Update on Saturday’s Proton launch failure
Link here. The failure was in the third stage, which was the cause of a previous Proton failure last May.
Note that the Proton also put a commercial satellite in the wrong orbit in October when the upper stage underperformed.
Overall, the Russians are doing a very poor job in eliminating the serious quality control problems that have plagued their aerospace industry in recent years. If anything, the problems appear to be worsening.


