Russian experts believe that the air leak on the ISS, which was recorded on board the station just over a year ago, could have been caused by the wear of the rubber seals in the docking station of one of the modules. As follows from the negotiations between the cosmonauts and the MCC specialists, we are talking about the Zvezda module.
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The docking station in question is reportedly located aft of the module. It is to it that the Russian manned spacecraft Soyuz and cargo ships Progress dock during flights.
“Now our specialists have one of the main versions – they suspect that the problem is in the unit's docking flange, which is fastened with 48 bolts pressed from the side with rubber bands. In fact, due to the long service life of these seals, a leak could have formed, ”the control center told the crew members.
In addition, the Russian cosmonauts were asked to dismantle the protective casing of the docking mechanism and glue all the rubber seals with tape. After that, the specialists are going to check the tightness of the Zvezda intermediate chamber, which they suspect of a leak, for 3-4 hours.