The Berkut (Russian Беркут, meaning golden eagle) is a space suit model developed to be used for extravehicular activity for the Voskhod 2 mission aboard a Voskhod spacecraft on the first spacewalk. It was developed by NPP Zvezda in 1964–1965. It was a modified SK-1 suit. It was only used by the Voskhod 2 crew.

Specifications

The suit had two pressurization settings, one at 0.27 atmospheres and the other at 0.40 atmospheres (nominal mode).^[1] Life support was contained in a back pack, which had a large enough oxygen supply to last for 45 minutes of activity. Movement within the suit was seriously restricted.

• Name: Berkut Spacesuit
• Derived from: SK-1 spacesuit
• Manufacturer: NPP Zvezda
• Missions: Voskhod 2
• Function: Intra-vehicular activity (IVA) and orbital Extra-vehicular activity (EVA)^[1]
• Operating Pressure: 400 hPa (5.8 psi)^[1]
• Suit Weight: 20 kg (44 lb)^[1]
• Backpack Weight: 21 kg (46 lb)^[1]
• Total Weight: 41 kg (90 lb)^[1]
• Primary Life Support: 45 minutes^[1]