Yastreb
Encyclopedia
Yastreb is a Russia
n space suit
that was specially developed for early Soyuz
space vehicle missions and for EVA
. This model of space suit allowed the cosmonaut to spacewalk
from the orbital module
of Soyuz.
Design and development of the suit took place in 1966 by the Zvezda
Company with input from Alexei Leonov. The Berkut
suit that Leonov had used on the Voskhod 2
space walk had ballooned at the joints making movement very difficult. The Yastreb design was much more rigid using a system of pulleys and lines to regulate movement. The backpack containing life support
was mounted in a metal box that could be attached to the chest or to the leg to ease access through the small Soyuz hatch. The suit was to be worn only in the Orbital module
of the Soyuz spacecraft
and needed two people to put it on. The suit's capacity was limited, so the planned Soviet Moon landing the movements of the cosmonauts would be restricted.
The Yastreb suit was only used once, this was during the Soyuz 4
and Soyuz 5
docking and crew exchange. The suit was not worn during launch or reentry. During the mission both cosmonauts experienced problems with the suit.
Manufacturer: NPP Zvezda
Missions: Soyuz 4
and Soyuz 5
Function: Orbit
al Extra-vehicular activity (EVA)
Operating Pressure: 5.8 psi (400 hPa)
Suit Weight: 44 lb (20 kg)
Backpack Weight: 47 lb (21.5 kg)
Total Weight: 91 lb (41.5 kg)
Primary Life Support: 2.5 hours (150 minutes)
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
n space suit
Space suit
A space suit is a garment worn to keep an astronaut alive in the harsh environment of outer space. Space suits are often worn inside spacecraft as a safety precaution in case of loss of cabin pressure, and are necessary for extra-vehicular activity , work done outside spacecraft...
that was specially developed for early Soyuz
Soyuz programme
The Soyuz programme is a human spaceflight programme that was initiated by the Soviet Union in the early 1960s, originally part of a Moon landing project intended to put a Soviet cosmonaut on the Moon...
space vehicle missions and for EVA
EVA
Eva or EVA may refer to:* Eva , a given name for women** Eva , a list of people with the name EvaIt may also refer to:-In business and economics:* Earned Value Analysis, a measurement of project progress...
. This model of space suit allowed the cosmonaut to spacewalk
Extra-vehicular activity
Extra-vehicular activity is work done by an astronaut away from the Earth, and outside of a spacecraft. The term most commonly applies to an EVA made outside a craft orbiting Earth , but also applies to an EVA made on the surface of the Moon...
from the orbital module
Orbital module
The orbital module is a portion of spacecraft used only in orbit. These have developed from the Soviet Soyuz spacecraft.-Soyuz orbit module:The orbit module is a spherical part of Soviet-Russian Soyuz space ship series...
of Soyuz.
Design and development of the suit took place in 1966 by the Zvezda
NPP Zvezda
Research & Development Production Enterprise Zvezda, or R&D PE Zvezda is a Russian manufacturer of life-support systems for high-altitude flight and human spaceflight. Its products include space suits, ejector seats, aircraft escape slides, lifejackets and fire extinguishers...
Company with input from Alexei Leonov. The Berkut
Berkut spacesuit
The Berkut 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...
suit that Leonov had used on the Voskhod 2
Voskhod 2
Voskhod 2 was a Soviet manned space mission in March 1965. Vostok-based Voskhod 3KD spacecraft with two crew members on board, Pavel Belyaev and Alexei Leonov, was equipped with an inflatable airlock...
space walk had ballooned at the joints making movement very difficult. The Yastreb design was much more rigid using a system of pulleys and lines to regulate movement. The backpack containing life support
Primary Life Support System
A Primary Life Support System , is a device connected to an astronaut's or cosmonaut's spacesuit, which allows extra-vehicular activity with maximum freedom, independent of a spacecraft's life support system. The PLSS is generally worn like a backpack...
was mounted in a metal box that could be attached to the chest or to the leg to ease access through the small Soyuz hatch. The suit was to be worn only in the Orbital module
Orbital module
The orbital module is a portion of spacecraft used only in orbit. These have developed from the Soviet Soyuz spacecraft.-Soyuz orbit module:The orbit module is a spherical part of Soviet-Russian Soyuz space ship series...
of the Soyuz spacecraft
Soyuz spacecraft
Soyuz , Union) is a series of spacecraft initially designed for the Soviet space programme by the Korolyov Design Bureau in the 1960s, and still in service today...
and needed two people to put it on. The suit's capacity was limited, so the planned Soviet Moon landing the movements of the cosmonauts would be restricted.
The Yastreb suit was only used once, this was during the Soyuz 4
Soyuz 4
Soyuz 4 was launched on January 14, 1969. On board the Soyuz 7K-OK spacecraft was cosmonaut Vladimir Shatalov on his first flight. The aim of the mission was to dock with Soyuz 5, transfer two crew members from that spacecraft, and return to Earth...
and Soyuz 5
Soyuz 5
Soyuz 5 was a Soyuz mission using the Soyuz 7K-OK spacecraft launched by the Soviet Union on January 15, 1969, which docked with Soyuz 4 in orbit...
docking and crew exchange. The suit was not worn during launch or reentry. During the mission both cosmonauts experienced problems with the suit.
Specifications
Name: Yastreb SpacesuitManufacturer: NPP Zvezda
NPP Zvezda
Research & Development Production Enterprise Zvezda, or R&D PE Zvezda is a Russian manufacturer of life-support systems for high-altitude flight and human spaceflight. Its products include space suits, ejector seats, aircraft escape slides, lifejackets and fire extinguishers...
Missions: Soyuz 4
Soyuz 4
Soyuz 4 was launched on January 14, 1969. On board the Soyuz 7K-OK spacecraft was cosmonaut Vladimir Shatalov on his first flight. The aim of the mission was to dock with Soyuz 5, transfer two crew members from that spacecraft, and return to Earth...
and Soyuz 5
Soyuz 5
Soyuz 5 was a Soyuz mission using the Soyuz 7K-OK spacecraft launched by the Soviet Union on January 15, 1969, which docked with Soyuz 4 in orbit...
Function: Orbit
Orbit
In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System...
al Extra-vehicular activity (EVA)
Operating Pressure: 5.8 psi (400 hPa)
Suit Weight: 44 lb (20 kg)
Backpack Weight: 47 lb (21.5 kg)
Total Weight: 91 lb (41.5 kg)
Primary Life Support: 2.5 hours (150 minutes)