[ECHEC] Lancement Proton-M / Telkom 3 & Express MD2 - 6 août 2012

04.09.2012 / 8:39 Nesterov will work at the Centre. First deputy general director of the Khrunichev

The ex-CEO of the Khrunichev Center Vladimir Nesterov continue to work at the company in the position of first deputy general director and will oversee the project, "Angara", said on Tuesday the newspaper "Kommersant".
"Now consider the variant with the appointment of Vladimir Nesterov for the post of first deputy general director. Planned that his responsibility will be to work on a project launcher" Angara "," - said the source "b" in the outer office.
According to the official publication, Mr. Nesterov experience will be needed in this direction, because "It was during his creation of the" Angara "moved from the theoretical to the practical plane," RIA Novosti reported.

06.09.2012 / 09:30 Appointed Acting Director General of the Khrunichev center

Acting Director General of the Khrunichev Space Centre appointed Vasily Sychev, said on Wednesday, September 5, "Interfax" referring to the press service of the Khrunichev.

Spoiler:

20:50 10/09/2012MOSCOU, 10 septembre - RIA Novosti

L'Agence
fédérale spatiale russe (Roskosmos) rappellera l'ensemble du lot de
propulseurs Breeze-M dont faisait partie celui qui a causé l'échec d'un
tir de lanceur Proton-M en août, a annoncé lundi à Moscou le directeur
de l'agence Vladimir Popovkine.

"Nous avons décidé de rappeler et de vérifier l'ensemble du lot de
blocs d'accélération Breeze-M. Il ne s'agit pas d'un contrôle sélectif,
nous contrôlerons chaque accélérateur", a indiqué M.Popovkine.

Un lanceur russe Proton-M a placé deux satellites sur une orbite
erronée le 7 août dernier en raison d'un problème lié au bloc
d'accélération Breeze-M. Selon l'agence, le bloc s'est mis en marche à
l'heure prévue, mais ses moteurs se sont éteints sept secondes après, au
lieu des 18 minutes 5 secondes prévues.

"C'était une erreur de production. La commission d'enquête a formulé
plus de 20 recommandations permettant d'améliorer les techniques de
production des matériels spatiaux et les procédures d'essai au
cosmodrome", a ajouté le chef de Roskosmos.

Les tirs de Proton-M dotés de propulseurs Breeze-M reprendront à la mi-octobre, selon lui.

L'accident du 7 août s'est ajouté à la "série noire" de la branche
spatiale russe qui a provoqué la perte de plusieurs satellites et d'une
sonde en moins d'un an.

On September 12, the International Launch Services, ILS, (a marketing arm of GKNPTs Khrunichev) announced that a day earlier, Failure Review Oversight Board (FROB) had concluded the review of the Russian State Commission report concerning the root cause of the mission failure. According to the company's press-release, the FROB agreed with the Russian State Commission that the accident had been caused by a component of the pressurization system that was not manufactured to specifications. This caused a shutdown of the Briz-M's main engine by the flight control system onboard the upper stage, just seven seconds into the planned 18-minute and 5-second third burn, ILS said.

According to the company, the corrective action plan for all Briz M upper stages that was established by the Russian State Commission and GKNPTs Khrunichev was also approved by the FROB. This included stringent quality oversight of all rework procedures, testing, support equipment, and personnel, both at the Khrunichev production facilities and in Baikonur. In addition, ILS and Khrunichev were to develop specific initiatives to enhance the unified Quality Management System (QMS) that is installed and operating at all Khrunichev's production facilities.

"I would like to thank the nine representatives of ILS customers, two insurance underwriting representatives and independent outside subject experts who participated in the ILS FROB process," the ILS Vice President and Chief Technical Officer, John Palmé, was quoted as saying.

The return to flight corrective actions were to be completed prior to the Proton's next launch with the Intelsat-23 satellite for Intelsat S.A. of Luxembourg in mid-October. A Russian Federal mission was to follow, ILS announced.

"The Breeze-M upper stage failed to deliver sufficient thrust on the third of its planned ignitions because of a small metallic orifice inside a fuel line that was not manufactured according to specifications, McKenna said.

The component was built by Polyot of Omsk, Russia, in a manufacturing plant owned by Khrunichev Space Center of Moscow, which is Proton’s prime contractor and for the last several years has assembled most Proton subcontractors under its management.

McKenna said the defective pressurization-line component was built by Khrunichev until 2011, when it was moved to Polyot in 2011 as part of a general reorganization of Proton assembly.

The Polyot-built component has flown on several flights without failing, a fact that McKenna said helps explain why the defect, which he said was due to a misunderstanding at Polyot of how the part should be built, escaped Polyot and Krunichev review tests.

Given that the defect only occurred at certain pressure thresholds, McKenna said, it was not picked up as the component was tested with Khrunichev oversight.

The component will be removed from two Breeze-M upper stages awaiting integration at the Russian-run Baikonur Cosmodrome spaceport in Kazakhstan. The components will also be replaced at those Breeze-M stages at Khrunichev. It is not yet entirely clear, he said, how quickly replacement components can be qualified and installed into new Breeze-Ms, which is why the company will refrain from announcing a manifest for a few weeks"

a component of the pressurization system that was not manufactured to specifications. This caused a shutdown of the Briz-M's main engine by the flight control system onboard the upper stage, just seven seconds into the planned 18-minute and 5-second third burn, ILS said.

montmein69 a écrit:.

a component of the pressurization system that was not manufactured to specifications. This caused a shutdown of the Briz-M's main engine by the flight control system onboard the upper stage, just seven seconds into the planned 18-minute and 5-second third burn, ILS said.

Composant fabriqué par Krunitchev ? par un sous-traitant ?
Il y a du boulot pour mettre un contrôle qualité ... de qualité,... en place, vu que les défaillances du Briz-M ne datent pas d'hier.

Est-il prévu de réutiliser le Briz-M sur de nouvelles gammes de lanceurs ? Angara par exemple ?

Je suppose que l'ESA aura le souhait de mettre un peu son nez dans le système, s'il est prévu du Briz-M pour le lancement des deux missions constitutives d'Exo-Mars en 2016 et 2018 ?

yoann a écrit:Il ne fait vraiment pas bon voler sur proton dites donc :pale:

gaby-light a écrit:L'étage Briz-M aurait explosé le 16/10 entrainant bien sur des centaines voir des milliers) de débris...
http://spaceflightnow.com/news/n1210/23breezem/