Roskosmos declassified negotiations of the victims of the Soyuz-11 Soyuz-11 spacecraft of Dobrovolsky, Vladislav Volkova and Viktor Patsaeva. Materials are given on the website of the State Corporation.
The crew died on June 30, 1971 when returning to the Earth due to depressurization of the descent apparatus.
In the published documents, records of the crew negotiations with the measuring point before the launch of the ship are given. From the text it follows that the astronauts closed the hatches, they reported to the situation and the time was checked. Specialists of the measuring point reported on the state of the crew. “You have excellent parameters. And the respiratory frequency is excellent. The pulse does not exceed 76 at all. Keep in mind it. All this is very good,” noted in the measuring point.
Crew “Union-11” was to be docked with the world’s first orbital station “Salyut-1”, smooth it and hold a number of scientific experiments. Cosmonauts have successfully coped with the task. The depressurization of the spacecraft occurred during the return to the ground at an altitude of about 100 kilometers.