Experts continue to investigate the cause of lost Russian cargo spacecraft “Progress”, launched into space on April 28. According to them, until confirmed two assumptions – the failure occurred at the stage of separating the vehicle from the third stage of the carrier rocket “Soyuz”, while failure could cause an explosion, according to “Interfax” , citing a source in the space industry close to the commission for investigation of emergency in orbit.
The fact that the failure occurred at the stage of the third stage, reported shortly after the launch. Experts PCO reported that the two-stage rocket “Soyuz” worked normally, but on the stage of the third stage failed, causing the rapid rotation of the spacecraft “Progress”. Later, a Version blast . It was also reported that found the US Air Force Space Center around the wreckage of the truck can be a result of the impact of the ship and the third stage of the rocket in the moment of separation. This was announced on the eve RIA “Novosti” of the Russian Academy of Cosmonautics Tsiolkovsky, chief editor of “Space News” Igor Marinin.
Experts analyzed the orbit of the Russian Space Agency fragments found near the freighter. According to one of the pre-release “cloud” fragments could be formed as a result of “explosive effect”, a source said Thursday the agency “Interfax”.
According to him, experts are now busy identifying the wreckage, as well as an analysis of their orbits. Most likely, the explosion occurred at the time of separation of the ship from the third stage, the source added.
In the study of the parameters of the orbit 15 of the largest fragments of experts drew attention to the large height variation. According to American data, they are at altitudes from 170 km to 370 km and an apogee of 130 to 180 km – at perigee.
“Given this, and the fact that the ship” Progress “was found about 30-40 kilometers above the calculated orbit and thus strongly rotated around its axis, we can confidently say that the separation spacecraft from the third stage of the launch vehicle was something like an explosion, “- a spokesman said.
According to him, the information available is not enough to say for sure that it exploded. “With the accumulation of the necessary information will be carried out mathematical modeling of all possible processes occurring in orbit. It will then select the most likely version” – the spokesman said.
“Progress” was lost due to a failure in the third stage of the rocket “Soyuz”
Source Tass in Roskosmos earlier reported that the cargo ship from a third stage carrier takes nine minutes after launch. Later, experts reported that over 1.5 seconds before the truck separating from the rocket stopped coming to his telemetry. The first deputy head of the Russian Federal Space Agency Alexander Ivanov then suggested that the cause of the accident could be an emergency situation at the time of the separation of the rocket and spacecraft, wrote “Rossiyskaya Gazeta” .
Because of the failure of the ship was in orbit above the settlement. Furthermore, there was a strong its rotation around its axis – a speed of about 90 degrees per second. From the Earth repeatedly sends a command to switch the main engine of “progress”, but it does not load.
Later, the US military discovered in orbit near the “progress” and the third-stage rocket “Soyuz” several tens of debris, which presumably could be fragments of the ship or cargo rockets. Academician of the Russian Academy of Cosmonautics Tsiolkovsky, Yuri Karash told “Interfax” that if the ship started to fly off the wreckage, he likely suffered serious effects from either inside or outside. In the first case, this means that the vehicle exploded. “Most likely, it just exploded,” – said Karash.
The fragments found in space found elements of the “Union”
29 April Roscosmos announced preliminary results of the analysis
the situation with the failed launch of “progress”. According to them, “in
additional testing of systems and components ship 29
April 2015 established failures of individual components and assemblies
cargo vehicle and found no
tightness highways propulsion unit “. It
recorded outflow of gas from the pipelines of the ship.
According to the Russian Federal Space Agency, the ship is located at an altitude of 270 km
apogee and perigee of 190 km. The ship and the third stage of the rocket were in
orbit launch approximately 30 kilometers apart.
Commenting on information about detected near the “progress” 44
fragments, the first deputy head of the Russian Federal Space Agency Alexander Ivanov
did not rule out that some of these fragments – “are elements of design,
which cleanly away from the third stage at the time of separation from the ship
- Pirotolkateli, body pushers, springs “.
He said that” at the moment of such statistics we have, but
when we get updated information, we will verify. “” As long as say
clearly, it is the wreckage of something, you can not “- said Ivanov.
At a briefing at the Russian Space Agency announced that the Commission
investigate the causes of the emergency start “progress” should present
its conclusions of 13 May, when the state commission should be to make a decision
on the possibility of launching manned spacecraft with the help of
rocket “Soyuz-FG”. The launch is scheduled for May 26 from Baikonur.
The ship “Progress M-27M” commit uncontrollable descent from orbit. According to specialists Roscosmos, the ship must enter the dense layers
the atmosphere and burn up in the period from 5 to 7 May. Forecast of a
point on the globe that happens, it will be only two days before
fall. However, according to experts, the wreckage of the space of the truck before it reached the Earth and burn up in the dense layers of the atmosphere.
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