Category Archives: Galileo Space Segment

Galileo Space Segment

Launch of 4 new Galileo satellites

Liftoff of Ariane flight VA233An Ariane 5 rocket has launched four additional Galileo satellites, accelerating deployment of the new satellite navigation system.

The Ariane 5, operated by Arianespace, lifted off from Europe’s Spaceport in Kourou, French Guiana at 13:06 GMT (14:06 CET, 10:06 local time) carrying Galileo satellites 15–18. The first pair was released 3 hours 35 minutes and 44 seconds after liftoff, while the second separated 20 minutes later.

The Galileos are at their target altitude, after a flawless release from the new dispenser designed to handle four satellites. Read more…

[vid] Galileo System status

Next Thursday 17 November at 10.06 Kourou Time/14.06 CET an Ariane 5 will launch Galileo satellites for the first time. Equipped with a specially designed dispenser, the European launcher will deploy four satellites: Galileo Sat 15, 16, 17 and 18. This video explains the current status of the Galileo system.

 

Four new satellites to join Galileo constellation

VA 233. Quad satellites see spaceOn 17 November at 13:06 GMT (14:06 CET), a single Ariane 5 rocket is set to propel four Galileo satellites into orbit for the navigation constellation’s first-ever quadruple launch. Mission controllers are training intensively for the complex space delivery.

Ariane 5 will use a new payload dispenser to release four identical satellites into orbit in one go.

This will be the eighth Galileo launch, and will bring the number of satellites in space to 18. Once complete, the system will sport 24 operational satellites and a ground network to provide positioning, navigation and timing services. Read more…

Ariane 5 ready for first payload of Galileo satellites

ariane 5's bay hoisted for integrationThe initial Ariane 5 to loft four global positioning satellites for Europe’s Galileo navigation system has begun its build-up at the Spaceport in French Guiana for a milestone Arianespace mission in November.

This launcher is an Ariane 5 ES version that began the integration process begining of October, with the cryogenic core stage’s positioning over a mobile launch pad, followed by integration of the vehicle’s two solid propellant boosters.

Designated as Flight VA233 in Arianespace’s numbering system, the mission’s Ariane 5 was assembled inside the Spaceport’s Launcher Integration Building. During activity in the Spaceport’s Launcher Integration Building, the heavy-lift vehicle for Arianespace Flight VA233 underwent the assembly process that began by mating Ariane 5’s two solid propellant strap-on boosters with the main cryogenic stage. Read more…

Galileo satellites in eliptical orbit broadcasting navigation messages

The two Galileo satellites launched into elliptical orbits in August 2014, GSAT0201 using PRN code E18 and GSAT0202 using PRN code E14, started transmitting navigation messages for test purposes on 2016-08-05.

The Signal Health Status (SHS) flags are set to “Test” and the Data Validity Status (DVS) flags to WWG (working without guarantee). The satellites will not be included in the broadcast almanacs.

Users are requested to provide feedback on usage of GSAT0201 and GSAT0202 by contacting the help desk on the European GNSS Service Centre web portal.

Four Galileos reach Europe’s Spaceport ready for November launch

Galileo Quartet LandingA transatlantic flight delivered four Galileo satellites to French Guiana on Tuesday 6th September, in preparation for a shared launch this November by Ariane 5, the first for Europe’s satnav constellation.

The satellites’ odyssey began the previous day, when they left ESA’s technical centre in Noordwijk, the Netherlands, where every Galileo satellite is tested.

Each satellite was placed into protective containers before leaving the cleanroom environment of the test facility. These containers incorporate sophisticated environmental control, satellite monitoring systems and shock absorbers. Read more…

14 Galileo satellites now in orbit

Galileo launch 7 liftoffNamed for the astronomer who pinpointed Earth’s true position in the Solar System, the Galileo satellite navigation system that will help Europe find its way in the 21st century now has 14 satellites in orbit after 24th May double launch.

Galileos 13 and 14 lifted off together at 08:48 GMT (10:48 CEST, 05:48 local time) atop a Soyuz rocket from French Guiana.

This seventh Galileo launch went by the book: the first three Soyuz stages placed the satellites safely into low orbit, after which their Fregat upper stage hauled them the rest of the way into their target medium-altitude orbit. Read more…

Galileo liftoff replay – Soyuz VS15

Arianespace has successfully launched the 13th and 14th satellites of the Galileo constellation. The company’s second Soyuz launch of the year took place on May 24 at 5:48 am local time  (10:48 UTC) from the Guiana Space Center (CSG) in Kourou, French Guiana.

Today’s Soyuz success marks the 250th launch from the Guiana Space Center with its family of launchers. This total, composed of 229 Ariane flights, 15 with Soyuz and six liftoffs of Vega, confirms Arianespace’s operational performance over time for the benefit of all its clients.


 

Soyuz Flight VS15. Countdown and flight events

Liftoff is scheduled for Tuesday, May 24, 2016 at exactly:
05:48:43 a.m., Local time (French Guiana)
04:48:43 a.m., Washington, D.C.
08:48:43 a.m., UTC
10:48:43 a.m., Central European Time
11:48:43 p.m., Moscow

The 15th Soyuz launch from the Guiana Space Center (CSG) will place two new satellites for Europe’s Galileo satellites navigation System into circular orbit. The launcher will be carrying a total payload of 1,599 kg.

Countdown and flight
– 05H: Beginning of the meeting for launcher fueling authorization (BTR)
– 04H 30MN: Launch vehicle fueling begins
– 01H 35MN: End of fueling operations
– 01H 10MN: Mobile gantry withdrawal
– 00H 5MN 10S: Key on start
– 00H 5MN: Fregat transfer to onboard power supply
– 00H 2MN 25S: Upper composite umbilical drop-off command
– 00H 40S: Ground-onboard power transfer
– 00H 28S: Lower stage umbilical mast retraction
– 00H 16S: Ignition
– 00H 14S: Preliminary thrust level
– 00H 1S: Full thrust level
– 00:00: LIFTOFF
+ 00H 1MN 58S: Jettisoning of boosters
+ 00H 3MN 39S: Jettisoning of fairing
+ 00H 4MN 48S: Separation of central core (second stage)
+ 00H 9MN 24S: Separation of 3rd stage
+ 00H 10MN 24S: First Fregat burn
+ 00H 23MN 32S: Fregat shut down and beginning of ballistic phase
+ 03H 38MN 35S: Second Fregat burn
+ 03H 47MN 57S: Fregat shut down
+ 03H 47MN 57S: Galileo FOC-M5 SAT 13-14 separation (in Orbit Plane A)