Live-Übertragung Ariane-Start über HOTBIRD

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Hallo Nachtschwärmer,

der Ariane Start V157 wird über denn Satellitenbetreiber Eutelsat Live über
HOTBIRD 13.0° Ost auf 11.179 GHz H (SR 27500, FEC 3/4, VPID 205, APID 206)
auf dem Fucino Kanal übertragen.

Wer keine Empfangsmöglichkeit hat, kann auch über diese URL schauen.

 
Cool Danke...

Wann ist der Start von V158?
Gab es schon was genauers...zu V157 und dem Problem?


Grüsse
701
 
Das wird in dieser Woche entschieden (wenn der Bericht zu V157 fertig ist), momentan ist wegen des V157 Fehlstarts nicht klar wann Rosetta startet. Es soll aber noch im Januar sein.

Gruß
André
 
Hmmm...wenn das mit Rosetta auch schief geht...wird das das Ende vorerst mit der Esa...sein.

Die haben ganz schön Mum...das jetzt durchzuziehen...haben ja auch nen knappes Zeitfenster...

Bin mal gespannt...
 
Arianespace Press Release: Flight 157

Arianespace Flight 157:
The Inquiry Board Submits its Findings

Arianspace

Paris, January 7, 2003 - The Inquiry Board appointed to investigate
the failure of Flight 157 submitted its report to Arianespace on January
6, 2003. The board was named last December 13 to establish the
causes of the anomaly during the flight of an Ariane 5 ECA on the night
of December 11-12, 2002.

As requested, the board established the most probable cause for the
mission failure, examined possible consequences for the baseline
Ariane 5 launcher version, and recommended actions to correct the
problems that occurred during the Ariane 5 ECA flight

Arianespace has accepted all the recommendations of the board, and
will prepare an action plan by January 20 to enable a return to service of
the Ariane 5 ECA during the second half of 2003.

The Inquiry Board

Cause of the failure

A complete analysis of all measurements recorded during Flight 157
was carried out, along with a review of documentation concerning
production, quality and technical records for the Ariane 5 ECA, as well
as for all Ariane 5 flights to date. Also reviewed by the board was the
work of production and development teams in Europe.

The board's findings confirm that all preparatory and countdown
operations for Flight 157 went normally, as did the flight sequence until
the separation of the solid boosters.

The report of the Inquiry Board did identify the occurrence of a leak in
the of the Vulcain 2 nozzle's cooling circuit during this first flight phase,
followed by a critical overheating of the nozzle - which led to a loss of
its integrity.

This resulted in a major imbalance in the thrust of the Vulcain 2 engine
due to the nozzle's deterioration, leading to a loss of control over the
launcher's trajectory.

In conclusion, the most probable cause of the failure of Flight 157 was
the simultaneous occurrence of two aggravating factors:
The degraded thermal condition of the nozzle due to fissures in the
cooling tubes, and
Non-exhaustive definition of the loads to which the Vulcain 2 engine
is subjected during flight

The board also noted that it would be difficult to simulate these
additional loads during ground tests.

Consequences for the Ariane 5 Baseline

The designs of nozzles on the Ariane 5 Baseline's Vulcain 1 engine and
the Vulcain 2 engine for Ariane 5 ECA differ in two main ways:
The shape of the cooling tubes, which form the structure of the nozzle,
and
The technology of the nozzle's stiffeners.

After reviewing operating data from the Vulcain 1 engine's 12
successful flights, the Inquiry Board did not identify any weaknesses
concerning the functioning and resistance of its nozzle. The Inquiry
Board nevertheless requested an exhaustive examination of the
behavior of the Vulcain 1 engine nozzle, including precise modeling to
demonstrate the component's correct behavior during the flight. These
verifications currently are in progress.

Consequences for Ariane 5 ECA
The Inquiry Board requested that the following actions be taken:
Modification of the Vulcain 2 nozzle, taking into account experience
acquired with the Vulcain 1 engine nozzle,
Assessment of possibilities for simulation during ground tests of
loads observed during actual flight on the Vulcain 2 engine, and
Enhancing of the quality of flight equipment.

Consequences for Rosetta launch
In view of the specific factors involved in this flight, Arianespace has
decided to create a Review Board to make a decision on Tuesday,
January 14 regarding the mission's launch date.

Upcoming Arianespace launches

February 11: Ariane 4
Second half of February: an Ariane 5 Baseline launcher version
 
Re: Arianespace Press Release: Flight 157

Hi...

Ja hab schon auf Euro News gehört..das es an nem überhitztem Antrieb gelegen hat, und das ganze Triebwerk vom Arian 5+ überarbeitet werden muss. Die Last war schwerer als errechnet.

Dann kann ja Rosetta mit der normalen 5er bald hoch gehen...soll ja mitte Januar entschieden werden.

Wenn sie ESA echt mit zum mond will wie China..dann brauchen Sie aber ne neue VI er...

Brasilien und Indien schläft ja auch nicht...

Gute Nacht
 
Re: Arianespace Press Release: Flight 157

hallo!

Wann ist denn jetzt genau der nächste Start und wo kann ich zusehen?
 
Re: Arianespace Press Release: Flight 157

Am 14. Januar wird entschieden, wann der Start ist... also noch etwas Geduld...

Gruß
André
 
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