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Raumfahrt - Soyuz rocket carrying 19 satellites, including 10 for Spire Global, fails after upper-stage malfunction

30.11.2017

soyuz-21b-nov-28-2017-launch-r

The Soyuz-2-1.b rocket launched Nov. 28 was the second mission from Russia’s new Far East Vostochny Cosmodrome. The mission carried the 2,750-kilogram Meteor-M No. 2-1 meteorological satellite and 18 smallsats. The co-passengers included 10 4.5-kilogram Lemur-2 satellites owned by Spire Global and Telesat Canada’s 70-kilogram LEO Vantage prototype broadband communications satellite. Credit: Roscosmos

UPDATE:This story was updated on Nov. 28 and 29 to reflect information about the insurance on the launch, and to add an assessment from an industry official on the failure’s impact on upcoming missions.

PARIS — A Russian Soyuz rocket carrying a Russian meteorological satelilte and 18 smaller satellites, including 10 for Spire Global and a technology demonstrator satellite for Telesat that would reserve radio frequencies failed to reach orbit on Nov. 28 in what initial reports said was an erroneous command loaded on the rocket’s upper stage.

The Russian space agency, Roscosmos, had no formal assessment of what went wrong in the early hours after the Soyuz-2-1b rocket lifted off from Russia’s new Vostochny Cosmodrome in eastern Russia. It issued a terse statement four hours after the launch saying only that the 2,750-kilogram Meteor-M No. 2-1 satellite, which was the principal payload, had been placed into a wrong orbit and was not communicating.

The Meteor satellite was insured for 2.59 billion Russian rubles, or $44.3 million at current exchange rates. The Spire satellites were not insured, industry officials said.

A Russian industry official urged caution before blaming the Fregat stage, saying if the stage was badly oriented at separation it would have been because of a problem with a lower stage of the Soyuz. “The Fregat boosts in the direction given by the launcherd,” said the official, who is not associated with Fregat builder Lavochkin. “It’s possible the Fregat ignition didn’t occur. We’ll need to see more data before blaming Fregat.”

The official said that depending on the initial telemetry data, the launch of a Zenit rocket with a Fregat upper stage carrying the Angosat telecommunications satellite for Angola, initially set for early December from Russia’s Baikonur Cosmodrome but recently shifted to late December, might suffer further delays. Similarly, a Soyuz-Fregat launch from Baikonur of two Russian Kanopus Earth observation satellites, set for Dec. 22, could be put on hold pending results of the investigation.

The Nov. 28 launch was the second Soyuz mission from Vostochny, following an inaugural flight in April 2016.

A European industry official with knowledge of the launch said the initial reports were that the rocket’s Fregat upper stage was loaded with an erroneous command that caused it to fail after separation from the Soyuz vehicle.

Roscosmos said the lower three stages of the Soyuz vehicle performed as expected, with the Fregat stage separating some nine minutes and 23 seconds after liftoff.

The Fregat was expected to perform a complicated mission including seven reignitions over five hours to place the Meteor and 18 small satellites into different orbits of between 600 and 1,000 kilometers in altitude. Fregat then would have been sent on a destructive reentry path, with its remaining pieces to land in the Pacific Ocean.

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The Soyuz rocket’s fairing shows many of the logos of the lost satellites. Credit: German Orbital Systems

The 18 small satellites on board had secured their places on the mission via GK Launch Services of Russia, the company that has been given responsibility for commercializing Soyuz launches from Russian spaceports.

In a statement, GK Launch Services said it was still analyzing the situation and awaiting clarification from Roscosmos.

San Francisco-based Spire, which is building a business using a large constellation of low-orbiting satellites for maritime tracking and commercial meteorology, had 10 4.5-kilogram Lemur-2 spacecraft on board.

Canada-based Telesat placed the first of two prototype LEO Vantage broadband telecommunications satellites on the vehicle. The 70-kilogram satellite, built under the general system management of SSL by the University of Toronto Institute for Space Studies (UTIAS), is one of two prototypes designed to prove Telesat’s chosen broadband constellation technology choices and to reserve the radio spectrum with the International Telecommunication Union.

A second Telesat prototype, built by Surrey Satellite Technology Ltd. of Britain, is scheduled for launch in December or January aboard an Indian PSLV rocket. Under ITU rules, Telesat need launch and operate only one satellite to register its full constellation as having been brought into use.

Telesat purchased insurance covering both satellites. There is no claim unless both are lost.

Also on board were the AISSat-2 maritime-tracking satellite for the Norwegian Space Centre; the 22-kilogram IDEA OSG-1 orbital debris-monitoring satellite for Astroscale Japan Inc.; the 11-kilogram Corvus-BC-1 and BC-2 Earth observation satellites, owned by AstroDigital US Inc.; and the 3-kilogram D-Star One amateur-radio satellite for German Orbital Systems GmbH.

The Russian Soyuz and Indian PSLV rockets are the most-popular launch vehicles for the fast-growing cubesat sector, which includes government, commercial and university-research satellites. The PSLV failed in August after its fairing did not separate.

Quelle: Space Intel Report

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Update: 30.11.2017

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Fragments of Soyuz-2.1b rocket’s first stage found in Russia's east 

It was reported earlier that the rocket’s fragments after its launch should have fallen at the boundary of the Zeya and Tynda districts

Roscosmos specialists have found three fragments of the first stage of the Soyuz-2.1b carrier rocket in the north of the Amur Region in the Russian Far East, local district head Andrei Lozhechkin told TASS on Wednesday.

The carrier rocket blasted off from the Vostochny space center on Tuesday.

"Roscosmos specialists who surveyed from aboard a Mi-8 helicopter the district of the probable fall of the first stage, found its three fragments on the territory of the Tynda district," head of the Zeya district Lozhechkin said.

The fragments that were found were cut into parts and delivered to the town of Zeya from where they will be transported by vehicles to the Tsiolkovsky research center at the Vostochny cosmodrome, he said.

 

It was reported earlier that the rocket’s fragments after its launch should have fallen at the boundary of the Zeya and Tynda districts.

A Soyuz-2.1b carrier rocket blasted off from the Vostochny cosmodrome at 08:41 Moscow time with 19 space satellites on board on Tuesday.

Russia’s State Space Corporation Roscosmos earlier reported that "the Soyuz 2.1b rocket put the booster Fregat and space satellite Meteor-M in the designated intermediate orbit." However, efforts failed to establish contact with the booster during the first planned communications session.

Quelle: TASS

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Update: 2.12.2017

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Fregat booster with 19 satellites falls into northern Atlantic

The Fregat booster with 19 satellites most likely fell down into northern Atlantic, Russia’s state space corporation Roscosmos said on Friday citing findings of the commission that probed into the abortive launch from the Vostochy space center on November 28.

"According to the calculations, the most probable area of the fall of the upper stage is northern part of the Atlantic Ocean, 42° North Latitude, 38° West Longitude, with a dispersion range of 120-230 kilometers,+-45 kilometers perpendicular to the fall trajectory," Roscosmos said.

Apart from that, according to Roscosmos, the upper stage of the Soyuz-2.1b rocket was put onto the support orbit in a routine mode.

Quelle: TASS



 



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