Russian investigators have concluded last month’s Soyuz MS-10 abort was caused by a sensor failure on one of the four Soyuz FG boosters. The sensor, which triggers LOX valves to vent on the top of the booster – allowing them to cleanly depart from the core – resulted in the booster sliding down the side of the core and rupturing it tank, causing the Soyuz FG to fail and the Soyuz MS-10 to conduct an emergency abort. A press conference blamed an “error during assembly” of the launch vehicle as the root cause.
Aleksey Nikolayevich Ovchinin and Nick Hague were set to take up their tour on the International Space Station. However, as opposed to months, their space flight ended after 19 minutes and 41 seconds.
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The majority of that flight was a ballistic abort, following the loss of their Soyuz FG rocket.
Roscosmos immediately created a State Commission to determine the cause of the MS-10 abort and those findings have now been released via an address to the media on Thursday.
A few slides were shown, noting they had onboard video but opted to only show ...