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Questions tagged [crewed-spaceflight]

Crewed spaceflight (also referred to as human spaceflight or manned spaceflight) is space travel with a crew aboard the spacecraft. When a spacecraft is crewed, it can be operated directly, as opposed to being remotely operated or autonomous.

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Manned entry to Mars

Did Insight have a ballistic entry? If so, does NASA plan a ballistic or skip-glide entry for manned missions to Mars?
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281 views

With six spacecraft currently docked at the ISS, how could Santa (or anyone else) deliver presents?

This ISS tweet says: Three days after launching from Florida the @SpaceX #Dragon cargo craft was installed to the Harmony module at 10:36 a.m. EST. There are now six spaceships parked at the ...
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What are the advantages to sending a person vs robotics to Mars?

Why is it needed to send a person to Mars one day when we have Rovers? What not obvious advantages do humans have in space exploration over Robotics and vise versa?
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Have there ever been people trapped in a shut down spacecraft?

I was reading some one-line sad stories and came across this one: Goodbye mission control, thanks for trying. So I was wondering if there have ever been people trapped in a spacecraft without a ...
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1answer
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How easy would opening an Apollo capsule following dry landing be?

To help frame the problem, I have written the following scenario: It's December 19, 1972 and the Apollo 17 has returned to Earth, but something went wrong and they landed in the middle of the Outback....
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1answer
88 views

With current or near-future projectable technology, how long would it take a ship to fly from Earth to a theoretical Earth-Sun L4 or L5 space station

Lets assume there's a space station already built, so this would be a flight off earth, brief acceleration, coasting most of the way, brief deceleration and connect with the station. I'm assuming ...
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Can carbon dioxide be distilled from lighter air this way?

Could simple air compressor contain carbon dioxide saturated air in a tank refrigerated to solidify the $CO_2$ at one end while at the same time releasing the pressured clean air at trapping the ...
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What immunizations (vaccines) are required for astronauts?

Astronauts are often required to get immunizations (incorrectly called vaccines). Which ones are required?
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What would happen if the first woman astronaut on mars took off her helmet? [duplicate]

How (suffocation/boiling fluids/freezing/exploding) and how quickly would she die?
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Could a woman astronaut survive on mars by wearing a heated tight-fitting shirt and leggings and an O2 respirator? [duplicate]

Her warmed tight-fitting shirt and leggings would provide protection form the low pressure and temperature, while the respirator would let her breath since mars has no oxygen. She would also have ...
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Have “QR” or other 2D barcodes been used in spaceflight?

Wikipedia: QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. ...
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Did “Where Is Everybody?” have any influence on multi-person crews?

The pilot episode of The Twilight Zone entitled "Where Is Everybody?" portrays a lone astronaut going crazy due to long-term isolation and lonliness. At the end of the episode, the general in charge ...
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148 views

What if an ISS astronaut refused to leave the space station? [duplicate]

When a mission to the ISS ends and the astronauts/cosmonauts shall leave the ISS with the Soyuz/Dragon spacecraft, what if an astronaut refuses to enter the Soyuz? What if he/she wants to remain on ...
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1answer
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How closely can ground control monitor ISS astronauts?

How closely can ground control monitor astronauts aboard the ISS. Are there cameras or microphones that the ground can use to see and hear what's happening, or are they reliant on the crew to relay ...
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What would astronauts see if they were in an Earth Moon L1 Lissajous orbit?

Would they be moving fast enough that the change of their position relative to the Earth and the Moon would be perceptible? Or would that change be too slow to notice moment by moment? I take it as ...
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81 views

Perspective on “light years”

If Alpha Centauri (approx 4.5 light years) is our nearest star, at the highest possible speed for human spacecraft, how long would it take to travel there? People talk about interstellar travel. ...
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1answer
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Is there an onboard video of the Soyuz MS 10 launch?

Does anyone know a link to the video obtained from the Soyuz "outboard" camera showing the separation of the side boosters of the Soyuz MS10 launch?
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1answer
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Acceleration due to uncontrolled rotation of Gemini 8

Having just watched the movie "First Man," I'm interested in analyzing the Gemini 8 malfunction in physics terms and possibly turning it into a homework problem or an example for my physics classes. I ...
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1answer
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What are the reasons Soyuz's lifespan in orbit is limited?

Following the recent Soyuz failure news, I found out that the currently docked Soyuz expires in the foreseeable future, leaving the crew with no means to return back to Earth. What are the reasons ...
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Can crewed rocket programs be accelerated in light of the Soyuz failure?

This morning a crewed Soyuz booster failed, causing the crew to return to Earth, as the capsule was not in orbit yet. With this being the second failure of a Soyuz rocket in two years (a Dec 2016 ...
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Fuel carried by current Crew Dragon

How much fuel weight will the current Crew Dragon carry? Will it be just enough for launch abort, or the full load (over 3000 lbs) needed for propulsive landing as a back-up to the parachutes? I ...
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1answer
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Is it possible to build hard shell suit with tighter fit to the body

The only hard shell space suit I know of, NASA''s AX-5, was big, bulbous, and seems to be not very comfortable, although offering zero pre breathing, when entering the suit. What I am thinking, is if ...
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1answer
129 views

Vented interstage for the final stage of Saturn V

As we can see in the figure below, the interstage between the escape module and the command module is vented. Why did they go for vented interstage? Wouldn't it increases the serodynamic loadings and ...
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3answers
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Will SpaceX's moon mission carry any engineers to fix the craft or will the artists be trained for these operations?

In the live stream, Elon Musk mentioned that a dozen would be the ideal size for a mission. Could have easily been an off the cuff range, but would allow for some engineers if something goes wrong. ...
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2answers
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Could the Space Shuttle orbiter have used the Energia HLLV (used by Buran)?

I would like to know if the Space Shuttle orbiters would have been capable of utilizing the Energia Heavy Lift Launch Vehicle (HLLV) used by the Buran instead of the External tank/SRB configuration. ...
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2answers
180 views

Why Spacex Lunar Mission date postponed?

Previously SpaceX Lunar mission date was 2022, but it is mentioned in the wiki that it is no earlier than 2023. Why the date has been postponed?
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How long will it take to develop the technologies necessary for a Mars Mission? [closed]

As I'm doing the math of when we can expect to actually see a Mars mission, I'm finding it difficult to believe we can get there until we complete several additional programs to prove technologies we'...
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Could electric fans lift a rocket strait up like a multi propeller drone? [closed]

Could electric fans like the ones below lift a rocket? What is the amount of electricity needed to lift a interplanetary rocket? Could a nuclear power plant provide enough electricity? https://en....
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0answers
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Which astronaut has experienced the largest relativistic shift in time (relative to the surface)?

Following this answer and then this question (where I've linked to Cosmonaut Sergei Krikalev; the World's Most Prolific Time Traveller) I've noticed that currently Krikalev does not hold the precisely ...
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1answer
140 views

International Space Station consumables shelf life duration

Most of ISS crew consumables are designed for a long store period. I couldn't find any info - what are shelf life durations for the consumables? What are typical shelf life in ISS storage for: ...
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3answers
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Have we considered sending people on no-return missions?

This question is more about morals and philosophy and is a rather dark one. Anyway, has it been considered and/or is it a viable idea to send an astronaut to another planet to die, or is it ...
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5answers
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What would be necessary in order for us to achieve a single stage to orbit, reusable rocket?

I have read articles and seen videos explaining why an SSTO (Single Stage To Orbit) rocket* is not possible. But I was wondering... What would be required to achieve this? Answers can be literally ...
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1answer
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Would this chair support astronaut during launch in Crew Dragon

Recently reporters were allowed to take pictures of Crew Dragon and the SpaceX flight suit. Among them is this picture: I was under the impression that: Chairs needed to be custom molded / adjusted ...
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1answer
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What are these Space Shuttle cockpit elements and what are they for?

In a book I'm reading, there is a figure showing the inside of a cockpit of a Space Shuttle.The labels point out various pets including an aluminum plate, an avionics bay, and an open grid panel, as ...
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NASA at sIxty years, will there be a new moonshot mandate?

NASA is sixty years old still going strong. There are few organizations that have made such an impact to man's quest for knowledge in such a short time span. The contributions are many, and its ...
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2answers
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Budgetary mission considerations for a disembodied pilot/crew? [closed]

It is not unusual in Science Fiction for a disembodied human to be on spaceship. Either the brain is removed from the body; kept alive artificially and often connected to the ship directly. ...
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1answer
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Will a crew or crews for one or more commercial launch vehicles to the ISS really be announced in August 2018?

The Washington Post article Boeing faces a significant setback with the spacecraft it is designing to fly NASA astronauts includes the following statemt: The leak is likely to delay its launch ...
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1answer
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Differences in NASA long term human space exploration since 1989?

I'm doing some research in to the various NASA long term programs for human space exploration, and I'm having a really hard time figuring out how they are really different. It seems that since the "90 ...
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Kalpana One Habitat scaled up

Was wondering since this is such a stable simplified structure compared to all other designs pretty much, but just small, how does it scale? Specifically 1km and 4km radius. Population estimate ...
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0answers
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How is Dragon-v2 prepared for being docked for months at ISS?

The Dragon spacecraft is being certified for manned spaceflight. If it's to replace Soyuz, though, it will have to serve as an escape pod for the crew. The current delivery missions are proving its ...
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2answers
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How were the Flight Journals of the Apollo missions originally transcribed/recorded?

I've been reading throught the Apollo 11 Flight Journals and was wondering how they were originally recorded and transcribed. It seems that they were painstakingly accurate down to the last second ...
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1answer
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What attitude have past and modern manned spacecraft maintain(ed) relative to Earth?

I hope this question is not too broad. It is inspired by another question. We know that ISS keeps its nadir pointing to Earth's surface. What about other manned spacecraft? Do/did they have ...
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1answer
123 views

Manned exploration or Colonization of Ceres — Any studies

There has been much discussion, here and elsewhere about the manned exploration or colonization of Mars. Among the problematic aspects are shortages of hydrogen and nitrogen in most areas, dust, and ...
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5answers
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Could “peak Apollo levels” of support have gotten NASA astronauts to Mars in the 1980's?

In an "alternate universe" where NASA continued to receive a mandate, funding and public support at say peak Apollo levels, could another ten or twenty years have gotten boots on Mars, with astronauts ...
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3answers
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Has the ISS ever not had a lifeboat?

The International Space Station typically has one or more (manned) spacecraft docked. This is obviously to ferry crew to and from the station for each of the Expeditions. The Soyuz currently fulfils ...
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1answer
119 views

Once a spacecraft is in space what factors determines its top speed?

Is there a limitation of speed of a spacecraft in space because of suns gravity? Is the speed purely dependent on the engineering? Or other factors comes into play?
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490 views

Why does the current Soyuz flight (2018-06-06) take two days?

At NASA's blog you can read about the Soyuz flight for expedition 56-57. It says: ...blast off Wednesday at 7:12 a.m. EDT on a two-day trip to the station. Why does it take two days this time? ...
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1answer
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What data was used to estimate accumulated radiation dose for the Apollo astronauts?

Half-year, and occasional one-year stints aboard the ISS, and especially lifetime totals nearing 2.5 years are possible ethically because these missions take place within the Earth's magnetosphere ...
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1answer
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What is the mass and power consumption of the COLBERT treadmill?

What do you think is the mass and power consumption of the COLBERT treadmill? Sources are greatly appreciated.
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1answer
138 views

How will insurance work for manned commercial missions?

I know that commercial satellite missions have insurance, but will they cover the same thing for manned missions? Has there been any sort of publication talking about this sort of thing?