Roscosmos Pushes Back Pirs Module Undocking to Monday

The Nauka Multipurpose Laboratory Module undergoes final processing at the Baikonur Cosmodrome in Kazakhstan in preparation for its launch to the International Space Station on a Proton rocket. (Credits: Roscosmos)

Editor’s Note: The undocking of the Pirs module from the International Space Station had been scheduled for Friday to make way for the new Nauka science module. The delaty is due to problems with Nauka’s engines and docking system after launch from Baikonur Cosmodrome last week. Those issues have apparently been resolved.

MOSCOW (Roscosmos PR) — Based on the results of an operational meeting of the control group at the Flight Control Center of TsNIIMash (part of the Roscosmos State Corporation), specialists, based on the data obtained from telemetry and based on the need to build optimal orbit conditions, decided to adjust the plans for undocking the Pirs module. These operations are currently scheduled for Monday 26 July 2021.

On Saturday, Roscosmos cosmonauts Oleg Novitsky and Pyotr Dubrov closed the transfer hatches between the Pirs module and the Russian segment of the International Space Station, and checked them for leaks. The physical separation of the bundle from the Progress MS-16 cargo vehicle and the Pirs module from the ISS is tentatively scheduled at 13:56 Moscow time on July 26, and the fall of the fireproof structural elements of the module and the ship in the Pacific Ocean – at 17:51 Moscow time. the same day.

Now the Pirs docking module is docked to the nadir port of the Zvezda service module of the Russian segment of the station. It is planned that after undocking its place will be taken by the multipurpose laboratory module “Science”, which was launched on Wednesday from the Baikonur cosmodrome and is in autonomous flight.

On the eve of this event, the Aist-2D small Earth remote sensing spacecraft, developed at the Progress Rocket and Space Center (Samara, part of the Roscosmos State Corporation), photographed the International Space Station. RCC “Progress” is the operator of the satellite “Aist-2D”, providing control, reception, processing and distribution of the received information of remote sensing of the Earth.