Crash rocket "proton-M" in 2013 happened due to the fact that the speed sensors were inverted 180 degrees. This mistake resulted in the distortion of the control systems of the launch vehicle.

Became known cause of the crash rocket "proton-M" in 2013. The tragedy of the carrier rocket with the GLONASS satellites on Board has happened due to the fact that the measure velocities were inverted "feet up". Said the official dealer of the Russian Investigative Committee Vladimir Markin.

"According to investigators, the suspects Grishin, Nikolaev, and Gudkov in 2011 was installing a rocket-carrier "proton-M" measuring angular velocities in the yaw channel. In the result of a violation of scientific and technical disciplines, provided design and technical documentation, these gauges were installed incorrectly (rotated 180 degrees from normal position)" - quoted Markin RIA Novosti. He stressed that this situation contributed to the distortion of the control systems of the launch vehicle. As a result, this led to the fall and destruction of "proton-M".

The carrier rocket "proton-M" in the summer of 2013 with 3 domestic navigation satellites "GLONASS-M" exploded in the air, and crashed to the launch site after 1 minute of the start. With all this on Board were unsafe chemical substances which could cause an environmental disaster.
sections: Politics, Accidents, World News