Questions tagged [soyuz-spacecraft]

Questions regarding the Soyuz manned spacecraft used by the Soviet and Russian space program.

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6 votes
1 answer
226 views

Soyuz flight books?

I have the Crew Operations Manual, but I wonder if any of the books carried onboard mentioned in it are available anywhere? There is a flight plan book, a nominal checklist, off-nominal, backup and ...
12 votes
1 answer
288 views

Will Soyuz spacecraft be able to visit the Lunar Gateway?

I mean launch from Earth, dock to the gateway and come back.
8 votes
1 answer
2k views

How does radar calibration using LEO orbited calibration spheres work?

On December 28, 2013 two Russian SKRL-756 calibration sphere satellites will be launched during the maiden flight of the Soyuz-2.1v, a brand new lightweight derivative of the Soyuz launch vehicle, ...
3 votes
2 answers
184 views

Soyuz thruster placement

I notice that the Soyuz uses two high-thrust thrusters to translate in one direction along an axis, however some of the thrusters are located at a slight angle on either side of this axis, rather than ...
2 votes
0 answers
117 views

What is the most efficient method of landing for space capsules returning to earth? [closed]

I have read that the Russians don't land on water because they don't have access to a large warm-water coastline like the US. US has large swaths of land and water and most US capsules (Apollo, Dragon,...
11 votes
1 answer
2k views

Where can I download the Soyuz Crew Operations Manual?

Where can I download the Soyuz Crew Operations Manual?
8 votes
1 answer
573 views

What is the propellant mass for the Soyuz descent module?

I learned some time ago that the Soyuz capsules use hydrogen peroxide as a monopropellant. I'm trying to use this fact for a chemistry question posed to my students, but I cannot find anywhere how ...
6 votes
1 answer
136 views

Docking orientation of Soyuz 4 and 5

I was discussing with a friend about the risk of solar panels colliding with each other if the rates imparted during undocking of similar crafts are higher. Which led to the question, then, why not ...
3 votes
1 answer
79 views

Soyuz: Do you know the coefficient drag and lift to drag ratio are during reentry?

I've been learning Python as a hobby the last two years. I like spaceflight too. Therefore I wrote this code to simulate the reentry of a Soyuz. I'd appreciate some feedback: https://github.com/fra-...
2 votes
2 answers
169 views

Dragon ballistic/drag coefficients?

I'm looking for some estimates of Dragon's ballistic or drag coefficients in its reentry (heat shield forward) configuration. Estimates for other spacecraft would be useful also as they would give me ...
3 votes
0 answers
51 views

How is roll alignment achieved by the Soyuz docking mechanism (SSVP)

The best description of the Soyuz docking system I could find is in the proceedings of the 6th Aerospace Mechanisms Symposium (scroll to PDF page 139, labeled page 143). The alignment process is ...
9 votes
2 answers
3k views

Soyuz for Sale?

Reading through some stuff on the interwebs I came across some information saying that some old Soyuz Capsules are keep in a junkyard. Does anyone know if it's actually possible to purchase one of ...
2 votes
3 answers
883 views

Why are these Soyuz Astronauts/Cosmonauts wearing sun glasses and a blanket after landing?

Why are these Soyuz Astronauts/Cosmonauts wearing sunglasses? Is there any scientific reason for this? (Please don't say they want to look cool) I have not seen Shuttle Astronauts wearing sunglasses ...
8 votes
2 answers
791 views

How is the docking hatch on the Progress/ATV opened?

Normally during the Progress or ATV hatch opening procedure the crew inside the ISS turn a handle to unseal the SSVP drogue cover which they then pull inward, revealing the Progress docking probe and ...
7 votes
1 answer
231 views

What is this thing on the right of the frame in this photograph? (STS-71)

What is this (blurred) thing that can be seen to the right of the frame in this photograph? (some versions crop it out) It is a photograph taken from Soyuz TM-21 of Mir and STS-71 Atlantis docked in ...
10 votes
2 answers
2k views

What does Soyuz's button-pushing "fancy stick" look like? Are there others?

In the Smarter Every Day video How to FLY A SPACESHIP to the SPACE STATION - Smarter Every Day 131 the host Destin Sandlin (seated in the center seat of a Soyuz capsule) asks astronaut Scott Kelly (...
2 votes
0 answers
105 views

How much did NASA pay Roscosmos for the Soyuz to provide assured crew return services

The STS orbiter wasn't able to stay on orbit for very long, and the ISS had an SOP of having a return seat for each body on the station, so during the years of the Shuttle performing crew rotation ...
2 votes
1 answer
926 views

Why does "Tim Peake's capsule" look like it's copper now?

What are these capsules made of? This is the Expedition 47 return capsule that brought Astronauts Yuri Malenchenko, Timothy Peake, and Timothy Kopra back to Earth. According to IFL Science!: The ...
5 votes
0 answers
88 views

Soyuz 11 - communication transcript

Are there any communication transcripts available of Soyuz 11 spaceflight? I am especially interested in the part where pressure equalisation valve was opened way too fast and the crew died due to ...
16 votes
3 answers
5k views

Evacuating the ISS but wait, there's only one Spacecraft?

I was doing some research regarding the Soyuz as I'm currently planning a summer project in which I would build a close replica of a Soyuz when the question popped into my mind, "What would ...
11 votes
1 answer
1k views

What is the procedure in case the ISS loses one of the evacuation crafts?

Suppose that a micrometeorite or a sudden failure renders one of the Soyuz inoperable, or that a routine inspection discovers a defect in one of them that makes it unsafe. What is the protocol to ...
1 vote
0 answers
165 views

How often are fewer than three astronauts present when moving a Soyuz spacecraft from one docking port to another?

CNN's Astronauts relocated a spacecraft outside the International Space Station (was it inside before?) says: Russian cosmonauts Sergey Ryzhikov and Sergey Kud-Sverchkov, along with NASA astronaut ...
16 votes
2 answers
20k views

How similar are Soyuz and Progress?

Superficially the Soyuz and Progress spacecraft look very similar: (Soyuz TMA-7) (Progress M-52) So it would be easy to imagine that they share a common service module and/or orbital module. But ...
14 votes
1 answer
1k views

Can a Soyuz-MS still propel itself back to earth if all its Hydrogen Peroxide decomposed?

In this answer it is stated that: If the fuel fully decomposes then return to Earth is still possible but only via ballistic descent I find it a little bit surprising, but maybe there is enough Δv ...
19 votes
1 answer
1k views

Does the Soyuz spacecraft use chemically stabilized hydrogen peroxide (H₂O₂) to remain ISS-dockable for 200+ days?

Hydrogen peroxide (H2O2) from the local shop (dilute, 2-3%) sometimes has a stabilizer to slow its breakdown rate and increase its "shelf-life", since we'd like to keep it around the house on our ...
4 votes
0 answers
186 views

Why have astronauts had to take Soyuz capsules "out for a spin" on 15 separate occasions? (move from one Soyuz port to another)

NASA News item Space Station Crew to Relocate Soyuz to Make Room for New Crewmates says: Three residents of the International Space Station will take a spin around their orbital neighborhood in the ...
1 vote
0 answers
65 views

Soyuz TMA Neptune IDS Button Lights Behavior On Click

I made a simple virtual Soyuz TMA Neptune IDS using simple coding (a work in process). The purpose of it is solely for the buttons location familiarization of the control panels. The buttons react on ...
3 votes
1 answer
172 views

What is the cost of production or sale of a Soyuz spacecraft?

Soyuz manned spacecraft have been operating for over fifty years and have made one hundred and forty five flights. There have been many upgrades and improvements and is still going strong. I imagine ...
5 votes
1 answer
300 views

Why will the Soyuz MS-17 be relocated on the ISS?

According to the Soyuz MS-17 Wikipedia page, the spacecraft is planned to relocate from Rassvet nadir to Poisk zenith on 10 March 2021. This 3 weeks before the next Soyuz, MS-18 arrives. From ...
1 vote
0 answers
96 views

Why do the Shenzhou seating assignments differ from Soyuz?

The Shenzhou spacecraft is China's crewed space vehicle. It is derived from the Russian Soyuz spacecraft. According to Wikipedia, The commander sits in the center seat on both spacecraft. However, ...
10 votes
1 answer
498 views

Why does it take three years to manufacture a Soyuz spacecraft?

I've read a Russian article based on the recent report by the US Government Accountability Office regarding the NASA Commercial Crew Program. The article claims that it takes three years to order a ...
17 votes
2 answers
1k views

Highest apogee of a Soviet/Russian crewed spacecraft?

I wonder which Soviet/Russian crewed spaceflight reached the highest apogee and how high. For America, the highest apogee ever reached is 1,368 kilometers (~ 850 mi) by Gemini 11 (except that America ...
8 votes
2 answers
472 views

How much of the printed materials (manuals, instructions etc.) were allocated for the crew's use in Space Shuttles?

Whilst watching youtube video of an occasional Soyuz spacecraft launch (Soyuz ТМА-19М in this case), I've noticed (at 8:07) this large bundle of books. Another video of TMA-16M flight at 39:40 shows ...
9 votes
1 answer
262 views

Is there an equivalent of the Dragon 'claw' and Apollo umbilical fairing between the Soyuz crew and service modules?

The Apollo service module provided power etc. to the command module through umbilical connections covered by a fairing. When the two modules were separated, a 'guillotine' cut through the cables and ...
2 votes
0 answers
80 views

What is the splash down speed of the manned dragon capsule?

What's the rated speed of the crewed dragon capsule? Do we have any data on the actual measurement for the demo mission? I'd also appreciate any info on speed for Soyuz, other soviet manned, Apollo, ...
12 votes
2 answers
1k views

Are any of these Soyuz controls involved in separating the orbital module?

According to this Q & A, it's very likely that the Soyuz spacecraft's orbital module can be manually separated independent of other spacecraft operations. On this CollectSpace page, there's an ...
12 votes
1 answer
1k views

Is this smoke from Expedition 53 returning Soyuz capsule?

I was clicking through YouTubes and came across the NASA Video ISS Expedition 53 Landing in Kazakhstan (also here). I don't recall seeing such prominent and continuous smoke from returning Soyuz ...
7 votes
3 answers
1k views

Soyuz has a Space Periscope?

The image Photo ID: ISS049-E-003166 can be found in Flikr and Wikimedia Commons as well as in Spaceflight Now. There is a long (perhaps 1 meter?) green structure that is sticking out from the side of ...
5 votes
1 answer
770 views

What technical details exist about the Soyuz TMA spacecraft and its Simvol Displays & Cockpit Controls?

I am looking for technical details about the soyuz tma, simvol displays and cockpit controls in general. Something like the NASA familiarization manuals, but for Soyuz. And in english :) Can anyone ...
4 votes
2 answers
338 views

Landing shock of Soyuz spacecraft?

Every astronaut launching on a Soyuz has a custom-made seat. The seat should prevent injuries from the very hard landing. Are there any numbers about the maximum decceleration when hitting the ground?
4 votes
1 answer
287 views

What options exist for crew transfers to the ISS?

Since the retirement of the Space Shuttles, all crew transfers from and to the ISS are performed using the Russian Soyuz crafts launched with the launch system of the same name. Should Russia ...
3 votes
1 answer
169 views

How do Russians enumerate old Soviet space missions?

How are old Soviet space missions numbered in Russia? Were the earliest missions actually given a number, or are they referred to by their cosmonaut, or by a spacecraft nickname instead? Does the ...
19 votes
2 answers
2k views

Why do Soyuz landings seem to be overshot?

Soyuz descent module re-entry flight is piloted (one of two modes AUS/computer or RUS/manual), using 8 thrusters, toward the Kazakhstan landing site. The ballistic re-entry occurs only when the other ...
10 votes
1 answer
522 views

How close to a building has a Soyuz landed?

Soyuz capsules are designed to land onto land. To avoid the small chance of harming people or property, they are usually targeted to land in remote parts of Kazakhstan. However, some landings aren't ...
-3 votes
1 answer
148 views

Why are the Soyuz and Progress spacecrafts about as expensive as the Soyuz rocket?

I have found this text: "In billion rubles: For Progress (without the cost of ~2.8 tonnes of cargo): Rocket: ~1.25 (Soyuz 2.1a) = 20.83 mil dollars Ship: ~0.9 (Progress MS) = 15 mil dollars ...
4 votes
2 answers
133 views

Do non-American space travellers train on Dragon capsule as well?

Soyuz is a spacecraft which still uses technologies from soviet era. The Dragon capsule is state of the art with its electronic upgrades. With Russia and US sharing the International Space Station ...
3 votes
0 answers
59 views

Soyuz parachute cord/rope forces

I'm wondering about the forces (e.g., how much pressure is being applied, how much pulling force, etc.) experienced by the ropes of the Soyuz parachutes when they are deployed. Many thanks!
6 votes
1 answer
101 views

Are there any differences in docking procedures between ISS and manned capsules vs. unmanned capsules?

The Russian Soyuz has an extensive history in docking with ISS with both manned and unmanned capsules. SpaceX just recently demonstrated manned-capsule docking with ISS with a history of unmanned ...
2 votes
1 answer
147 views

Why were there two Soyuz 39?

Why were there two Soyuz missions numbered 39? There was Soyuz 7K-T No.39 in 1975, and Soyuz 39 in 1981. Questions about similarly confusing numbering by NASA: Why did Apollo mission numbering skip ...
5 votes
1 answer
179 views

Why does the ISS occasionally operate with just 3 crew members?

There have many instances where the ISS only has 3 crew members, often for many weeks. This places significant strain on workload and productivity. Why isn't a new crew launched quicker?