Questions tagged [spaceships]

For questions involving implemented theory or technology for travelling through space. Consider also [space-travel]. See also the tag information (click "info") for more details on when this tag applies.

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3 votes
2 answers
278 views

If the current population of humanity along with necessities could fit on a spaceship, how large would that ship need to be?

Here's the picture. Earth is beyond saving and is too polluted to be habitable anymore. My plan is to have this ship built on the moon, using materials from our asteroid belt. A bit of a problem is, I'...
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10 votes
17 answers
2k views

How might derelict space ships/stations be only partially salvageable?

My setting is a fantasy where the average space-trekker subsides on scrapping derelict ships from a distant golden age in the past to maintain their own, with only the corporate rich being able to ...
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6 votes
7 answers
2k views

Hydroponically growing animal feed in a space ship

Same game i mentioned in my other questions. Artificial gravity, robotic harvesting/replanting, and plenty of energy are available on the ship. The farming block is 50x70x10 meters in total but i ...
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4 votes
6 answers
1k views

Countering Free-Electron Lidar?

In my hard sci-fi setting, there is a technology called free-electron lidar, usually deployed in space. Edit: Essentially, it is a lidar with the ability to change its laser frequency. One free-...
4 votes
4 answers
82 views

Theoretically, how well could endothermic chemical reactions work as a heat radiation system in space?

I was thinking about the problem of waste heat in a large military space craft. It seems beyond a certain technological point, the ability to dump waste heat becomes the largest problem in quickly ...
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-2 votes
1 answer
58 views

Power Source in VENUS [closed]

**What is the best Power Source to use in VENUS to generate electrical Power by using the properties of the VENUS land? ** I was thinking about the RTG but I found a lot of disadvantages of it.
-1 votes
3 answers
221 views

An alien spaceship is predominantly "white" inside. What color does a human see this as? [closed]

Human-made space-travelling objects seem to follow certain colour palettes. For example the interiors of human space stations seem to have been predominantly white, or a similar neutral shade like ...
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3 votes
3 answers
248 views

Coilguns as spaceship thrusters second attempt

This is a second attempt for this question, the first time i put in too many different things that ended up derailing the question. I'm in the early stages of designing a scifi game and want to use as ...
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16 votes
14 answers
3k views

Why can my spacefaring civilization maintain, use and even adapt their tech, but not manufacture it themselves?

What could allow a spacefaring civilization to actively construct and maintain ships, stations and weapons, but stop them from actually manufacturing the individual components? First, let me try to ...
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5 votes
2 answers
196 views

Is it possible to Magnetize spaceship corridors to counter Aliens with iron weapons?

/-Transmission Received || Ansible-Sector-74 || To Prohibited Subject 248029:BA7-/ Trade Route Attacks With the Triptite Federation being gently convinced to open their borders for trade, merchants ...
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-2 votes
3 answers
220 views

19th century British moon landing [closed]

In the aftermath of the Monroe doctrine, the British empire decided to expand heavenward. As the nobles, captains, empiricists, electricians, and mechanics explained to the Majesty, technological ...
16 votes
11 answers
4k views

How would a blind intelligent species navigate space?

I am writing about my own fictional cluster of solar systems where one planet had many environmental circumstances that lead to the majority of the planets species evolving to be blind and rely on ...
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0 votes
3 answers
57 views

Should cryo/hypersleep sections be placed in a rotating habitat/centrifuge? [closed]

So I have a lost colony ship that's been wandering space for "many many many" years. The entire crew of 500 is placed in hypersleep all those time. I'm designing a colony ship(unfinished) ...
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5 votes
6 answers
3k views

Field Promotion to Captain [closed]

In a future space navy universe that is heavily based on modern wet navies, would it be acceptable for a vessel XO (rank of Commander) to be field promoted to Captain from a single Fleet Admiral? To ...
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14 votes
4 answers
2k views

Pro's and Con's of a starship with a tractor configuration?

I'm working on a lost colony type story where 500 colonists have and their ship went missing in interstellar space. I thought of designing a realistic starship design and kind of remembered a quirk ...
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4 votes
4 answers
199 views

Where should I put the bridge of a warship? [closed]

I am currently designing spaceship for my world. I want to use good ol' physics, so no handwavium here. I assume that my crew will remain in weightlessness during maneuvers. Since there is no up and ...
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5 votes
5 answers
2k views

Binary system travel time for war

To set the stage, 2 opposing groups exist in the binary Alpha Centauri system. The 2 stars have a roughly 80 year orbit that brings them as close at 11 AU together and as far as 36. A ship at a 1g ...
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1 vote
3 answers
115 views

would this Lenz law based inertial dampener work?

Basically this "Inertial Dampening" systems works like a magnet falling though a cooper pipe https://youtu.be/5BeFoz3Ypo4 But replace the falling magnet with a crew capsule surrounded by a ...
10 votes
5 answers
528 views

Practical speed limit for torch-ships

This is for a sci-fi universe depicting an interplanetary civilisation using fusion torch-ships. Think "1G for days". For a run to Neptune at 1G the peak velocity at turnover works out to ...
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7 votes
2 answers
151 views

Ideal materials for the outer layer of a whipple shield

https://en.wikipedia.org/wiki/Whipple_shield What I'm looking for is the best possible materials for the outer layer of a whipple shield. From what I understand, the outer layer turns a hypervelocity ...
7 votes
3 answers
1k views

How much safer would a spaceship clad in ice be?

Seeing as the brand new James Webb Space Telescope's main mirror was recently hit by a micrometeroid, I figured that now would be a good time to ask about spaceship hull protection. When we think &...
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8 votes
11 answers
2k views

Is this concept for very low energy space travel plausible?

Humanity is on its last lap. A once great empire has been reduced to a single Dyson sphere around the dying sun, and most of the matter of the solar system has already been incorporated into this last ...
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4 votes
5 answers
998 views

How would a spaceship not affected by gravity navigate between planets?

Presume there exists a metal called X-matter that has all the properties of steel, except it is repulsed by normal-matter instead of attracted. (For instance, a block of it would accelerate 9.81 m/s/s ...
7 votes
5 answers
1k views

How would modern militaries respond to a large number of unknown spaceships suddenly launching towards the moon from Earth? [closed]

I'm working on a backstory for a science fiction setting and one of the factions are meant to have started out as a worldwide network of political dissidents operating in a sort of parallel ...
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2 votes
4 answers
202 views

Structural integrity of massive space vessels and mobile megastructures (>1.5km)

I'm working on a worldbuilding project, and so far I've been putting scrutiny into my larger vessel designs, notably a 1.7km long spaceliner capable of landing at specific launch facilities. Someone ...
2 votes
3 answers
322 views

Is a Bussard Ramjet for collecting water possible

My spacecraft's propellant is water, so an idea I came up with is that it would melt icy bodies in the rings of gas giants into water vapour. Is it possible to collect water vapour with some sort of ...
2 votes
3 answers
133 views

What material should a whipple shield on a lighthugger be made from? [closed]

I read Songs of a Distant Earth and in the book ice-water is used as the shield on a ship that travels close to the speed of light. Realistically, what material might actually work to protect a ship ...
28 votes
26 answers
6k views

Why are my combat spacecraft crewed?

In my universe, humans are pretty good with AI and have some experience in space combat, as nations fought for resources. Regarding the world, humanity remains in the solar system and is in space ...
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10 votes
7 answers
2k views

What would an alien spaceship need to have to be undetectable to us with our current technology

This alien spacecraft would be orbiting around earth at 300-400 km, it has a similar size to the ISS, and it has to be undetectable with our current technology. I assume that it would prevent emitting ...
2 votes
2 answers
338 views

How do Winged Sapient Creatures Keep from Panicking in Zero G?

I have plenty of space fairing aliens with wings that are capable of flight. I can’t help myself it’s just a cool feature for an alien and a have. But I want to adress A potential issue in getting a ...
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1 vote
3 answers
141 views

A rocket powered by Francium(element 87)?

Francium is the most reactive of all alkali metals, in theory. It is so rare because its half-life is so short. But, using the Theory of Relativity, if you speed up the Francium in a particle ...
4 votes
1 answer
76 views

Magnetic Flux Pinning Whipple Shields?

Would it be possible to have a collapsible whipple shields that can extend far out of a spaceship and be held in places with super conducting magnets? My rough idea is to be able to absorb more damage ...
4 votes
7 answers
2k views

When are Turreted Railgun better than Spinally-Mounted Railguns?

When and why are spinally-mounted railguns superior to turreted railguns for space combat? Is it a power issues(longer barrels could probably be mounted spinally, and the longer barrels might allow ...
6 votes
2 answers
203 views

Using coilguns or VASIMR as thrusters in a game

i'm in the early stages of designing a scifi game and want to use as little handwavium as possible (without ruining the fun). The first part of the game takes place in the asteroid belt and includes ...
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4 votes
6 answers
279 views

Reaching Proxima Centauri within 10 years of ship time in the year 2300

For scenaristic reasons, my colonization spaceship needs to reach Proxima Centauri within 10 years of ship time. How do they do that? I'm starting to get a headache over this. At first I thought the ...
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0 votes
4 answers
231 views

What would a spaceship look like if our design aesthetic had not changed since 1890? [closed]

I am struggling to visualize the space battleships of a human civilization which made it into space in the mid 1800s and have progressed to a level of technological development similar to that ...
2 votes
2 answers
86 views

Tracking a high-speed vessel in Sol

I am trying to establish whether humanity could detect and track a fast-moving alien ship arriving in the Solar System and whether we would get some sort of "advance" warning that it is ...
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6 votes
3 answers
1k views

Is it possible, at least in theory, to travel between two spots in the universe through an Einstein-Rosen bridge?

I'm using as a means of "long-distance travel" the generation and exploitation of Einstein-Rosen bridges, through quantum entanglement of black matter in different points of the galaxy, as a ...
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7 votes
3 answers
318 views

Reactionless Drive WITHOUT Breaking the Universe?

Space is hard, and making a spaceship engine powerful enough to do interesting things requires an absolutely bonkers amount of energy. I know that lots of authors (including me) think of trying to ...
20 votes
9 answers
5k views

How Does Orbital Warfare Work?

Let's say in the near future(so no fusion drives or anything exotic like that, VASIMR engines are the "best" engines placed on ships, not on expendable weapons), two space ships, armed with ...
4 votes
2 answers
131 views

Is a universal land and launch spacecraft theoretically possible?

Nearly every science fiction story features a craft which lands on a planet, allows egress to the surface, and then leaves the planet. Logistics is almost never a part of the story. In considering ...
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5 votes
2 answers
156 views

Is it radio silence between 2 Alcubierre drives?

Suppose we grant a 1 time scientific miracle for exotic matter to power Alcubierra wrap drive, then could two such drives communicate with each other? The drive discharges exotic matter particles ...
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2 votes
4 answers
131 views

XO of a naval cruiser leads an internal investigation

In a future space navy setup, a Long Duration Mission cruiser experiences a mysterious death while in deep space. A member of the crew mysteriously dies while at their station and causes a series of ...
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10 votes
3 answers
1k views

Fusion drive in a spaceship: What would the damage be if such a ship were to be attacked?

I've recently read some news about progress in building plasma reactors. The technology is basically that plasma is held by magnet field because otherwise, it would melt everything it touches. It has ...
3 votes
3 answers
193 views

Zero propellant interplanetary travel [closed]

I am creating a world where there is an interplanetary network that allows planetary commuting to and from all planets and major moons in the solar system with 0 propulsion being supplied by the craft ...
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1 vote
0 answers
114 views

What things should I consider about TITAN while Landing, in terms of geography?

What are the challenges to landing on Saturn's moon, Titan, with respect to atmosphere and geography? Consider we are landing a team of scientists, in a ship based geometrically on the Jupiter of Lost ...
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7 votes
3 answers
446 views

Could gravitational wave interference patterns be used for long range sensors detecting advanced spaceships?

Low energy, fantastic range From HDE in another topic, I learned gravitational waves have an intensity which is inverse proportional to distance, not square distance, like in electromagnetic fields.. $...
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4 votes
5 answers
179 views

How does a spacecraft function despite it's own (non-centrifugal) artificial gravity?

Haven't done shipbuilding in a while so let me start simple. Sci-fi spacecrafts all tend to have some unexplained method of generating artificial gravity, which keeps the crew nice and cozy. The more ...
  • 9,712
3 votes
6 answers
273 views

How does one detect a warp bubble LYs away without years of delay?

This question relates to a space-strategy game I'm conceptualizing. The game is supposed to be somewhat realism-oriented, except for the existence of Alcubierre / Star Trek warp drives and the like. ...
4 votes
3 answers
107 views

Debris Field around space wreckage

I am writing a story in which a crew is investigating a wreckage of two space vessels that collided at enough speed to disable the vessels without completely annihilating the two structures. The ...
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