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Soviet Space Program Soyuz 35 Soyuz-U

Launch Status
Success

Meet the Astronaut Crew

ROSCOSMOS Astronaut Leonid Popov, Soyuz 35 Commander

Leonid Popov

Astronaut details for Leonid Popov
Birthday08/31/1945
RoleCommander
NationalityUkraine
First Flight04/09/1980
Last Flight08/19/1982

Popov was born in Oleksandriia, Kirovohrad Oblast, Ukrainian SSR. He was selected as a cosmonaut on April 27, 1970, and flew as Commander on Soyuz...

ROSCOSMOS Astronaut Valery Ryumin, Soyuz 35 Flight Engineer

Valery Ryumin

Astronaut details for Valery Ryumin
Birthday08/16/1939
RoleFlight Engineer
NationalityRussia
First Flight10/09/1977
Last Flight06/02/1998

Valery Victorovich Ryumin (born August 16, 1939 in Komsomolsk-on-Amur) is a former Soviet cosmonaut. In 1973, he joined the RSC Energia cosmonaut corps. A veteran...

About the Soyuz 35 Mission

Mission details for Soyuz 35
TypeHuman Exploration
OrbitLow Earth Orbit

Soyuz 35 was the eighth mission to visit the Salyut 6 space station and carried the EO-4 expedition, which was the fourth long-duration crew for the station. The mission began on April 9, 1980, 13:38:22 UTC, launching Commander Leonid Popov and Research Cosmonaut/Flight Engineer Valery Ryumin into orbit. They docked with the station the next day. During their 186-day stay on the station, EO-4 crew conducted various scientific experiments, some repairs and replacements to the station and were visited by three uncrewed Progress cargo spacecrafts and 4 crewed Soyuz vehicles. Soyuz 35 swapped vehicles with the Soyuz 37 crew, which allowed for a longer stay in orbit.
The mission concluded with a safe landing back on Earth on October 11, 1980, 09:49:57 UTC.

Launch Pad & Location

1/5

Baikonur Cosmodrome, Republic of Kazakhstan

Launch statistics for 1/5 at Baikonur Cosmodrome, Republic of Kazakhstan
Launches487
Orbital Launch Attempts487
Total Launches1565

The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian crewed spaceflights are launched from Baikonur.

ROSCOSMOS Soyuz U Rocket

Rocket specifications for ROSCOSMOS Soyuz U
Length51.1 m
Diameter3.0 m
Stages2-3
Launch Mass313.0 T
LEO Capacity6,900 kg
Maiden Flight5/18/1973

Learn more about the ROSCOSMOS Soyuz U Rocket

Mission Spacecraft

Soyuz 35

Soyuz 35 (Soyuz 7K-T 11F615A8 #51) was the spacecraft used for this mission. It is a ROSCOSMOS Capsule designed for Manned and Cargo ISS Logistics and traveled to Salyut 6.

Soyuz 35 was a Soyuz spacecraft which launched on 9 April 1980 13:38 UTC. It transported two cosmonauts of EO-4 to Salyut 6. The crew was Leonid Popov and Valery Ryumin.

It also ferried down two cosmonauts from EP-5. Soyuz is a series of spacecraft designed for the Soviet space programme by the Korolyov Design Bureau (now RKK Energia) in the 1960s that remains in service today. The Soyuz succeeded the Voskhod spacecraft and was originally built as part of the Soviet Manned Lunar programme. nn The Soyuz spacecraft is launched on a Soyuz rocket, the most frequently used and most reliable launch vehicle in the world to date. The Soyuz rocket design is based on the Vostok launcher, which in turn was based on the 8K74 or R-7A Semyorka, a Soviet intercontinental ballistic missile. All Soyuz spacecraft are launched from the Baikonur Cosmodrome in Kazakhstan. 200 Days

Spacecraft details for Soyuz 35
TypeCapsule
AgencyROSCOSMOS
Serial NumberSoyuz 7K-T 11F615A8 #51
StatusSingle Use
DestinationSalyut 6
Maiden Flight11/28/1966
Mission End6/3/1980
Flights1
Crew Capacity3
Human RatedYes
Height7.5 m
Diameter2.7 m

About Soviet Space Program

The Soviet space program, was the national space program of the Union of Soviet Socialist Republics (USSR) actived from 1930s until disintegration of the Soviet Union in 1991.

The Soviet Union's space program was mainly based on the cosmonautic exploration of space and the development of the expandable launch vehicles, which had been split between many design bureaus competing against each other. Over its 60-years of history, the Russian program was responsible for a number of pioneering feats and accomplishments in the human space flight, including the first intercontinental ballistic missile (R-7), first satellite (Sputnik 1), first animal in Earth orbit (the dog Laika on Sputnik 2), first human in space and Earth orbit (cosmonaut Yuri Gagarin on Vostok 1), first woman in space and Earth orbit (cosmonaut Valentina Tereshkova on Vostok 6), first spacewalk (cosmonaut Alexei Leonov on Voskhod 2), first Moon impact (Luna 2), first image of the far side of the Moon (Luna 3) and unmanned lunar soft landing (Luna 9), first space rover (Lunokhod 1), first sample of lunar soil automatically extracted and brought to Earth (Luna 16), and first space station (Salyut 1). Further notable records included the first interplanetary probes: Venera 1 and Mars 1 to fly by Venus and Mars, respectively, Venera 3 and Mars 2 to impact the respective planet surface, and Venera 7 and Mars 3 to make soft landings on these planets.

Launch statistics for Soviet Space Program
Total Launches2,456
Successful2,288
Failed168
Consecutive Success17

Learn more about Soviet Space Program

Frequently Asked Questions

When was the Soviet Space Program Soyuz U Soyuz 35 launch scheduled?

The Soviet Space Program Soyuz U Soyuz 35 launch was scheduled for:
.

Where did the Soviet Space Program Soyuz U Soyuz 35 mission launch from?

The Soviet Space Program Soyuz U rocket launched from 1/5 at Baikonur Cosmodrome, Republic of Kazakhstan. The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian crewed spaceflights are launched from Baikonur.

What rocket was used for the Soyuz 35 mission?

The Soyuz 35 mission launched aboard a Soviet Space Program Soyuz U rocket. Detailed rocket specifications and performance data are available in the rocket details above.

What weather conditions could have delayed the Soviet Space Program Soyuz U Soyuz 35 launch?

The Soviet Space Program Soyuz U Soyuz 35 launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.

How can I get updates if the Soviet Space Program Soyuz U Soyuz 35 launch was delayed?

This page was updated in real-time with the latest Soviet Space Program Soyuz U launch status, including any delays or scrubs for the Soyuz 35 mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official Soviet Space Program live streams provided the most immediate range updates during the launch window.

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