When the Makeyev Design Bureau got the contract to build new "heavy" liquid-fuel ICBM, it was reported that the NPOMash (the Chelomey Design Bureau) is taking part in the project as well. However, the NPOMash chief designer, Alexander Leonov, is now saying that his design bureau does not contribute to the Sarmat development.
The book
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This is not that suprising; The success of the R-29 certainly attests to Makayev's abilities. Obviously Sarmat will have much more in common with the R-29 than the RS-20. I am still curious as to how they will achieve global range/south pole trajectory and 10 tonne payload while having a mass only half that of the RS-20. I'll believe that when I see it...
how they will achieve global range/south pole trajectory and 10 tonne payload
They probably won't
I think that he slightly dissembles...