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Questions tagged [proton-m]

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6 votes
1 answer
127 views

Proton rocket's engine fizzle

Why does one of Proton's engines sometimes leave a dark gas? Is it some sort of byproduct of the UDMH and NTO reaction or did the engine fail?
Spacey XL's user avatar
5 votes
1 answer
336 views

Does the Proton-M have a launch termination system?

I was under the assumption that, in contrast to the oft-repeated "oh, those Russians", Protons actually do have launch termination systems which can be used to destroy the vehicle, akin to ...
Anton Hengst's user avatar
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6 votes
0 answers
276 views

Why Russian rockets do not employ a true Range Safety Officer (RSO) destruct system?

In contrast to US & ESA programs, Russians do not employ true RSO destruct system. If rocket loses control, ground officers can send manual shut down command but they never destroy rocket in air ...
WOW 6EQUJ5's user avatar
  • 2,321
1 vote
2 answers
392 views

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 ...
Isrorian's user avatar
  • 569
8 votes
1 answer
2k 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?
Junior Miranda's user avatar
5 votes
1 answer
826 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' ...
TildalWave's user avatar
  • 76.1k