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Questions tagged [spacecraft]

Questions regarding the craft that house humans or equipment during space exploration.

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1answer
808 views

Space Flight Simulator [duplicate]

There are multiple simulator-games around (orbiter, lunar flight), but how accurate they are? Is there "more scientific" (not a game) simulator? Q: What is the most accurate and commercially ...
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1answer
154 views

How the interface between de-spun platform and rotating parts of a spacecraft with artificial gravity could work? [duplicate]

You might have seen large rotating wheel space stations with central de-spun hubs or platforms in sci-fi movies like The Martian. My question is, how could the sealing between the rotational and ...
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1answer
180 views

Is moon all natural? [closed]

I really like the science and space related thing and I was reading somewhere on the internet that the Moon is set in place 4.53 billion years ago. So my question is Q:- Is Moon all natural? or is ...
12
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1answer
2k views

What are quaternions and how are they used to represent spacecraft dynamics?

The title says it all. Quaternions are widely used to represent the orientation of a spacecraft. Why is that, and how do quaternions compare to other alternatives?
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1answer
133 views

Is there any safety advantage/disadvantage to a particular attitude of a vessel in space?

Is there any safety advantage/disadvantage to a particular attitude in space - lined up with the sun, sideways, tumbling or spinning? Assuming a long cylindrical space craft on a long journey within ...
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0answers
178 views

What are the future prospects for spacecraft autonomy

edit: Possibly helpful information in Gizmodo and YouTube. In general spacecraft are supplied with propulsion systems often with substantial redundancy in the plumbing and engines or thrusters so ...
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3answers
582 views

Is it pretty much a given that all deep-space spacecraft have gimbaled engines?

I'm starting to see a pattern. Both this answer about Cassini liquid propellant engine and this answer about ion thrusters discuss a particular necessity for gimbaling engines to keep thrust aligned ...
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1answer
383 views

Is Cassini's 183rd burn; some kind of engine record?

I've just read that when Cassini makes its first close pass of Saturn's F-ring on December 4, it will be the 183rd engine burn which sounds like a lot for orbital maneuvers using a spacecraft's main ...
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1answer
331 views

Cassini's main engines' burns “can be blow-down or pressurized (with Helium)” - why?

I just read that when Cassini makes it's first close pass of Saturn's F-ring on December 4, it will be the 183rd time the engine fires. I googled Cassini's engine and found this site which has a cool ...
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2answers
508 views

Does Cassini have one or two identical main engines - if two, how does that work?

I just read that when Cassini makes it's first close pass of Saturn's F-ring on December 4, it will be the 183rd time the engine fires. I googled Cassini's engine and found this site which has a cool ...
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6answers
428 views

What would be a few challenges to build a landing strip on mars?

So we are spending a lot of money to get things landed vertically. Its a challenge, and obviously tough too. So here is the idea. Get to mars. land over there, no need to return to earth (if no ...
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0answers
159 views

Mars curiosity rover

I am trying to get information on the maxon drive motors on the Curiosity Rover. Does anyone A.) know what model of DC brushless motors are used B.) what kind of gear speed reducer is used. Is it a ...
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1answer
153 views

Could an Alien spacecraft sneak into the solar system without us noticing? [closed]

I don't mean just flying through it, but entering it and staying around the Kuiper belt. Could they decelerate from something like .1c without us detecting them?
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1answer
378 views

How will GOES-R simultaneously point some instruments down at Earth and others sunward?

GOES-R is scheduled to launch soon and put in geostationary orbit over North America for high bandwidth continuous monitoring of Earth, with only 120 minutes per year interruptions caused by ...
2
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1answer
145 views

Russian space observatory Spektr-UV

Where can I find more detailed information about Spectr-UV? I'm interested to find an in-depth article and/or images of it's components. It seems that it could have offered a unique capability, why ...
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2answers
394 views

Why not a digital camera?

Why do we not add an everyday (with some modifications for protection obviously) digital camera to spacecraft so that we can get a (semi) truecolor image of what they are seeing? I was reading about ...
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2answers
503 views

How many people have returned to Earth in a different type of vehicle than the one that launched them into space?

Recently we had the 15 year anniversary of Expedition 1 of the ISS. That particular crew launched in a Soyuz (TM-31) and returned on a Space Shuttle (Discovery, STS-102), which I found a remarkable ...
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6answers
5k views

Do windows in space stations, the space shuttle, other spacecraft have practical usage?

As we know, cars need a front window because drivers need to see the road to control the car, but how about the windows in space shuttles? As far as I know, the orbits of ISS or other space devices ...
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1answer
105 views

Does electrostatic discharge pose a threat for docking or capture in a 700km polar orbit?

Is there any charging / ESD threat for a docking program at 700 km orbit?
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8answers
4k views

Puzzler - which spacecraft(s) incorporated real wooden structural elements?

Not a trick question, but a real puzzler - which spacecraft or spacecrafts incorporated real wooden structural elements?
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1answer
139 views

Can Li-ion batteries replace parts of the physical structure of a spacecraft, such as the hull of a crewed spaceship?

Batteries contain metals with some structural rigidity themselves, and need encapsulation anyway. Could the batteries a spacecraft needs be used to build part of the physical structure, such as the ...
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0answers
67 views

What would astronauts do in the unlikely event an hole appeared on the side of their spacecraft? [duplicate]

This never really happened in the Apollo missions, or any other rocket launch... but what would theoretically happen if something exploded (let's say, the oxygen tanks) and caused a hole in the side ...
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1answer
566 views

Have spaceships been tested to withstand bullets?

This answer on Worldbuilding (to "How to solve the old 'gun on a spaceship' problem?") posits that ISS can easily withstand a bullet fired from a handgun Our current micrometeorite shielding can ...
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1answer
368 views

What is the procedure for naming spacecraft?

This is something I've wondered about quite frequently. Is there really any common naming procedure used to name spacecraft? It seems that some spacecraft are named after greek and roman gods, such as:...
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1answer
2k views

Why was Kepler's orbit chosen to continue to drift away from Earth?

The Kepler telescope was launched from Earth on March 7 2009 and placed in an independent orbit around the Sun, with a semimajor axis of 1.0132 AU, period of 372.53 days, and an eccentricity of 0.036 ...
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0answers
105 views

If the ISS hull were ferromagnetic what kinds of problems would that cause?

The question ISS Electromagnetic anchoring asks if the hull of the ISS were ferromagnetic, which would allow astronauts on EVAs to use magnetic grapples to assist in moving around. The answer sadly, ...
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2answers
901 views

What does the abbreviation “MS” for the current Soyuz version name mean?

A quick search the meaning of the abbreviations for the previous versions of the Soyuz spacecraft easily tells me their meaning: Soyuz T. 'T' is for транспортный, ...
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1answer
391 views

Which is the longest distance traveled by a space craft?

Which is the longest distance traveled by a space craft? Manned or unmanned? I believe it's Voyager, but I am not sure about the distance it traveled or is still traveling. I believe the mission ...
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0answers
61 views

Neural networks applied to micro satellites missions [closed]

I'm really interested in micro satellites, but I'm a beginner. So, for the year-end project of a course called "Neural networks" at University I want to do something related with this. I searched a ...
6
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2answers
259 views

Spacecraft onboard sounds

Can anyone link me to some resources on the background noises heard inside gemini and apollo capsules? Even the LEM is of interest. I'd like to know what the thruster firings sounded like, and if ...
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3answers
993 views

How close humans are for interstellar travel? [duplicate]

I have heard many times about interstellar travels. Are centrifuge space craft (artificial gravity) and warp drives technologies being built or still it is just concepts ? Nearest start system is ...
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0answers
102 views

Will there be torques on spacecraft due to interaction of magnetic torquer with the residual magnetic field of the spacecraft?

Assuming the magnetorquer and the field generating electronics are both rigidly fixed to the spacecraft cube. Reference to any supporting papers/articles would be great. Thanks. Would the residual ...
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2answers
682 views

When astronauts travel to the ISS, how do they not get bored?

What do astronauts do while traveling to the ISS so they don't get bored? I know they must check equipment and do science experiments, but what they do in their free time?
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2answers
519 views

How are spacecraft engineered to prevent overheating?

Been reading about early space exploration again, especially Sputnik 2 (1957) and Venera 1 (1961). Both of these suffered from overheating. It strikes me that a metal object will easily "absorb" the ...
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1answer
196 views

Electromagnetic accelerator in space

Let's imagine there are already interplanetary spacecrafts and travel. Would it be possible to create electromagnetic accelerator somewhere in the outer space? It would work this way: There would be ...
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1answer
214 views

Could an interstellar spaceship be made up of several ships launched from Earth, or would it have to be built in space? [closed]

I just watched the movie 'Interstellar' for the first time. Assume we have reached the point (in real life) where we are able to launch interstellar spaceships meant to colonize other planets. To do ...
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1answer
130 views

A Space Gravitational Bus Route - is there such a thing? [closed]

Don't know if this is already been thought of, if it has it would be cool to know the name? Fundamental problem in how the public sees space transport, the problem is we see it as firing a rocking ...
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1answer
131 views

How to know when JPL Horizons is updated with new Juno spacecraft trajectory?

I "watched" Juno's flyby of Jupiter using the simulation in the NASA's Eyes app on my laptop, and later saw the good news in this tweet. Now I want to do a "flyby in Python". Using the setup (shown ...
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2answers
74 views

For the purposes of attitude control, do gyrodynes need to be placed at the center of mass?

Gydrodynes, aka control moment gyroscopes, are spinning wheels that are torqued at their axis (a motor pushes the axis to make it a different direction) for the purposes of creating counter-torque ...
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2answers
138 views

Does knocking on walls produce a different sound when adjacent to a vaccum?

If I was to knock on a wall or door between a pressurised room and a vacuum, would that sound different from knocking on a wall or door of the same material between two pressurised rooms? If not, ...
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2answers
1k views

What is this on the craft from the Apollo 17 mission?

For me it looks like water droplets but, I doubt thats the case in space. Also I don't understand why this should be a crafts surface feature. wouldn't one aim to design a spacecraft as smooth as ...
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1answer
143 views

What thermal effect does the Sun have on spacecraft that are roughly the same distance from the sun as the earth is?

What thermal effect does the Sun have on spacecraft that are roughly the same distance from the Sun as the Earth? Specifically, do spacecraft need to constantly rotate so that one side doesn't get ...
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3answers
4k views

What does space look like from space?

We've all seen tons of images taken by astronauts and spacecraft, but many times they are artificially colored, include invisible light spectrums, or have a lot of contrast. I would imagine, without ...
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1answer
152 views

Radioactive Embrittlement of Metals in Space

Metals items used in certain types of nuclear power station can become brittle over time due to exposure to radiation. Given the amount of cosmic radiation, is embrittlement of metals on space craft ...
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1answer
186 views

How will JWST be serviced?

Hubble, besides the initial high-profile COSTAR, was upgraded many times giving essentialy a new instrument with the same heavy/expensive glass. It was set in LEO for that purpose even though it has ...
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1answer
182 views

Who built Juno's chipsets?

Lockheed Martin was responsible for the construction of Juno. But I was wondering who built the chips Juno uses for its onboard computers, and whether or not they are radiation hardened. I would ...
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4answers
571 views

The plane of the orbit of Juno around Jupiter is not the ecliptic plane. How did it get into this plane?

Did Juno start off its course on the ecliptic plane from the earth orbit and then left it at insertion to Jupiter's orbit over its north pole or it was always in that plane?
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1answer
454 views

How does NASA communicate to spacecrafts? [duplicate]

In Our communication systems we have limitations like signal strength to achieve communication between two points in the same country we have to build towers / etc .. my question is how does NASA ...
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5answers
4k views

Why haven't telescopes been sent to other planets?

Why haven't we sent telescopes to other planets? Wouldn't we be able to see further? Aren't we interested in seeing further without having to send a probe that will take years to get to where it's ...
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0answers
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Escape velocity of Alpha Centauri B: What is it? [closed]

So, assume that at one point in the distant future, humanity has a docking facility/military observation post in orbit around the star of Alpha Centauri B for.....well, military purposes, which could ...