Questions tagged [proton-m]

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What is the latest GSO capacity for the Russian heavy launch-vehicle Proton-M?

Proton started with Proton-K (Proton-Zond) to Proton-M and has now grown to major phases 1-4 and enhanced Block-Dm and Briz-M. What is the latest geostationary orbit (GSO) capacity? I could not find ...
6
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1answer
985 views

Why do Proton rockets use two types of main engines in its second stage?

The second stage of Proton (8K-82K) rocket has two types of main engines (RD-0210 and RD-0211). Does someone knows why?
5
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1answer
772 views

What happened during ILS Proton M / Mexsat 1 launch?

It seems that some "abnormal situation" (нештатная ситуация) happened about a minute before Briz-M upper stage ignition, possibly during third stage separation of the International Launch Services' ...