[Echec] Lancement Proton-M / GLONASS-M - 5 décembre 2010

Fuel overload has been singled out as the prime reason for Sunday’s failed launch

gaby-light a écrit:Je viens de tomber sur ce lien qui dit que le problème viendrait d'une surcharge de carburant.

Fuel overload has been singled out as the prime reason for Sunday’s failed launch

http://english.ruvr.ru/2010/12/07/36348739.html

Ce n'est pas du tout le même probleme que cité precedement alors je ne sais pas si cette source est fiable...

patchfree a écrit:C'était le dernier lancement de Glonass-M par la Proton, puisque les suivants devaient être désormais envoyés un à un par une Soyouz/Fregat...

patchfree a écrit:J'ai rectifié! J'ai lu trop vite la liste des lancements prévus... Merci Nikolaï.

"Glonass-M # 42 is almost ready at Reshetnev ISS. It’s testing is likely to be completed in February. After coordination with the Ministry of Defense, we would be able to schedule the launch by Soyuz with Fregat upper stage, as there is no limitation applied to this rocket”, Perminov said, adding that the launch could be slated for March.

montmein69 a écrit:S'il y a un arrêt - plus ou moins long - des tirs de Proton qui était décidé suite à cet échec, ils lanceraient les satellites GLONASS avec la Soyouz :

"Glonass-M # 42 is almost ready at Reshetnev ISS. It’s testing is likely to be completed in February. After coordination with the Ministry of Defense, we would be able to schedule the launch by Soyuz with Fregat upper stage, as there is no limitation applied to this rocket”, Perminov said, adding that the launch could be slated for March.

nikolai39 a écrit:Il faut relativiser.
Comme je l'ai dit plus haut, c'est le premier échec GLONASS depuis 1988...

In the unsuccessful launch of three satellites Glonass guilt booster is not
:: 10/12/2010

Carrier rocket Proton-M is not the cause of an unsuccessful launch of three satellites Glonass-M "on December 5, told Interfax-AVN director general of the State Space Scientific Production Center for them. Khrunichev VE Nesterov.
"The Rocket" Proton "laundered" all ", - said Vladimir Nesterov, answering the question whether the cause of accidental missile launch.
Information that Proton is not to blame for the unsuccessful start on Sunday also confirmed today the press service of Russian Federal Space Agency director general TsNIIMash GG Raykunov, head of the interdepartmental commission investigating the causes of accidental launch satellites Glonass-M.

tatiana13 a écrit:

patchfree a écrit:La Proton n'est pas en cause.

donc les prochains tirs de Proton pourront leur cours normal

The reason for the overflow of fuel in the upper stage Block DM-3 - an error in the documents

17:16 10/12/2010

MOSCOW, December 10 - RIA Novosti, Alexander Kovalev. Exceeding standards in the Gulf of fuel upper stage Block DM-3, which put into orbit three satellites Glonass-M " most likely due to a bug in the documentation, but operational calculations, ran the rocket is not guilty. , Told RIA Novosti on Friday the head of the interdepartmental commission of inquiry into the causes of the incident, General Director Gennady TsNIIMash Raykunov.

"According to preliminary data, was done incorrectly calculated the amount of fuel refueled. It is possible that an error has crept in the documentation prepared by RSC Energia." Crew, responsible for filling the upper stage is not to blame, they simply acted according to the documentation received, "- said Raykunov.

He clarified that the "human factor", according to preliminary data, could affect only the calculation of operating a gas documentation. The information about the problem with the sensor fuel control until a very preliminary nature, and not explicitly confirmed.

"The work of the interdepartmental commission has not been completed. All the reasons will necessarily be checked and adjusted, so long as all the above is only preliminary in nature", - stressed Raykunov.

Carrier rocket Proton-M satellites with three Glonass-M ", completes the Russian global navigation system GLONASS, was launched on Sunday from Baikonur. However, the satellite was put into orbit were not - the upper stage with the satellite fell into the Pacific Ocean in 1,5 thousand kilometers northwest of Honolulu.

http://www.rian.ru/science/20101210/306994864.html

montmein69 a écrit:
- on a évoqué (mais est-ce la bonne valeur ? ) un excédent d'environ 2 m³ d'ergols. Soit grosso-modo 1600 kg d'ergols en trop .Ce qui est certes une sur-masse non négligeable. Mais alors pourquoi avoir fabriqué des réservoirs avec une telle capacité ?

nikolai39 a écrit:D'après ce que j'ai compris, le problème n'est pas que le Bloc DM-03 n'a pas été assez puissant.
Le problème, c'est que l'ordinateur de bord avait des mauvais paramètres, et il a donc donné les mauvais ordres, et le tout s'est retrouvé dans le Pacifique.
Je pense que le problème aurait été le même si le Bloc DM-03 avait été sous-rempli.

tatiana13 a écrit:Cause de lancement accidentel "Proton" était une erreur dans les calculs effectués par les développeurs de l'étage supérieur du RSC Energia

an error was made in calculating of rocket fuel components for the DM booster unit .../cut/....the technical failure might have merged with a mistake in Energia's documentation.