Overview
- The Progress MS-35 mission is scheduled to lift off Wednesday from Baikonur Cosmodrome on a Soyuz 2.1b rocket during an instantaneous launch window tied to the ISS orbital plane.
- Roscosmos rolled the vehicle back to the assembly building after a Sept. 9 third-stage problem and completed corrective repairs before returning the rocket to the pad for today's attempt.
- The freighter carries roughly 2,600 kilograms of mixed pressurized and unpressurized cargo, including food, experiment hardware, station maintenance items, potable water, atmospheric gases and propellant to be pumped into the Zvezda module.
- Progress will follow a roughly 48-hour, multi-orbit rendezvous profile and is expected to dock to the ISS Poisk zenith port on Sept. 18 using the automated Kurs-NA system with the TORU manual backup available.
- The spacecraft is expendable and will remain docked for about five months before being filled with station trash and guided to a destructive reentry, continuing Progress's long role alongside Dragon, HTV-X and Cygnus in sustaining the crew.