Roscosmos said the reason for the unsuccessful launch from the East

© RIA Novosti / Ramil to Setdiscoverable in fotomonster of the carrier rocket Soyuz 2.1 b with the spacecraft meteor No. 2-1 from the cosmodrome East. 28 Nov 2017Roscosmos said the reason for the unsuccessful launch from the East© RIA Novosti / Ramil to Setdiscoverable the image Bank

The first Deputy head of Roscosmos Alexander Ivanov called the cause of the unsuccessful launch from the Vostochny cosmodrome rocket «Soyuz» with 19 satellites.

According to him, we are talking about the «imperfection of the software algorithms of the control system upper stage «Fregat» and incorrect azimuths start-up. This led to the fact that the orientation of the unit after separation from the launch vehicle identified correctly.

«However, the existing mathematical modeling methods could not identify these errors,» — said Ivanov told reporters.

The Commission is a state Corporation under the leadership of the Deputy Director, the Institute completed its investigation on 11 December. According to her results, any comments to the spaceport was not. In addition, «Union», «Frigate» and its component parts, and the propulsion system worked according to the specified algorithm.

However, continued the first Deputy head of the Roscosmos, because of the combination of these reasons «at the moment of separation of the booster from the carrier error in the rotation was 363 degrees». The frigate began to turn, but not in time to do it, because the involved boosters. It has given impetus for an incorrectly oriented unit and the Frigate began to fall.

«Here ran into the difference of the two schools. NPO Automation produces control system of the launch vehicle, and the school npcap control system of the booster units. <…> The discrepancy founded 20 years ago,» — said Ivanov.

He cited as an example the complex «sea launch», which does not have a constant azimuth of the start, «came the barge, the wind blows, the barge rises against the wind, she changes the azimuth of the start». However, such out-of-sync occurs, because the rocket «Zenit» count the azimuth the same as the boosters «DM» to be used with them.

These problems have no rockets «proton», as well as all combat missiles.

When you first start from the East payload is also displayed on a sun-synchronous orbit. The accident was avoided, as the rocket «Soyuz-2.1 a» is used upper stage «Volga».

As noted by the head of Roscosmos, Igor Komarov, analysis of the incident led the Commission to detect problems that were not previously investigated.

«We are faced not even that turned the sensors of angular velocity, and that messed up the solder when welding, and not even negligence and lack of discipline in the workplace, and with features of the software algorithm, which was compiled about 20 years ago, and has been successfully applied 62 times while working the upper stage «Fregat» other cosmodrome», — he stated.

The feature of this trigger in conjunction Soyuz — Fregat — Baikonur East, said Komarov.

Rocket «Soyuz-2.1 b» with the upper stage «Fregat» and 19 satellites were launched on 28 November and staff has reached an intermediate orbit. But then failed to communicate with the satellite «meteor-M» №2-1, which was supposed to separate first. The devices have reached the target orbit and fell into the Atlantic ocean.

Roscosmos said the reason for the unsuccessful launch from the East© Photo : East Roskomoboronprom

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