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Proton accident with GLONASS satellites

Posted on July 11th, 2013 at 18:42 by John Sinteur in category: News -- Write a comment


By July 9, it is transpired that investigators sifting through the wreckage of the doomed rocket had found critical angular velocity sensors, DUS, installed upside down. Each of those sensors had an arrow that was suppose to point toward the top of the vehicle, however multiple sensors on the failed rocket were pointing downward instead. As a result, the flight control system was receiving wrong information about the position of the rocket and tried to “correct” it, causing the vehicle to swing wildly and, ultimately, crash.

To be fair, it is unusual for “this end up” to define what “up” is.

The obvious solution is to replace “This way up” with “This end points towards the pointy end of the rocket”.

The real solution is to redesign the widget to be asymmetrical and only fit one way.

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