Roscosmos - Soyuz 2.1a - Soyuz MS-27 - LS 31/6 - Baikonur Cosmodrome KAZ - April 8, 2025

Описание: Launch Date: April 8, 2025
Launch Time: 10:47 (Local Time Baikonur), 05:47 UTC, 07:47 CEST

Launch Provider: Roscosmos
Rocket Manufacturer: RKK Energia
Launcher System: Soyuz 2.1a
Mission: Soyuz MS-27
Flight Number: 83 for Soyuz 2.1a type
Launch Location: Launch Site 31/6 - Baikonur Cosmodrome, Kazakhstan
Launch Inclination: Northeast
Launch cost: $17,2 million (without payload, standard mission to LEO). Mission Cost of a Progress MS spacecraft: $12 million
Rocket:Height: 51,38 m
Payload to orbit: LEO 7,500 kg
Lift-Off Thrust: 4,550 kilonewtons
Fairing: Diameter 4,11 m - Height: 15,59 m

Soyuz MS-27 is a planned Russian crewed Soyuz spaceflight that will launch from Site 31/6 at the Baikonur Cosmodrome in April 2025 to the International Space Station. The mission will transport three crew members: Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky and NASA astronaut Jonny Kim.

The Soyuz MS-27 spacecraft was assembled by Energia and transported by rail from its manufacturing facility in Korolev, Russia, to the Baikonur Cosmodrome in Kazakhstan, arriving in December 2024. Final testing and processing began in mid-January 2025.[4]

Meanwhile, RKTs Progress produced parts for the Soyuz-2.1a rocket, transported by rail from its manufacturing facility in Samara, Russia, to Baikonur, and assembly was underway by the end of January.

Crew Soyuz MS-27:
Commander: Sergey Ryzhikov, Roscosmos - ISS Expedition 72/73 - Third spaceflight
Flight Engineer: Alexey Zubritsky, Roscosmos - ISS Expedition 72/73 - First spaceflight
Flight Engineer: Jonny Kim, NASA - ISS Expedition 72/73 - First spaceflight

Officially, the ISS Expedition 73 will begin after MS-27 docks, and Soyuz MS-26 undocks some days later.

The "Seat Exchange Program" between NASA and Roscosmos handles the mission. One NASA astronaut is flying with Soyuz, and one Roscosmos cosmonaut is flying with NASA. This guarantees that one crew member of the two nations is onboard the international or Russian section if another crew allocated for the ISS can't reach the station in time. NASA is not paying money to Russia for the flight with Soyuz as in the time after the Space Shuttle went out of service in 2012, and Roscosmos is not paying for the flight at NASA's side.