Berkut spacesuit

Short description: Soviet Spacesuit

Berkut spacesuit

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.

## Contents

* 1 Description
* 2 Specifications
* 3 References
* 4 External links

## Description

The Berkut spacesuit had two pressurization settings, one at 0.27 atmospheres and the other at 0.40 atmospheres (nominal mode).[1] Movement within the suit was seriously restricted.

The suit includes: helmet, spacesuit, and protective clothing. The astronaut's life is maintained through the on-board life support system or the backpack-type automatic system. The safety harness has been used during spacewalks.

The helmet of the suit cannot be rotated, and it has a quick-release buckle. It includes a hard hat, a lifting visor and a light filter. The helmet is made of aluminum alloy, the size does not affect the movement of the head. The visor of the helmet is made of aluminum alloy. A light filter similar to that on an aircraft is placed inside the helmet.

The astronaut's suit has a three-layer shell - a load-bearing layer on the outside and two sealed layers (main layer and backup layer) on the inside.

The protective clothing is a bodysuit made of durable fabric and has multiple layers of vacuum insulation.

The automated system consists of a KP-55 oxygen device and three oxygen cylinders placed in a backpack. Before going into space, the astronaut must put on the backpack and secure it to the spacesuit using a suspension system. Oxygen from the cylinders is directed into the helmet, then into the shell of the spacesuit and then released into the environment. A backup oxygen supply system is also provided - through a hose from the gas cylinders installed in the air chamber. This system is capable of regulating the pressure in the spacesuit.

The safety harness is 7 m long and includes shock absorbers, steel cables, emergency oxygen supply tubes, and electrical wires.

## Specifications

* 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]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Isaac Abramov; Ingemar Skoog (2003). Russian Spacesuits. Chichester, UK: Praxis Publishing Ltd.. ISBN 1-85233-732-X. https://books.google.com/books?id=f7pZosHqkbEC&q=S-901J+suit.

* Berkut at Encyclopedia Astronautica
* http://galspace.spb.ru/museum-1.php?foto_page=38 (in Russian)

## External links

| Wikimedia Commons has media related to Berkut spacesuit.

|

* Video of Voskod 2 mission (Russian)
* Photo of Berkut space suit at Memorial Museum of Cosmonautics in Moscow (38 & 39)
* Photo of outermost layer removed

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Space suits

Models|

| USSR / Russia|

* SK-1
* Berkut
* Yastreb
* Krechet-94
* Strizh
* Sokol
* Orlan

|

United States|

* Navy Mark IV
* Gemini
* Manned Orbiting Laboratory (MOL)
* Apollo/Skylab A7L
* Shuttle Ejection Escape Suit
* Launch Entry Suit (LES)
* Advanced Crew Escape Suit (ACES)
* Extravehicular Mobility Unit (EMU)

China|

* Shenzhou IVA
* Haiying
* Feitian

Developmental|

* Mark III
* I-Suit
* Space activity suit
* Constellation Space Suit
* Z series

Components|

* Hard Upper Torso (HUT)
* Liquid Cooling and Ventilation Garment (LCVG)
* Maximum Absorbency Garment (MAG)
* Primary Life Support System (PLSS)
* Snoopy cap
* Thermal Micrometeoroid Garment (TMG / ITMG)

Related|

* Extravehicular activity (EVA)
* Astronaut propulsion unit
* Environmental suit
* Pressure suit
* SuitSat

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