Proton-M/Briz-M Phase IV is the fourth documented performance phase of the four-stage Proton-M/Briz-M configuration, introduced in 2016 for high-energy commercial and government missions.
Proton-M/Briz-M Phase IV is the fourth documented performance phase of the four-stage Proton-M/Briz-M configuration, introduced in 2016 for high-energy commercial and government missions.