The pressure in the Zvezda service module compartment, where the cracks were found, will be raised to 200 mm Hg. Art. during the day. This was announced on Saturday, July 31st, in a message posted on the website. Roscosmos…
It is noted that last night the crew, in accordance with the previously received instructions from the specialists of the Main Operational Control Group at the Mission Control Center, reported to the Earth that the pressure in the chamber is 154 mm. rt. Art.
“During the day, the pressure will be raised to 200 mm Hg. Art. “, – said in the message.
In addition, Roskosmos reported that the transition chamber of the Zvezda service module is separated from the main volume of the International Space Station (ISS). The pressure in the chamber remains at the level of 150-200 millimeters of mercury.
It is emphasized that the work is planned and has nothing to do with the multipurpose laboratory module (MLM) “Science”, the pressure in which is normal.
Earlier, on July 30, the “Science” module, intended for the implementation of the Russian program of scientific and applied research and experiments, docked to the ISS.
Later, the Russian cosmonaut Oleg Novitsky on board the ISS informed the specialists of the Mission Control Center (MCC) near Moscow about the unplanned engines of the Nauka module. The astronauts later reported that they had been turned off.
Roskosmos explained that the operation of the engines was associated with the process of transferring the module from the flight mode to the “docked with the ISS” mode.
It was also reported that in order to eliminate the loss of orientation of the ISS caused by a change in altitude by 45 degrees due to spontaneously turned on engines of the Nauka module, it was necessary to turn on the engines of the Zvezda module and the Progress MS-17 cargo vehicle docked to the Poisk module. …
On July 21, the module was launched from the Baikonur cosmodrome on a Proton-M rocket and put into near-earth orbit. On July 26, Russia undocked the Pirs module from the Zvezda module on the ISS to make room for Nauka.
The Nauka module began to be built at the Khrunichev Center in 1995 as a ground backup for the first Zarya module of the ISS, while the Pirs module was launched and docked to the ISS in 2001. It was used for space walks from the Russian segment of the station.