dance above the Pacific Ocean to try to evade the interference from a third, failed satellite.
Control was lost of Intelsat's Galaxy-15 platform in April. It will not take commands from the ground and is in a drift towards neighbouring spacecraft.
The nearest, AMC-11, will now be eased out of its path, and some of its TV channels moved to a partner platform.
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Blobrana


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RE: Syracuse 3A
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Alcatel Alenia Space today announced the acceptance by the French Defence Procurement Agency (DGA) of the Syracuse 3 space borne military communications system. Alenia Alenia Space has qualified the Syracuse 3 system two months after the Syracuse 3A satellite launch. Initial operation of the satellite telecommunications capabilities began mid-November.

The full-scale system tests used the Syracuse 3A satellite, the control and management centre at Maisons Laffitte, the France South ground station in Bram, and other armed forces ground stations in France. System performance tests, carried out by DGA's technical experts and coordinated by CELAR (electronic warfare engineering centre), met all specifications.

The qualification system review was successfully held on December 7, 2005, enabling DGA to deliver the Syracuse 3 system to the French armed forces by the end of the year, as committed.

"The Syracuse program has been both a major technical challenge, and above all a highly rich and unifying experience for our teams. We are particularly proud of our ability to keep pace with the very tight deadlines for all phases of this program, from the launch of Syracuse 3A to today's qualification. Furthermore, our teams continue to be heavily involved in the integration of Syracuse 3B, scheduled for launch in mid-2006" - Pascale Sourisse, President and CEO of Alcatel Alenia Space.

Syracuse 3 is a cutting-edge military satcom system, designed to meet the needs of France and allied armed forces for the next ten years. NATO's C3 agency recently chose the Syracuse system, together with Skynet (Britain) and Sicral (Italy), to provide SHF (super high frequency) communications for member countries, within the scope of the post-2000 NATO Satcom program.

Alcatel Alenia Space is the leading European supplier of satellite-based solutions for defence.

Source

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Blobrana


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Following record time orbital positioning, the Syracuse 3A military communications satellite passed all satellite in orbit tests that began on October 22. This test phase, just a month after its launch, culminated in the orbital test review, which the satellite passed with flying colours.

The test phase of the satellite was carried out by the France Sud military ground station at Bram, 80 kilometres from Toulouse. The satellite itself was controlled from the military operations centre at Maisons-Laffitte near Paris.

"We are particularly satisfied that we were able to meet our commitment, and allow the DGA to start using the Syracuse 3A prior to total deployment of the system. We knew that the DGA was very keen to deploy this capacity, and we did our utmost to meet the challenge of completing all positioning operations and in-orbit tests under very tight deadlines. We were able to meet this challenge thanks to an all-out effort by our technical staff, working closely with their counterparts from the DGA. Once again, we saw how this major European defense program is a rallying point to spur the motivation and commitment of everybody involved" - Pascale Sourisse, President and CEO of Alcatel Alenia Space.

The next stage will last about a month, and involve system validation tests, leading to the system qualification review on December 13, 2005.


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Blobrana


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Blobrana


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Ariane 5G Flight 168
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The successful launch of Flight 168, an Ariane 5G with a double payload, took place on Thursday 13 October 2005 from Europe's Spaceport in Kourou, French Guiana (early Friday morning 14 October 2005 CEST)

On arriving at orbital injection, around 26 minutes after launch, the Ariane 5 was at an altitude of about 1560 km and travelling at approximately 8633 metres a second. Syracuse 3A was the first satellite to be released, followed approximately 10 minutes later by the Galaxy 15. Both satellites have been placed in the targeted geostationary transfer orbit with very high precision.

Flight 168 is the 23rd Ariane 5 launch.


ELA-3 with Ariane 5 moving into
launch zone
Credits: ESA - CNES - ARIANESPACE/SOV

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Blobrana


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Ariane 5 Launch
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Arianespace press release:

During the night of October 13 to 14, Arianespace placed two satellites into geostationary transfer orbit: the Syracuse 3A communications satellite for the French Ministry of Defence, and the Galaxy 15 high-definition TV satellite for the private American satcom operator PanAmSat.

19th successful Ariane 5G launch

Today's launch was the 19th successful mission for the standard Ariane 5G ("Generic") launcher, carrying on the successful launch last August of two missions only three days apart, an Ariane 5 from the Guiana Space Centre and a Soyuz from the Baikonur Cosmodrome. This launch also provides further confirmation that the Arianespace launch family provides the best match with current operator requirements.

Military and civil telecoms

Syracuse 3A is the 24th military payload for the European launcher. Following the launch of Helios IIA in December 2004, Ariane 5 once again amply demonstrates its ability to handle the full spectrum of missions, in particular government launches for European defence.

Galaxy 15 is the 20th PanAmSat satellite to be launched by Arianespace's family of launch vehicles. The world's leading private satcom operator, PanAmSat is one of Arianespace's longest-standing customers, reaching back to the first Ariane 4 launch in June 1988.

Today, Ariane 5 is the only commercial launcher in service capable of simultaneously launching two payloads.

The Ariane 5 Syracuse 3A & Galaxy 15 mission at a glance

The mission was carried out by an Ariane 5G launcher from Europe's Spaceport in Kourou, French Guiana. Lift-off was on Thursday, October 13 at 7:32 pm local time in Kourou (6:32 pm in Washington, DC, 22:32 GMT and on Friday, October 14 at 12:32 am in Paris).

Provisional parameters at injection of the Ariane 5's storable propellant upper stage (EPS) were:
Perigee: 564.7km for a target of 564.7 km (± 3 km)
Apogee: 35,853 km for a target of 35,866 km (± 160 km)
Inclination: 35,853 km for a target of 35,866 km (± 0.06 °)

Syracuse 3A is the first satellite in France's new third-generation Syracuse III system, dedicated to secure military communications. French defence procurement agency DGA (Délégation Générale pour l'Armement), part of the MoD, is in charge of this program, with management provided by the Observation, Telecommunications and Information Programs Department (SPOTI).

Alcatel Alenia Space and Thales Communications are joint prime contractors for the program. The Syracuse 3A satellite is designed by Alcatel Alenia Space, while Thales Communications is in charge of the ground segment, comprising some 600 networked ground stations. The satellite weighed about 3,700 kg at liftoff.

Galaxy 15, weighing approximately 2,000 kg at liftoff, is the third new-generation model that PanAmSat has ordered from Orbital Sciences Corporation to provide greater flexibility and availability to its customers.

Fitted with 28 C-band transponders, Galaxy 15 will deliver digital video programming, high-definition television (HDTV), video on demand (VOD) and HP (high priority) TV broadcasting services throughout the United States. The satellite will also have an L-band transponder to provide GPS services to U.S. commercial aircraft.

-- Edited by Blobrana at 02:21, 2005-10-14

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Blobrana


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The Syracuse 3A and GALAXY 15 satellite duel launch was a complete success.

Orbits are acquired.
Perigee altitude 565 km
Apogee altitude 35,863 km at injection
Inclination 7° degrees

Images of the launch will be released shortly by Arianespace.


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Blobrana


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RE: Syracuse 3A
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T+ 39 minutes 49 s Separation of GALAXY 15 satellite

All is normal.

Separation confirmed...

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Blobrana


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Date:
Ariane 5 Launch
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coming up to separation of GALAXY 15 satellite

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Blobrana


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RE: Syracuse 3A
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Confirmed separation.

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