Yastreb – For work on spaceships Soyuz 1, Soyuz 4 and Soyuz 5
- In use in the years: 1967 – 1969
- Spaceships: Soyuz 1, Soyuz 4 and Soyuz 5.
- Weight: 41 kg.
The authors from NPP “Zvezda” finally decided on ventilation. Consisting in the fact that the exhaled air, after purification, was returned to circulation. This principle is still used in spacesuits today. The life support system was built into a 31.5 kg backpack that was placed on the legs.
Vladimir Komarov flew into space with this suit on the Soyuz 1 ship. However, his flight ended tragically, he did not connect with Soyuz 2, and during his return to Earth the braking parachutes got tangled and the cosmonaut died as a result of falling to the ground.
Only the crews of Soyuz 4 and Soyuz 5 managed to successfully enter open space (EVA) and connect the ships in orbit. Yastreb suits were able to fully use their functions in this way. But at the same time, they represented a dead end in the development of suits and were replaced by more modern types.