Previously Undetected Software Bug Potential Cause for Soyuz/Fregat Failure

The failure of a Soyuz 2-1B/Fregat-M rocket launching the Meteor-M 2-1 weather satellite and 18 international secondary payloads was traced back to a software bug on the rocket’s Fregat upper stage brought on by the unique parameters for Soyuz launches out of the Far Eastern Vostochny Cosmodrome.

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Soyuz/Fregat Suffer First Russian Launch Failure of 2017 with Meteor Weather Satellite & MicroSats

Russia suffered its first launch failure of 2017 on Tuesday on the second Soyuz mission carried out from the new Vostochny Cosmodrome in the country’s far east, claiming the loss of the Meteor-M 2-1 weather satellite and an international assortment of small satellites.

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Photos: Soyuz Blasts off from Vostochny on Ill-Fated Mission with Meteor Weather Satellite

Russia’s Soyuz 2-1B rocket lifted off from the 1S launch pad at the Vostochny Cosmodrome at 5:41 UTC on November 28, 2017 with the Meteor-M 2-1 weather satellite and 18 small satellites riding as secondary payloads.

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Photos: Soyuz / Meteor-M 2-1 Processing & Rollout to Vostochny Pad 1S

The second Soyuz rocket to launch from the new Vostochny Cosmodrome in Russia’s far east completes assembly and receives its payload comprising the Meteor-M 2-1 weather satellite and 18 small satellites riding as secondary payloads.

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