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.

Filter by
Sorted by
Tagged with
3 votes
0 answers
71 views

How does US crewed launch abort coverage "jump" the ocean in an instant?

As I understand things, the Commercial Crew Program stipulates full abort coverage from pad to orbit. An abort to the middle of the Atlantic ocean is understandably not acceptable. Watching the OFT-2 ...
user avatar
3 votes
0 answers
60 views

short duration of crew 4 mission

I am wondering why the crew 4 mission is (for the moment) only planned for 4 and half months and not the usual 6-6.5 months? Thanks.
user avatar
  • 371
2 votes
0 answers
129 views

Is electric propulsion feasible for human spaceflight?

I have been reading a lot about electric propulsion and was wondering if it would be feasible for human spaceflight. It is really efficient but it takes a while to get to the desired speed. Would it ...
user avatar
1 vote
0 answers
51 views

How spontaneously can a spacecraft be deorbited [duplicate]

Currently the return of AX-1 has been rescheduled multiple days due to weather concerns in the landing area. How quickly could astronauts on the ISS evacuate to the ground if so required? Scenarios ...
user avatar
  • 3,372
1 vote
1 answer
371 views

Why doesn't NASA fly its rockets on suborbital trajectories to the Moon?

After trying it out in Kerbal Space Program for a while, I was wondering why NASA doesn't fly on suborbital trajectories to the Moon. When I tested this idea in Kerbal Space Program I found out that ...
user avatar
0 votes
0 answers
53 views

How fast can LEO be evacuated [duplicate]

Currently the return of AX-1 has been rescheduled multiple days due to weather concerns in the landing area. How quickly could astronauts on the ISS evacuate to the ground if so required? Szenarios ...
user avatar
  • 3,372
1 vote
2 answers
123 views

Specifications for Spacecraft interior and exterior paint colours

Are there specifications for Crewed mission spacecrafts in terms of interior and exterior paint colours? I.e. Only specific paint colours are required internally and externally. Can these paint ...
user avatar
7 votes
1 answer
891 views

Can double deck spacecraft be designed and constructed for manned missions?

Double Deck Aeroplane Similar to double deck Aeroplane, can a double deck crewed mission spacecraft be designed and constructed? Benefits: More astronauts in the manned mission spacecraft viz Mars, ...
user avatar
9 votes
1 answer
1k views

Will the NASA Commercial Crew "zip line away from the tower and into" this "military armoured truck" in case of emergency? Does the truck have a name?

The NASA Commercial Crew @Commercial_Crewtweet The #Crew4 astronauts have been busy getting ready for their upcoming mission to the @Space_Station! The crew recently participated in simulations ...
user avatar
  • 148k
4 votes
0 answers
79 views

With the new (Feb 2022) NASA SpaceX Crew Dragon contract extension, how much per flight?

NASA awarded flights 7, 8, and 9 for Crew Dragon in an extension of the existing contract, bringing the total value to \$3,490,872,904 . We know that in 2014 SpaceX was awarded about $2.6 billion to ...
user avatar
  • 118k
4 votes
2 answers
497 views

Where to find Apollo lunar landing checklists?

Is this the only document where I can read the checklists for Apollo lunar landing? They look more sidenotes than real checklists, and they contain hundreds of acronyms; I would expect instead a "...
user avatar
  • 2,605
1 vote
1 answer
82 views

Do you need to operate laptop computers to run the ISS SSRMS robots Canadarm2 & Dextre? What if there's a pressure loss and you're wearing a suit?

Comments and to some extent the current answer to If an ISS emergency requires pressure suits temporarily, can they still use the laptops? Move the cursor? address a highly unlikely scenario where a ...
user avatar
  • 148k
12 votes
2 answers
297 views

How brightly does Venus's hot surface glow at night? Could you see it? Could you see well enough to walk around?

NASA's Parker Solar Probe Captures its First Images of Venus' Surface in Visible Light, Confirmed links to the new Geophysical Research Letter Parker Solar Probe Imaging of the Night Side of Venus. ...
user avatar
  • 148k
5 votes
2 answers
167 views

When will the ISS deorbit?

Is this undecided or still up for debate? Also, might it be delayed or put earlier for some reason? What about if we just abandon it?
user avatar
3 votes
1 answer
131 views

What's the highest latitude for a human spaceflight?

There are obviously many satellites in polar orbits or in orbits that extend to very high latitudes. There are obvious reasons to do this in terms of Earth observations, but there is probabably much ...
user avatar
  • 3,231
7 votes
1 answer
3k views

How did pages of Ramon's diary survive the Columbia disaster?

In early 2003, the space shuttle Columbia burnt up due to a failed leading edge on the wing from an external tank foam strike. All seven astronauts were killed. Yet, some pages of Ilan Ramon's diary, ...
user avatar
5 votes
1 answer
125 views

How does NASA count the order that people have entered space?

NASA has designated Matthias Maurer (crewmember of SpaceX CrewDragon 3) as the 600th person to fly in space. Leaving aside the question of whether those who flew with Branson and Bezos should be ...
user avatar
  • 1,143
1 vote
2 answers
178 views

Could astronauts jump from a spaceship onto a spacestation and how would it be like if yes?

I saw it happen in the videogame Alien:Isolation but not sure how realistic it was. I need help understanding some orbital mechanics for a sci-fi story that I am trying to write. The scenario I ...
user avatar
5 votes
0 answers
107 views

New spin on laundry day: How will ISS cope with washing machine vibration and angular momentum?

Although the ISS currently has no laundry facilities, NASA’s Glenn Research Center sponsored a washing machine design contest to do the drudgery during spaceflight. Plans have been made for testing a ...
user avatar
  • 6,410
5 votes
0 answers
70 views

How many hours/week on the ISS is spent on science vs maintenance?

This was asked in 2016 : Does ISS crew exercise time count toward their X hour work week? The answer as of 2016 was 40 hours / week for a crew of 6. But as noted there, when the crew size increases to ...
user avatar
6 votes
1 answer
89 views

First multi-pin electrical connection made in vacuum in space? Was it a part of a docking maneuver? Were precautions against cold welding taken?

Wikipedia's Docking and berthing of spacecraft says that The first spacecraft docking was performed between Gemini 8 and an uncrewed Agena Target Vehicle on March 16, 1966. Were multi-pin electrical ...
user avatar
  • 148k
23 votes
2 answers
6k views

Why aren't spacecraft and spacesuits pressurised to 2.5 psi (17 kPa) of pure oxygen?

Today 1 atm (101.3 kPa, 14.7 psi) with sea level composition is most commonly used on spacecraft to avoid fire hazards like in Apollo 1 (not that it would have helped the Apollo 1 crew as they couldn'...
user avatar
4 votes
2 answers
149 views

How long can astronauts wearing Dragon capsule suits walk around unconnected to water coolers?

At various moments in the NASA video NASA’s SpaceX Crew-3 Astronauts Launch to the Space Station astronauts are shown standing or walking or otherwise posing for the camera in their Dragon capsule ...
user avatar
  • 148k
8 votes
1 answer
785 views

Would it be feasible to decelerate a crewed vehicle from ~25 km/s only using the atmosphere of Mars (in the context of an "express transit")?

I boldly assumed it would some day be possible to accelerate a crewed vehicle from a refueling station (LEO, GEO, Moon orbit?) to ~35-40 km/s (with several stages) relative to Mars, so it would make ...
user avatar
5 votes
2 answers
166 views

Are there any currently studied or hypothesized crewed Mars missions that utilize the Space Launch System?

Space Launch System is finally beginning to see the light at the end of the tunnel. If everything goes smoothly (fingers crossed!), we should see the Artemis program kicked into full drive by the end ...
user avatar
7 votes
1 answer
500 views

Is it conceivable to visit L2 and service the James Webb Space Telescope?

Everybody is super nervous about possible hiccups or, goodness forbid, failure modes of the telescope. It is a fairly complicated machine. The telescope will be at the second Lagrange point, several ...
user avatar
11 votes
1 answer
1k views

Does NASA police urine production by astronauts?

Acute abdominal pain is a medical emergency which requires diagnostic facilities not available on board spacecraft. It could require emergency return from LEO or mission abort in cislunar missions. ...
user avatar
  • 6,410
2 votes
2 answers
177 views

Why do New Shepard's drogue chutes just "hang there" for ten seconds before deploying the main parachutes? What happens during that time?

The cropped and sharpened screenshots below are from the Blue Origin video Replay: New Shepard Mission NS-19 Webcast after about 02:03:16 (T+08:07) and show a ...
user avatar
  • 148k
2 votes
0 answers
80 views

What are the innovative aspects of New Shepard's "retro-thrust system on the bottom of the capsule"?

Background: The final velocity of the capsule after the main parachutes are deployed is a balance; it should always be slow enough that the crew is not injured and for reusable capsules and for space ...
user avatar
  • 148k
6 votes
1 answer
250 views

Why does the Buzz Aldrin Mars Cycler not play a larger role in planning for Mars exploration?

In 1985 Buzz Aldrin AKA “Dr. Rendezvous” proposed using a pair of space station habitats in solar cycler orbits as “Up and Down Escalators” for crewed Earth-Mars transfers. https://en.wikipedia.org/...
user avatar
  • 6,410
7 votes
2 answers
2k views

Are there any studied landing sites on Mars for a crewed landing?

I am currently working on a research project regarding the distribution of Calcium Perchlorate on the surface of Mars' effect on the human body, and for this I would like to look at the concentrations ...
user avatar
11 votes
0 answers
202 views

Has Buzz Aldrin’s Line-of-Sight rendezvous method ever been used?

Has Buzz Aldrin’s Line-of-Sight rendezvous method ever been used? Buzz Aldrin’s 1963 doctoral thesis https://dspace.mit.edu/handle/1721.1/12652 describes a line-of-sight (LOS) rendezvous technique ...
user avatar
  • 6,410
9 votes
2 answers
1k views

During orbital rendezvous, at what distance and approach velocity does the transition from orbital mechanics to “boating around” occur?

During the intercept (terminal) phase of orbital rendezvous, the intercepting spacecraft must use Proportional Navigation or Orbital Mechanics to develop an intercept course: all that counterintuative ...
user avatar
  • 6,410
4 votes
0 answers
146 views

Deorbit of ISS is a unique event. Are there plans for scientific observation?

The ISS deorbit will be unique. Not only because of its mass, but because the time, location and observing conditions can be accurately chosen. Instruments could be placed for detailed observation. ...
user avatar
  • 6,410
0 votes
0 answers
76 views

Have artificial quasicrystals ever been intentionally formed in space, or even attempted? If so, which was the first?

After asking Proposing a 2D quasicrystal; what are the necessary and sufficient conditions? (If it looks like a duck and quacks like a duck, or...?) I ran across Efficient design, accurate ...
user avatar
  • 148k
6 votes
0 answers
162 views

What to do until the hearse arrives: is there a designated morgue on ISS?

When I have asked, every commercial ocean-going vessel I’ve been on has provision for a refrigerated morgue. In the good old days, it was a cannon ball at your feet and six feet of sail cloth with the ...
user avatar
  • 6,410
3 votes
0 answers
129 views

Are there examples of spaceflight equipment being redesigned to remove right hand bias? (To make it less difficult to use left-handed)

Writing First left-handed primate on the Moon? First in space? got me thinking. The first left-handed astronaut may "break a barrier" but not all barrier-breakings result in an improvement ...
user avatar
  • 148k
7 votes
1 answer
1k views

First left-handed primate on the Moon? First in space?

The various world space agencies' crewed missions have had a long series of firsts, Yuri Gagarin's first being the grandparent of them all. Crewed space missions are recognized worldwide as barrier-...
user avatar
  • 148k
1 vote
0 answers
55 views

Indoor games played by Astronauts in Manned spacecrafts [closed]

What are the possible indoor games can be played by Astronauts on Spacecrafts as part of recreation? Playing cards, Chess, Table tennis, Scrabble etc. Since no gravity in space, there could be limited ...
user avatar
7 votes
1 answer
1k views

How will the Inspiration 4 capsule deorbit?

Soon the Inspiration 4 mission will launch and the crew will orbit the Earth for three days. How will the crew capsule then deorbit? Will it use the super/regular Draco thrusters?
user avatar
  • 357
21 votes
5 answers
5k views

Why is dust such a problem in microgravity? Wouldn't proper air circulation and filtration take care of it?

Dust and small particles in microgravity environments are generally regarded as bad, and items prone to generating these tend to be discouraged: Bread should be prepared quite differently, so that it ...
user avatar
  • 3,829
23 votes
3 answers
8k views

Can we write with chalk on blackboard in space?

There was an ongoing discussion on how fisher pen was invented independently for safer writing method. I was just wondering weather we can use chalk and blackboard in space? Also if there are ...
user avatar
3 votes
1 answer
106 views

Space astro/cosmo-naut rejection due to fine veins

Related to the question, Are all modern astronauts at least passable phlebotomists? Some people have clearly defined veins which allow for easy insertion of needles or cannulas, however, some people ...
user avatar
  • 10.5k
2 votes
1 answer
148 views

First space phlebotomy? When was the first human veinous blood sample taken in space?

phlebotomists are (nearly always) highly skilled people who safely and relatively painlessly poke our veins with big needles, take blood samples, then ask us to "press here". The process is ...
user avatar
  • 148k
18 votes
2 answers
7k views

Are all modern astronauts at least passable phlebotomists?

phlebotomists are (nearly always) highly skilled people who safely and relatively painlessly poke our veins with big needles, take blood samples, then ask us to "press here". The process is ...
user avatar
  • 148k
2 votes
1 answer
89 views

Following KRT-10 aboard Salyut-6, have there been any other radio astronomy observations from a space station or crewed capsule?

Space stations have certainly been equipped with infrared, visible, ultraviolet and X-ray telescopes for astronomical observation and optical and X-ray communications as well as particle telescopes ...
user avatar
  • 148k
2 votes
2 answers
304 views

Riding out an exploding rocket

It is known that at least some of Challenger's crew survived the explosion, while conscious. If the cabin had a parachute, they may have lived. This is despite the Space Shuttle stack being one of the ...
user avatar
  • 1,079
18 votes
5 answers
5k views

Exactly why does Starship need to be this big for interplanetary travel?

As discussed in several answers to Isn't Starship way too big? Starship's unusual size is due to it being intended for missions to the Red Planet. But why? Even a smaller ship could satisfy the ...
user avatar
  • 1,079
4 votes
2 answers
204 views

Accomodations for blood transfusion

Are there accomodations for blood transfusion (could/may be rare cases) on crewed space missions? That is, facilities for storing blood bottles for transfusion matching the blood group of astronauts. ...
user avatar
3 votes
1 answer
135 views

Earth to Mars (or reverse) Hohmann transfer orbits for the 21st Century

Is anybody aware of a nice graphic showing for the next 20-30 years or maybe the rest of the 21st century, the time periods for Earth to Mars launches? They occur about every two years, but I'm ...
user avatar

1
2 3 4 5
13