April 28, 2015, 7:09 a.m. - April 28, 2015, 7:09 a.m.
The Soyuz 2.1A converted the flight control system from analog to digital, which allowed launch from fixed platforms. It also allowed big fairings and payloads.
Progress M-27M (Russian: Прогресс М-27М), identified by NASA as Progress 59 or 59P, was a Progress spacecraft used by Roscosmos in an unsuccessful attempt to resupply the International Space Station.Progress Details
Progress Rocket Space Centre, formerly known as TsSKB-Progress, is a space science and aerospace research company which is known for manufacturing launch vehicles and satellites. Most notably, Progress Rocket Space Centre is the manufacturer of Soyuz launch vehicles.INFO WIKI