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Galileo Dual Launch - 20 Oct 2011

 
 
Ed M.
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      09-12-2011, 04:14 PM
http://www.bbc.co.uk/news/science-environment-14886082

"To keep Galileo alive, EU member-states had to agree to fund the
entire project from the public purse. What should have cost European
taxpayers no more than 1.8bn euros will now probably cost them in
excess of 5bn euros.

The EU's continued commitment to the project despite severe budgetary
and management failings is based on the belief that huge returns to
the European economy will accrue from the investment."

http://finance.yahoo.com/currency-converter/

http://www.esa.int/esaNA/SEMD9MJ37SG_galileo_0.html

"9 September 2011
The first Galileo navigation satellite has arrived in Europe’s
Spaceport in French Guiana, ready to begin preparations for launch on
20 October. . . .

October’s launch will be historic: the first Soyuz launch from a
spaceport outside of Baikonur in Kazakhstan or Plesetsk in Russia.

French Guiana is much closer to the equator, so each launch will
benefit from Earth’s spin, increasing the maximum payload into
geostationary transfer orbit from 1.7 tonnes to 3 tonnes."

http://www.esa.int/esaNA/galileo.html

 
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claudegps
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      09-13-2011, 01:53 PM
On 12 Set, 18:14, "Ed M." <pat_n...@yahoo.com> wrote:
> http://www.bbc.co.uk/news/science-environment-14886082
>
> "To keep Galileo alive, EU member-states had to agree to fund the
> entire project from the public purse. What should have cost European
> taxpayers no more than 1.8bn euros will now probably cost them in
> excess of 5bn euros.
>
> The EU's continued commitment to the project despite severe budgetary
> and management failings is based on the belief that huge returns to
> the European economy will accrue from the investment."
>
> http://finance.yahoo.com/currency-converter/
>
> http://www.esa.int/esaNA/SEMD9MJ37SG_galileo_0.html
>
> "9 September 2011
> The first Galileo navigation satellite has arrived in Europe’s
> Spaceport in French Guiana, ready to begin preparations for launch on
> 20 October. . . .

[cut]
Are they going to launch even if the russian have suspended the Soyuz
launches after losing a Progress?
 
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Ed M.
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      09-13-2011, 11:52 PM
http://www.washingtonpost.com/world/...XPK_story.html

"ITAR-Tass cited the Roscosmos press service Tuesday as saying that
third-stage booster rockets from two Soyuz spacecraft that were have
to been launched from French Guiana have been returned to Russia for
inspection. The rockets are powered by the same RD-0110 engine that
malfunctioned on the Progress.

The planned launch of another two Soyuz carriers from the Guiana Space
Center this year will go ahead as their third-stage booster rockets
are powered by a different type of engine."

Doesn't identify payloads or dates for either Soyuz pair.


http://www.google.com/hostednews/afp...yfIYpsc2putr8g

"A Soyuz-U rocket carrying an unmanned cargo ship to the International
Space Station failed to reach orbit on August 24, instead crashing in
Siberia shortly after blast-off.

The first such failure since Soyuz rocket launches began in 1978
prompted Russia to ground its manned flight programme until the causes
of the accident were found and raised fresh doubts about the
reliability of its Soviet-era technology.

Soyuz rockets are used to launch the unmanned Progress cargo vehicles
as well as the Soyuz manned capsules going to the ISS.

Roskosmos also announced plans to send the first post-crash unmanned
cargo Progress ferry to the ISS on October 30."


Trying to follow the organization chart could be a challenge:

http://www.federalspace.ru/main.php?...1744&hl=guyana

"The official ceremony marking ESA’s handover of the Soyuz launch site
to Arianespace took place on May 7 at Europe’s Spaceport in French
Guiana, after the site was declared ready for the first flight and the
completion of a simulated launch campaign.

The French space agency, CNES, as prime contractor for the building
work, along with its European and Russian partners, has spent recent
months qualifying the site.

In March, the ‘acceptance review’ declared that it was ready for its
first rocket and at the same time CNES handed over the facilities to
ESA. The last step was ESA’s hand-over to Arianespace on 31
March. . . .

‘Soyuz at CSG’ – drawing on the French name of Centre Spatial Guyanais
– is an ESA programme with the participation of seven Member States.

The decision to develop the infrastructure to enable Soyuz to be
launched from French Guiana was of mutual interest to both Europe and
Russia. From a European perspective, closer cooperation with Russia
brings significant benefits, such as a reduction in the development
and production costs of new launcher systems, as well as opening the
door to other possible commercial partnerships in the future.

Construction of the Soyuz site began in February 2007, although
initial excavation and ground infrastructure work began in 2005 and
2006, respectively.

Russian staff arrived in French Guiana in mid-2008 to assemble the
launch table, mobile gantry, fuelling systems and test benches.

The first two Soyuz launchers arrived from Russia by sea in November
2009 to be assembled in the new preparation and integration building.

The launch site is almost identical to the other Soyuz sites in
Kazakhstan and Russia, although adapted to conform to European safety
regulations.

The most visible difference is the 45 m-tall mobile gantry, which
allows payloads to be installed on the launcher vertically on the
launch pad. Its internal movable work platforms provide access to the
Soyuz at various levels for checkout activities.

Soyuz fits neatly between the Ariane 5 and Vega launchers developed by
ESA. Ariane 5 meets the requirements for larger satellites and Vega
will complement this for smaller payloads.

Soyuz also introduces the exciting potential for upgrading the new
launch facility to allow manned launches to the International Space
Station from French Guiana. "
 
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claudegps
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      09-14-2011, 09:18 AM
On 14 Set, 01:52, "Ed M." <pat_n...@yahoo.com> wrote:
> http://www.washingtonpost.com/world/...nov-12-for-nex...



[cut]

Thanks
 
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claudegps
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      09-14-2011, 09:40 AM
On 14 Set, 01:52, "Ed M." <pat_n...@yahoo.com> wrote:
> http://www.washingtonpost.com/world/...nov-12-for-nex...
>
> "ITAR-Tass cited the Roscosmos press service Tuesday as saying that
> third-stage booster rockets from two Soyuz spacecraft that were have
> to been launched from French Guiana have been returned to Russia for
> inspection. The rockets are powered by the same RD-0110 engine that
> malfunctioned on the Progress.
>
> The planned launch of another two Soyuz carriers from the Guiana Space
> Center this year will go ahead as their third-stage booster rockets
> are powered by a different type of engine."
>
> Doesn't identify payloads or dates for either Soyuz pair.


here http://spaceflightnow.com/tracking/ says that the october 20
launch of Galileo IOV will be done using the Soyuz 2-1b rocket.
According to Wikipedia (http://en.wikipedia.org/wiki/Soyuz-2_%28rocket
%29) the 2-1b uses the upgrade RD-0124 engine.
In this case I think that the launch will not be delayed by the
investigation following the loss of the Progress in August.


 
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Ed M.
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      09-14-2011, 03:14 PM
There may be locations on the earth at which all 4 Galileo satellites
will be visible at the same time, but unlike GPS, those locations will
change from day to day.

The rationale for the GPS orbital periods:

http://www.gpsworld.com/gnss-system/...9890?page_id=6

"Green proposed 11-hour, 58-minute (sidereal synchronous) orbits that
gave about two hours of testing over the same United States test area
each day. , , , Because of the need for an extensive testing program
on an instrumented range, exact 8- or 12-hour orbits would have been
unsatisfactory, because they would continuously shift relative to the
Earth."

Although convenient for testing at a fixed location, the repeating
ground tracks result in a given satellite passing over the same speed
bumps, so to speak, over and over.

ftp://igscb.jpl.nasa.gov/igscb/resou...e_accepted.pdf

"In order to avoid the gravitational resonance associated with a 12
hour orbital period, the Galileo satellites will have a semi-major
axis of about 29600 km (altitude some 3000 km higher than GPS), and an
orbital period of 14 hr 5 min, giving a repeat of the ground track in
about 10 days, corresponding to 17 orbits."

Two-line element data for GIOVE-A and B show about 1.7 orbits per day
(next to last entry in 2nd line):

http://celestrak.com/NORAD/elements/galileo.txt

Galileo currently has a receiver network at 19 locations around the
world, with receivers from Septentrio, Leica, and Javad:

http://www.weblab.dlr.de/rbrt/GpsNav/CONGO/CONGO.html

http://www.iapg.bv.tum.de/190749--~i...nss~congo.html

And recently the IGS announced a 6 month experiment to begin in
February 2012:

http://igscb.jpl.nasa.gov/pipermail/...11/006451.html

ftp://igscb.jpl.nasa.gov/pub/resourc...ticipation.pdf
 
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