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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Have there been any spacecraft designs with a bilaterally asymmetric cockpit?

One of the things that makes the Star Wars films so visually distinctive is the asymmetric spaceships, for example the Millennium Falcon below whose cockpit is located in the top right corner as ...
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What does NASA intend to do about the Martian day in regards to the astronauts who go there?

The Martian day is about 40 minutes longer than an Earth day. What does NASA intend to do about the Martian day in regards to the Mars mission? Will they adjust the astronauts to their landing day ...
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Can jet engines be used to launch a rocket?

Following up on my previous question Can a VASIMR Plasma engine be used to launch a rocket?, I was told that VASIMR plasma thrusters are inefficient in an atmosphere. I then had the idea of using jet ...
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Do it yourself Spaceflight [duplicate]

So, what if I took a large scale model rocket and modified it to hold a person and outfitted it with a return capsule and navigational instruments. Could i launch it myself and be the pilot or what ...
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Can a VASIMR Plasma engine be used to launch a rocket?

When I was in primary school, I spent countless hours designing spaceships that probably wouldn’t work. It’s only now that I’ve stumbled across some of the old drawings and actually thought if it ...
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How much piloting did the Apollo astronauts actually do?

I understand Armstrong landed the Eagle manually, and Apollo 13 did a manual burn. Other than emergencies like that, did the Apollo astronauts do much piloting of the spacecraft.
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Astronauts' sleeping heart rate on the ISS

On Earth during non-REM sleep a person's heart rate goes down. Does the same thing happen on the ISS, or does the non-REM sleeping heart rate remain close to the heart rate of the astronaut while ...
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1answer
276 views

Solutions for transporting water to space

If water is the cheapest, and most usable radiation shield material for human space travel, how do we get large amounts of it to orbit?
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Do astronauts on the ISS refer to themselves as standing?

When on the CEVIS,(Cycle Ergometer with Vibration Isolation Stabilization) I'm assuming the astronauts would say they are sitting. When they secure their feet under a blue IVA rail do they say they ...
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Does space sickness determine when astronauts have their last meal?

During the shuttle program how long before launch would an astronaut eat? With almost 50% of astronauts experiencing space adaptation syndrome, and the possibility of vomiting, did the astronauts ...
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When might we get fourteen people in space?

The record for the number of people in space at one time is thirteen, which has been set a few different times (as discussed in this question, this other question, and this article). In order: March ...
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Do the astronauts hear noise in their headsets?

Even before the launch of STS-135 there is plenty of noise recorded while the astronauts were speaking to each other and the people on the ground. Do the astronauts hear the same noise that is ...
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Which build materials for a long-term crewed space vehicle? (no launch)

So the prerequisites for this question are, of course, strength vs mass. The lighter, the better, in all circumstances, however it still needs to be strong enough to have people inside it and to hold ...
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What exactly makes PHP CLI fundamentally unsuitable to power all the math on board a space craft?

Let's say that there is an eccentric multi-trillionare who made his fortune by coding a very popular service in PHP. He knows it very well, and has such a love for it that he makes a rather unorthodox ...
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Ion Drives specific impulse somewhat of a false economy?

I've been working through a thought experiment with a friend of mine, with some of my previous questions already being (very helpfully) answered on here :) Here's the current issue I have though - ...
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1answer
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Optimal shape for a spinning ship/station - downsides of spheres? (Radiation shielding)

What is the optimum shape for a spacecraft? So I've already read this link, and a few other similar ones, and the main issues I am already aware of... but yet it still seems like a large majority of ...
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Algae Bioreactor for O2 and CO2 (and food?) - Any data on required size and power requirements?

I believe that the requirements for a single persons $\require{mhchem}\ce{O2}$/$\ce{CO2}$ balance run somewhere in the region of $8m^2$ of algae, which would seem to be possible in a single $\approx ...
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Looking for fuel mass per kg payload data for Ion drives

I'm looking for some information on what the fuel/propellant mass per kg of payload is for ion drives. Hall X3 or VASIMR or whichever is currently the 'best' that we have available. This isn't for ...
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Looking for figures for contemporary interstellar engine options

So I have already done... a lot of reading on this subject lately. A lot. You wouldn't believe. My maths is... functional, probably far above 'average', but when it gets into the realms of the 'rocket ...
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1answer
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What would be the cost of a thorium reactors at the core of a large starship? [closed]

Thorium is a high power substance that can contains large amounts of energy in a small space. How much would it cost to install and maintain one on a large starship? As well as using solar panels, ...
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Crew Positioning in ISS during Reboost

Several questions address the reboosting procedure for the ISS. When the shuttle reboosted the station, apparently the entire ISS was modeled on the ground and pre-programmed in, down to the masses ...
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Have there ever been any incidents where something valuable was unintentionally throw out with the trash?

In "What do astronauts do with their trash on the ISS?", a commentor asked the title question and was encouraged to make it a new question, but apparently never did. The linked question is referring ...
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How can an Astronaut survive for six days inside a Spacesuit?

In the video #AskNASA | What are the Next Generation Spacesuits?, spacesuit engineer Dustin Gohmert says the following about the Orion Crew Survival Suit (Orange Spacesuit): This suit is also ...
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Why weren't there any manned moon landings in the recent decades? [duplicate]

The last time a human landed on the moon was back in the 1970s. Why haven't there been any manned moon missions since? I understand that the US deemed them less important after winning the race to the ...
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How are astronauts in the ISS protected from electric shock?

On Earth, most of the electrical appliances having exposed metal parts, such as electric iron, are grounded, to protect the user from electric shock when an uninsulated-wire accidentally comes into ...
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How long to get to Geostationary Orbit? [closed]

Fictional Planet has a gravity of approximately 0.68g Geostationary orbit of said fictional planet is approximately 32,000 km above the surface according to online calculator. Spacecraft capable of ...
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1answer
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What does this NASA administrator's tweeted statement mean? What is the context? [closed]

Background: Teslarati's NASA head calls out SpaceX CEO Elon Musk over Starship event in bizarre statement might serve as a resource for answers if the question is successfully reopened. Question: ...
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Term used to identify the blue bars/rails in the ISS?

The interior of the ISS is filled with blue bars used by astronauts to secure their feet and remain in one place. Does NASA have a term for these?
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Space adaptation syndrome compared to BPPV (vertigo)

Has there ever been any discussion comparing the typical SAS experience and benign paroxysmal positional vertigo (when tiny calcium particles clump up in canals of the inner ear). Having recently ...
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1answer
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Tracking the Soyuz MS-15 approaching the ISS with binoculars

Next Wednesday, September 25th, the Soyuz MS-15 will be launched from the Baikonur cosmodrome. I guess the trip to the ISS will be long (6 hrs to 24 hr) as usual. I want to see both the ISS and the ...
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Aerosol products in space

I am assuming aerosol products are not used inside the living environment of a spacecraft while it is microgravity. Is that correct, or are there examples of such products being used while an ...
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Did Apollo carry and use WD40?

It appears from this question that Apollo missions carried Duct Tape and used it for in-flight fixups. Did they carry the other half of the "Universal Repair Kit" - WD40 (or similar)? If so, was it ...
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Were there any mission goals for the Apollo 18, 19, 20 flights?

I recently learned that Apollo 18, 19, and 20 missions were planned before they were canned due to budgetary reasons. I've only been able to find out the projected landing locations for these (...
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Help Finding A Book

I am trying to find the book that contains the following chapter: https://www.faa.gov/about/office_org/headquarters_offices/avs/offices/aam/cami/library/online_libraries/aerospace_medicine/tutorial/...
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When a coronal mass ejection (CME) hits a spacecraft, from which direction will the particles come?

I have long assumed that when a CME (aka solar mass ejection, SME) hits a spacecraft, its particles will be coming in a straight line from the Sun. I've learned recently that it isn't so direct, and ...
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Has USSR/Russia launched humans on any rocket not derived from R-7?

The Soviet Union's first crewed launch, Vostok 1, was on a Vostok booster, derived from the R-7 ICBM and Sputnik satellite launcher with an additional stage added. The Soyuz boosters used today by ...
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Could NASA go back to the Moon? [closed]

Even after launching so many space missions, including the one which led Man to the Moon (Apollo 11, July 1969), NASA made several mistakes even in the space programs that followed. For e.g. Space ...
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Soyuz reentry acceleration profile with timing

I am looking for reentry Soyuz acceleration profile with timing. I was able to find graphs for ascent, but failed to find anything related with descent. The only thing I've got is Andreas Mogensen ...
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Where can I find Captain REFSMMAT?

One of the longer NASA acronyms is REFSMMAT (REFerence to a Stable Member MATrix) Ed Pavelka was one of the flight controllers who occupied the FIDO console at mission control. As a way to cement ...
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What was the volume of the Space Shuttle orbiter, not just the crew cabin or cargo bay but the total volume of the entire craft?

For context, after an in-depth Google search, I asked the question "What was the volume of the Space Shuttle orbiter, not just the crew cabin or cargo bay but the total volume of the entire craft?" on ...
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What makes Space Adaptation Syndrome worse?

Are there any particular movements or activities that exacerbate SAS, space sickness?
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What is the longest manned re-entry from Low Earth Orbit ever recorded?

What is the record for the longest amount of time that a manned spacecraft has taken to re-enter from low Earth orbit (LEO)? I would prefer the duration between the beginning of the re-entry burn ...
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3answers
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What are the biological effects of a toe-to-head force gradient upon a human over the long term?

This question pertains to the notion of constructing rotating spacecraft and habs for human use in space in order to mitigate the effects of microgravity. Such craft have been a staple of many sci-fi ...
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What are the benefits of cryosleep?

NASA is working on a so-called 'Cryosleep Chamber', but why do they need it so badly? There must be a lot of benefits attached to this technology..
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Human-rating the Saturn V using modern standards

Would a complete Apollo-Saturn stack (like e.g. AS-506) be human-rated according to the latest human-rating process (NPR 8705.2C) of NASA? If not, what are the biggest show-stoppers? This question ...
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Is there a term for the activity of weightless astronauts hanging out on walls or ceilings?

Weightless astronauts often sit, stand, walk, or sleep on (or near) surfaces that (with gravity) we would normally call walls or ceilings. I reference such a phenomenon in my comment here: I would ...
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Project Mercury capsule switch orientation

I noticed that the majority of the toggle switches in the Mercury capsules move in a left-to-right manner. This seems unusual to me, since Gemini, Apollo and the Shuttle all predominantly use up-down ...
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Have any humans orbited the Earth in anything other than a prograde orbit?

As per the title, have any humans been launched into an orbit around the Earth which is anything other than prograde? E.g. retrograde or polar.
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Is the vestibular system ever useful in spaceflight?

The Vintage Space video Eleven Deaf Men Helped NASA Leave Earth describes a number of different NASA experiments done on human subjects who had damaged vestibular systems due to childhood illness. ...
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What were the “pills” that were added to solid waste in Apollo 7?

In the BBC News Worldservice podcast 10, 9, 8, 7: The dramatic missions that made the Moon landing possible told by retired astronaut Nicole Stott (Expeditions 20, 21, STS-128 and STS-133) after ...