KSLV-1 (STSAT-2B) - 10.6.2010 [Echec]

patchfree a écrit:- le premier étage est russe mais le système de guidage, du moins sur le premier vol, est coréen

15:19 / / Ivan Cheberko
The cause of death of Korean missiles was a control unit, according to the NGO Energomash

The engine manufacturer fails to started this yesterday, South Korean rocket KSLV - Khimki NPO Energomash - states that the reason avrii were faults in the system of governance established by Koreans. This is a response to comments yesterday by Korean specialists assumption that the accident caused by a rocket incorrect operation of the first stage, produced by Russian enterprises. The representative GKNPTs Khrunichev, head developer of the first stage of the launch, hopes that situation will be clarified in the next few days.
Koreans accuse the Russian and Russian - Korean

"We are in case we are not guilty - have 'markers' in NGOs 'Energnomash' Russian engine worked normally, disruption of its work is not seen." Yesterday a source in "Roskosmos also asserted that up to 137 th of a second when had lost contact with the missile telemetry indicators point to a correct operation of the first stage of the rocket. At the same time, Korean experts immediately predplozhili that the blame for the accident the first stage of the rocket. The accident happened on the 137-th second - this time it is the first step. " I can not say for sure, but looks as though the problem in the first step - YTN television said an expert at Seoul Konkuk University, Ji-Woo Lee. - It was evident imperfect combustion.

Wait for the results - the maximum monthly

According to the GKNPTs them. Khrunichev Alexander Bobreneva, investigate the causes of such disasters may take up to one month: "If everything is clear, then the results will be faster." According Bobreneva, fragments of a rocket lift from the sea and their condition will be clear where it was terminated: "If the first step wrong, then the second stage and the heat shield fell not destroyed."
The first stage of the launcher KRK KSLV-I is actually the prototype of the first stage launch vehicle family "Angara". RD-191 were established NPO Energomash specifically for "Angara".

SEOUL, June 16 (Yonhap) -- South Korea will ask Russia for a third launch of a space rocket after the cause of last week's botched liftoff is fully determined, a government official said Wednesday.

The second locally assembled Naro-1, also called the Korea Space Launch Vehicle-1 (KSLV-1), lifted off from the Naro Space Center off the country's south coast at 5:01 p.m. Thursday but it blew up at an altitude of 70 kilometers, about 137 seconds after blastoff.

Deputy Minister for Science and Technology Kim Young-shik told reporters that Seoul plans to ask for another launch in accordance with the 2004 pact signed by the Korea Aerospace Research Institute (KARI) and Russia's Khrunichev State Research and Production Space Center.

"Under the pact, if either of the two planned launches is determined to have failed, KARI has the right to ask for another launch and Russia is technically bound to respect the request," the official said.

He said that while there is a "clause" that allows South Korea to withhold slightly more than US$10 million of the original $200 million it has to pay the Russian space agency for the Naro-1 project, there is every possibility that an understanding on a third launch can be reached.

Of the money that has to be given to Russia, roughly 95 percent has already been paid.

Kim said that while the 26-person Failure Review Board (FRB) made up of South Korea and Russian experts exchanged telemetry data that can shed light on why the rocket was lost little over two minutes into its flight, it will take time to pinpoint the cause. He said TV footage showing a series of explosions has been provided to Russian engineers.

The failed launch follows the first blastoff of the two-stage rocket in last August when the rocket reached orbit, but a malfunction in the fairing assembly made it impossible to deploy a 100-kilogram scientific satellite properly.

The deputy minister said that a second meeting of the FRB will be held in Moscow next month so experts can exchange further views, while a third meeting may take place in South Korea around August.

"After the third meeting, there is a chance that a rough idea of why the rocket was lost may emerge," he said.

Kim said that if the FRB officially determines the cause of last week's launch failure, South Korea will start preparations for another launch.

"In this case, Seoul will have to make another satellite, repair the launch pad and carry out other preparations for a launch, with Russia to foot the bill for another first-stage rocket," he said. The country already has one more second-stage rocket that can be used.

The ministry official, in addition, said despite criticism of a "rushed" launch, all pre-launch decisions reflected scientific assessments that checked the condition of the rocket, weather conditions, ground safety and other support systems.

Abnormal signals in the ground measurement system that allows ground controllers to determine the state of the rocket before it blasts off into space, and the accidental release of fire extinguishing fluids raised concerns about the safety of the rocket.

"Such decisions are made with the consent of Russian engineers who made the first stage rocket, with all members of the Naro management panel chaired by South Korea's vice science minister reaching a consensus on the launch," he pointed out.

Meanwhile, Cho Gwang-rae, a senior researcher of rocket development at KARI, said that preliminary data from the South Korean-made second-stage rocket showed the flight of the Naro-1 following a pre-planned correct trajectory and speed before contact was lost suddenly.

"Judging by this, the rocket engine seems to have functioned properly although there are plenty of other areas that might have caused troubles such as the fuel and oxidation tanks," he said.

The expert stressed that while allegations have been raised about problems in the second-stage rocket, no abnormal signals had been detected.

"KARI's part of the mission begins with the release of the fairing assembly that starts at 215 seconds into the flight, and since no signals were sent out and the second-stage rocket was in a 'wait mode,' the fault cannot lay with the second-stage rocket based on what we know at present," he stressed.

Cho said that the bulk of the debris from the rocket may have crashed about 400 kilometers from the launch pad at a depth of 200-400 meters. He said Russian engineers said they wanted to check the telemetry data first before any attempt is made to retrieve the destroyed rocket.

The ministry said that despite the latest setback Seoul will move forward with the development of a wholly indigenous rocket by 2020 that aims to place a 1.5 ton satellite into space.

KARI said the locally made rocket will connect four 75-ton thrust rockets and be made up of three stages. The combined 300-ton thrust is larger than the 140-ton thrust of the Naro-1.

South Korea had spent 502.5 billion won since 2002 on the KSLV project with Russian cooperation, with the money being used to make a state-of-the-art space launch center on Oenarodo Island.

Le crash de la fusée porteuse sud-coréenne KSLV-1 le 10 juin n'a pas été provoqué par une panne du premier étage de production russe, a déclaré vendredi aux journalistes Vitali Davydov, vice-directeur de l'Agence spatiale russe (Roskosmos).

tatiana13 a écrit:il y aurait donc des conséquences possibles sur la famille ANGARA si je comprends bien le post précédent!

nikolai39 a écrit:

tatiana13 a écrit:il y aurait donc des conséquences possibles sur la famille ANGARA si je comprends bien le post précédent!

Il y aura obligatoirement des conséquences pour Angara !

The Cause of S Korean Rocket Launch Failure to be Disclosed in Late June – Roscosmos Head
:: 18.06.2010

The cause of the crash which happened earlier this month during the launch of S Korean rocket KSLV with Russia-produced first stage is to be disclosed in late June, Roscosmos Head Anatoly Perminov told RIA Novosti questioned during the International Economical Forum in St. Petersburg.

"Joint accident investigation commission works now to find out the reason for KSLV crash. By the end of the month, the results will be disclosed”, Perminov said.

According to him, the preliminary results confirm that there was no failure of the first stage propulsion delivered by Russia.

"I am sure the accident was not caused by the Russian stage, neither during the first launch of KSLV, nor this time", Roscosmos Head added.

nikolai39 a écrit:Moi je suis pas d'accord avec toi Patch... Pour moi, le fait que le coupable proclame son innocence ne signifie pas qu'il est innocent.

Tu connais les Russes aussi bien que moi : ils ne reconnaîtraient jamais que c'est d'eux que provient la défaillance.

MOSCOW, July 15 - RIA Novosti. Poor execution of South Korean rocket KSLV, which was an engine first-stage Russian production will not affect the timing of the establishment of a new Russian carrier rocket Angara told reporters the head of the Center Khrunichev Vladimir Nesterov .

Crash at startup Korean rocket KSLV-1 June 10 could happen due to premature engine starting the second stage. As previously reported , at 137 seconds of flight means of ground control suddenly stopped receiving telemetric information, And video materials filmed by Korean broadcasters at this point, were seen several outbreaks. Perhaps this premature to fire the engines of the second stage or abnormal triggered pyrotechnic separation system of the first stage of the second .

"Joint Russian -Korean commission continues to work to clarify the reasons for the unsuccessful launch. While no anomalies in the first stage was not found. Unsuccessful launch in South Korea will not affect the terms of creation of "Angara "- Nesterov said .

In 1994, Russia 's leading space companies had bid for the establishment of the planned space launch complex heavy class , which won the project of a space rocket complex "Angara ", presented by the Center for Khrunichev , a feature which is the development of a "family" launch vehicle "Angara" based on VPN -1 (universal missile modules ) for its first and second stages and VPN -2 for the third stage .

patchfree a écrit:La commission continue son enquête. Selon Nestérov le problème provient soit de l'allumage prématuré du premier étage,

SEOUL, 15 août (Yonhap) -- La Corée du Sud et la Russie ont fait part de leur intention d’effectuer le troisième lancement de la fusée Naro-1 l’année prochaine après avoir confirmé officiellement que le lancement du 10 juin dernier a échoué, selon le gouvernement ce dimanche.


Le ministère de l’Education, de la Science et de la Technologie a fait savoir que les experts des deux pays qui étaient présents à la réunion de la commission d’enquête du FRB (Failure Review Board) la semaine dernière sont tombés d’accord pour dire que le lancement de la fusée de juin a été un échec.


Les experts ont ajouté qu’ils travailleraient ensemble pour trouver la cause de cet échec et pour procéder aux modifications nécessaires.


«Parce qu’il faut du temps pour déterminer la cause et pour effectuer les changements sur la fusée elle-même, le prochain lancement aura probablement lieu en 2011», a déclaré Yoo Guk-hee, le chef de la section développement spatial du ministère.


Il a précisé que, en raison du fait que l’enquête est encore en cours, aucun détail ne pouvait être donné par les ingénieurs pour le moment.


Treize experts de chaque pays avaient pris part à la réunion qui s’est déroulée à l’Institut de recherche aérospatiale coréen (KARI), à Daejon, à 160 km au sud de Séoul, pour trouver les raisons pour lesquelles le contact a été perdu avec la fusée de 140 tonnes il y a un peu plus de deux mois.

On the Commission on launch rocket KSLV-1.

16/08/2010

Last week in South Korea, the third meeting of the Russian-Korean commission, which discussed issues related to the failed launch in June this year launch vehicle KSLV-1.

As a result, the Commission concluded on the need to conduct additional tests to identify the causes of the accident.

The possibility of a third start at the commission meeting was not discussed.

Few clarify the situation with explosive bolts .
As I expected , media several misunderstood the issue. And it is this. Looking for the cause of ENM , the Korean side suggested that one possible reason that led to the accident, could be the spontaneous firing explosive bolts as a result of the induced electromagnetic field from the Korean high-voltage systems. To test this version of the proposed conduct additional tests of separation systems for electromagnetic compatibility with Korean high-voltage systems.
In turn , the Korean side will have to test its high-voltage systems in conditions of low atmospheric pressure. The features of such systems under conditions close to vacuum , have already been discussed in the forum about the accident KSLV .
It is clear that until the completion of these and possibly other tests and trials, speak on the third start-up prematurely.

TAR-TASS, 25/10 09:32 CET
Russia and South Korea have agreed on the third rocket launch "Naro-1, which should be put into orbit a satellite weighing 100 kg

SEOUL, Oct. 25. / Spetskorr.ITAR-Tass hola and Vladimir kutah. Russia and South Korea agreed to implement the third rocket launch "Naro-1, which should take into Earth orbit research satellite weighing 100 kg. This was announced today in a joint exclusive interview with ITAR-TASS news agency and South Korean newspaper, Jungang Ilbo, Minister of Education, Science and technologies RK Lee Chu Ho. It was his first meeting with foreign journalists since taking office.

A joint project of ITAR-TASS news agency and newspaper "Jungang Ilbo carried out within the framework of the Korean-Russian dialogue, which is timed to celebrate this year the 20 th anniversary of the establishment between Russia and South Korea's diplomatic relations and the forthcoming visit to Seoul, President Dmitry Medvedev.

Talking about the next launch rocket Naro-1 ", the minister stressed that "we are interested in the speedy implementation of the third attempt and now needs as quickly as possible to issue all the documents to avoid any misunderstanding," the minister said.

The first attempt to launch a scientific satellite with the help of the Korean system of space launch / KSLV-1 or "Naro-1 / s first stage of Russian development was unsuccessful due to the fact that from the second stage, which created the Korean experts are not separated one of the two fairings weighing 300 kg. Cause the second explosion missile experts now define the space between the two countries. According to the Korean side it happened during the first / then there is the Russian / stage. As claimed by Russian officials, Russia's liquid engine worked normally. -0-H ~