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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6
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7answers
383 views

Earth-killer challenge

Related to this question. A lot of the discussion there got sidetracked from the question of orbital physics, into questions about alien motives and what the humans would do, so I want to start a new ...
14
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9answers
2k views

Mechanics of infrequent meteor attacks

There is an Earth-like world, at a level of technology similar to the ancient Romans. Roughly every 20 years, one of the largest, most prosperous cities in this world is annihilated by a meteor ...
10
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7answers
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Could a combination of cheap energy and powerful thrusters turn good aerodynamic design into something that isn't always worth the cost?

For a science fiction setting I'm working on, I'm trying to make a clear division between ships made exclusively for space flight, atmospheric flight and dual-purpose ships that can fly in both. The ...
9
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9answers
2k views

Could near light speed space ships be used to destroy a civilization?

I once saw in a reply to a comment to a youtube video, someone suggesting that as a fermi paradox solution, once civilizations get the ability to create near light speed spaceships, a few nutcases are ...
3
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1answer
73 views

How do I get Ironclads/Submarines lifted into an in-atmosphere wormhole that leads into another identical one?

I am working on some lore for an overhaul mod, but I want to try to stay away from handwavium as much as I can, at first. There's two terran planets connected by many stable wormholes, the most ruckus ...
2
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1answer
95 views

Space station stable population

An isolated space station that has 18 lab grown babies every day. The average lifespan is 120 years. What is the total size of the population for the birth death rate ratio to be even? Im having a ...
3
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3answers
210 views

What would the economy of a nomadic, spacefaring civilization look like? [closed]

For a writing project, I'm trying to break the mould of some others involved and depict nomadic people who travel in enormous colony-ships, searching for life-bearing worlds similar to their own and ...
1
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1answer
457 views

What would be a good engagement distance for space ships, assuming it took place in the sol system

(Edited due to oversights and ridiculous numbers) So I was curious about this. I know similar questions have been asked but they all have specific parameters that are different from mine. All ships ...
17
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10answers
6k views

Why should humans kill this space creature?

I thought about a fictional universe where humans populated most of it. I was thinking about a space creature that roams from planetary system to planetary system and I created this thing: They are ...
12
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16answers
3k views

How can gravity shielding be defeated?

In this science fiction universe, that has somewhat tough science in it, paragravity is an established technology that is used to its fullest potential. Which lies the problem where warfare is ...
5
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10answers
2k views

Could a spaceship be efficient enough to be invisible without breaking physics?

Spaceships give out a lot of heat, due to the fact that things produce heat and that heat must go somewhere. But, could a device exist in space that is efficient enough that the heat it produces (and ...
4
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3answers
300 views

Can we have a civilization living at close to the speed of light?

Imagine many ships traveling close to the speed of light. If they diverge paths to explore distant galaxies, they could calculate their travel so that the same amount of time passes for all ships. ...
3
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3answers
321 views

In space is it better to use cannons instead of railguns?

A problem in space is a lot of the time heat dissipation. Another big problem is if you are set off course by the forces that the gun shooting inflicts on your spaceship. For the same speed and ...
3
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5answers
1k views

Why does my arcology let light in, when it was originally a sleeper ship

In my story the protagonist lives in an arcology, but this is not just any arcology. Over a 100 years ago, a global war fought between those who sided with a massively distributed and rather 'insane' ...
0
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2answers
94 views

Using a wormhole to get propellant in space?

Would it be possible for a spaceship to fly through space with the propellant stored off-ship through a wormhole? The propellant-tender end of the wormhole wouldn't need to move, so the ship-end ...
6
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2answers
568 views

How would a dirty space station with no artificial gravity look?

Just a weird question that popped in my head, but since the only real space station in existence always keeps itself squeaky clean, I wonder how one that doesn't have cleanliness as high priority ...
5
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3answers
760 views

Can my 3-Dimensional-Space character orbit around a 4-Dimensional-Space planet?

The setting is as follows: a 3-Dimensional-Space(3-DS) character/Spaceship has entered the 4-DS and has encountered a planet (from far away). Now he wants to orbit around it, but the planet is a 4-DS ...
2
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5answers
659 views

Black hole minefields

A civilization has developed black hole guns and Hawking Radiation stabilizers while warring with other civilizations in their stellar neighborhood. Currently, they can create black holes up to 1000 ...
2
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2answers
82 views

How much weaponry would a space carrier have? [closed]

By carrier I mean people This is in the distant future so we can ignore the materials and the time it would take to make it. Lets just say the government have the required materials to make it. The ...
5
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3answers
101 views

Decent present or near future propulsion system for moving around in orbit or changing orbits

For the world I am constructing, I trying to come up with a spacecraft that could be reasonably be built with present or near future technology that could travel around and change orbits relatively ...
15
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11answers
3k views

What would the scientific explanation be for an energy source that can last 130,000 years?

I am playing with the idea of an alien ship landing on earth 130,000 years ago. Over time it's covered up with water and sediments and is eventually discovered in modern day. It contains numerous ...
2
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0answers
94 views

Fusion Orion Drive

Orion drives are awesome. Nobody can deny that. They are however a little outdated and still use pure fission pulse units. Obviously they are in need of an upgrade! A good place to start would be ...
9
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2answers
280 views

Is my space combat system realistic?

The Basics There is no FTL. Most spacecraft use He3-De fusion Torchdrives, capable of performing sustained multi-gee burns. Most torchdrives can also use fuel that is delivered by accelerators ...
-3
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1answer
118 views

How long could a reasonably fit human pilot survive 5g while not using submersive solutions?

For purposes of this discussion, assume NO use of fluid immersion or increasing the pressure of the breathing gas to counteract the external pressures on the pilot, nor putting the pilot in any kind ...
4
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4answers
924 views

How plausible is this spacecraft design?

The idea is that the spacecraft would not have a propellant tank on board, but instead would have a huge, spherical propellant tender which the spacecraft could climb around in order to turn. This ...
10
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2answers
151 views

Heat shields made in space out of rocky source material - cheap way to get cargo to Earth?

Let's say there's an operation one day producing items from asteroid and lunar material in orbit, and they want to ship goods to Earth. They try making cheap heat shields by processing rock and ...
12
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6answers
2k views

Starship wreckage after uncontrolled reentry

Take a large spacecraft. I'm thinking about 1,000,000 metric tons and 3,000,000 cubic metres, but I don't think a factor of 10 either way would change things. The ship is heavily designed and capable ...
4
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3answers
259 views

Huge Acidic Planet [closed]

I have this planet that is mostly composed of an unknown acid. Lets name this acid, Substance X. However we can survive on this planet with basic rubber suits, as this acid cannot burn through rubber ...
11
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4answers
3k views

Is the universe old enough to have an ecosystem of feral self-replicating spacecraft?

Is it possible that, through any plausible history of alien life, and any plausible method of propogation for a self-replicating spacecraft, that the universe, as seen from present day Earth, could be ...
59
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20answers
8k views

Why would there be any use for sea shanties in space?

I understand that sea shanties were a type of work song, and often used to help sailors operate in sync with each other. They've survived as an art form, but so far as I know they don't have any ...
3
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3answers
261 views

Black Hole Weapons - Laser/Particle Beam?

First post here, but longtime lurker :3 My question is this: if you have a civilization that is using black holes as a battery/pseudo power source, and they want to weaponize it -without- shooting the ...
4
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3answers
165 views

Is this space fighter rapid deployment system feasible?

Had this idea for a rapid space fighter deployment system and wanted to see if anybody sees a flaw I'm not. Imagine a big circle in space, and inside that circle are 'stacks' of space fighters facing ...
0
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1answer
106 views

Can cold thrusters be improved for work in space

This belter got Mr.X thinking and it is a stroke of genius this time. What do we do with all that oxygen we get when extracting metals from their oxides? we liquify and use them as a reactive mass of ...
3
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5answers
318 views

How Would Limited Space Travel Change Late Medieval/Early Renaissance-era Warfare?

In my book series, the various planets of the galaxy, give or take, generally have access to late medieval to early renaissance era technology in terms of warfare. That means full plate armor, siege ...
3
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2answers
102 views

Could a self-consuming rocket be useful or cheaper than regular ones?

Technically speaking, all rockets are self-consuming, since they are basically tin cans with fuel. And to carry even less weight with then, they have stages. Allowing not only the rocket to go farther,...
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3answers
167 views

Could a ion thruster work in atmosphere with enough energy?

Well, some days ago I watched a video talking about the Halo transport ship "Pelican", which uses nuclear fusion turbines (don't worry, this question isn't about Halo). And technically, ...
1
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3answers
134 views

Kessler Syndrome, but with extremely small particles

Congratulations! You're the new leader of the future UN(Unified Earth Country governing body), and you want to push for space travel for all. But at this point(in the futures), centuries of space ...
7
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6answers
2k views

Can this warp drive concept be used for actual travel?

In this universe, a "warp drive" is more like a "constant linear velocity" drive. Once it is turned on, the craft travels at exactly the same velocity (speed plus direction), in a ...
7
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5answers
2k views

How would you keep a reverse Hindenburg from exploding?

A colony ship was outfitted to set up operations in the "tiger stripe" ice caves of Enceladus. [sorry!] But its main drive was hacked during a course correction and the ship crashed on ...
1
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0answers
139 views

How much energy can a space ship use internally without overheating?

More thoughts on hard science possibilities for interstellar colonization and the request to check my understanding of physics. Suppose you have a fully self contained colony ship. They have some ...
3
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4answers
414 views

“Low” Efficiency High Power Fusion drives for weapons and “High Efficiency” lower power drives for ships?

I'm currently trying to develop 2 different "classes" of drives for space ship, Expanse style combat with "Low" Efficiency High Power Fusion drives for weapons and "High ...
4
votes
3answers
165 views

One-man Fighter Craft Maneuverability

Looking to design a one-man fighter craft (using CGI) for space-based combat. To be at all useful in such a role the pilot must be able to turn the craft. There are three axes of rotation involved in ...
2
votes
3answers
284 views

Would an Antimatter Engine be dangerous to use around people?

I was considering having the spacecraft in my setting use antimatter-matter spacecraft, but then I realised that at least some of the annihilation of protons and electrons with antiprotons and ...
1
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0answers
67 views

What is the ideal composition for an organic spacecraft? [closed]

One of my interstellar confederations is going to war with another, and has decided to re-purpose the same basic technology they once used to create dyson tree (more like dyson plant-fungus) colonies ...
14
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9answers
7k views

Are nuclear armed missiles effective weapons for spaceborne combat?

So I've read up (NASA has good stuff) that nuclear weapons detonated in space are primarily a radiation hazard. Thermal and concussive effects are negligible, other than I suppose hot fragmentation ...
43
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21answers
6k views

Why are certain spaceships capable of warp at a moment's notice while others require some preparations?

After seeing an advert on my holo-watch about the latest fleet of interstellar spaceships capable of going into warp at the press of a button, I was both amazed and dumbfounded by it Conventional warp ...
4
votes
1answer
137 views

Is there a correct way to describe delta-v for a relativistic spacecraft?

So if I have a spaceship that has an extremely powerful e.g. antimatter rocket (not FTL, relativity applies) and can accelerate up to say 60% of light-speed, then coast to Alpha Centauri, then ...
6
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3answers
400 views

Does the technology to create a laser weapon naturally provide defense from it?

In a space-faring, war-torn world with mostly-realistic technology, the engineers have been developing laser weaponry and defenses. All sides of the war have roughly equal technology. This question ...
4
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1answer
300 views

Fleet tactics & strategies in a hard sci-fi setting with near light speed weapons, ultra hypervelocity kinetics, realistic sensors, and torch ships

I am trying to figure out tactics and strategies for ships that move in a Newtonian regime and use weapons at or near the speed of light. Signals are also at light speed, being lidar and radar; ECM ...
11
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4answers
2k views

How do spaceships compensate for the Doppler shift in their communication frequency?

Assume all radio communication bandwidth used in interstellar communication is standardized to a certain fixed range and all must be frequency modulated but know that no agency is keeping track ...

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