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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2
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2answers
108 views

Of all methods of FTL travel (or as close as one can get to it), what would be the most feasible to have been invented in the next 100 years?

It's the late 2020's, and humanity has expressed an unprecedented and powerful renewal in the interest of space exploration. Sometime between then and the turn of the next century, a practical form of ...
4
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4answers
236 views

Why can an interstellar ship only carry 8 people? [closed]

In my story a civilization has reached the point where they want to colonize another planet. But they encounter a problem. The spaceship can only carry a crew of 8 people. Specifics of the journey: ...
5
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4answers
209 views

How to hide a spaceship visiting Earth?

So, me and the boys have decided to take a trip down to Earth for reasons that matter not be it science, leisure or fleeing persecution. It is no concern how we blend in but our spacecraft poses an ...
2
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4answers
118 views

Perfect centrifuge crew quarters for a interstellar spaceship?

I want to design a realistic interstellar spaceship that uses centrifugal force for only the crew quarters. But while looking up for designs I found the most common ones are the torus or ring design. ...
4
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1answer
81 views

Why don't ejectable fission reactors proliferate if meltdown is still a concern?

Set in the not-so-distant future, interplanetary travels are the norm. Most spaceships are powered by fission reactors, and accidents do happen due to negligence or flaws in the system. It will ...
29
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34answers
9k views

Believable way to make missiles and drones inferior to analog starfighters?

I realize that in space, battles will take place at ultra long ranges due to sensors and the absense of stealth. This makes missiles and or attack drones (remote controlled or AI controlled) the most ...
-1
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1answer
136 views

Ways to kill off characters on a spacecraft by freezing them to death? [closed]

Looking for ways to kill characters off while in space. The scenario has a group of people trapped in a section of a spaceship either during or just prior to landing on a planet. Particularly, are ...
0
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3answers
720 views

Why do every future relativistic spaceships have an atomic clock?

Set in the not so distant future nearly all commercial, private and military spaceships capable of fractional speed of light travel would always have a time keeping device powered by radioactive ...
5
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3answers
200 views

Low gravity space shipyard vs micro gravity shipyard

If you had a device, similar to a Stargate, but that allowed seamless two way transfer, and that could be moved (You could essentially strap a rocket on it, and fuel it from Earth), you could just ...
17
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6answers
10k views

Is it necessary for spaceships to include reverse thrusters for deceleration in space?

Set in the not so distant future, space travel becomes commonplace but is limited within the heliosphere. I'm thinking since it is fuel efficient and more economical to use gravity assist to slow down ...
3
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4answers
185 views

Rapid-repeat re-entry vehicles

In my current writing project, I'm working in a universe where mysterious alien beings travel not directly through space, but through planetary atmospheres via wormholes. These aliens shotgunned ...
26
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18answers
7k views

What measures to put in place to reduce airlock being used for murder?

Consider a futuristic world where space travel and colonisation of the solar system's planets is an everyday reality. In space vessels, the airlocks are used quite often to execute people. It's fairly ...
7
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2answers
127 views

Formula for send and response times of messages at fraction of light speed?

I have a ship that begins the equation traveling at 50 percent the speed of light, but decelerating constantly to finally land on a certain planet (towards which it is moving the entire time). It ...
3
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2answers
136 views

Manufacturing a new propulsion method mid journey

I have an interstellar ship going from earth to a nearby star system using current technology and chemical fuel. The ship has been created and is being managed by a self sufficient android. The ...
2
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1answer
158 views

Message sent to a ship traveling away at 37.5% light speed? [closed]

I have a ship traveling away from Earth at around 37.5 percent of light speed. How long will a message take to reach first Earth, and then a response to reach the ship, both from Earth perspective and ...
3
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1answer
107 views

Spin gravity on an abandoned ship

If a cylindrical rocket ship with a diameter of about 350 meters were spinning on its long axis, would more than just the interior surface of the outer hull have artificial gravity? The ships decks ...
2
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0answers
52 views

Warp speed collision [duplicate]

I was hoping that i can get a more or less science based answer because theoretically warp drive is possible (but we cannot produce the amount of energy that it needs). I am here after this question ...
7
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8answers
260 views

Would there be any place for nuclear powered spaceship in the world proliferated by antimatter propulsion?

Nuclear fission rocket is becoming obsolete and is superseded by the more efficient antimatter engine, in fact there will be no pollution and the efficiency is around 100%. I'm wondering if in a ...
2
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4answers
162 views

Transporting radioactive fuels

Imagine a light spaceship capable of traveling at 0.999c is tasked to tow a radioactive cargo containing millions of tons of polonium and radium, however the container holding the radioactive ...
2
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1answer
101 views

How fast do we spin this for 'One g'

Following on from this question. Question Context : Mars second moon Deimos has been converted into a generation ship. A considerable portion of its mass has been shaved off during the process &...
4
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1answer
122 views

How many people can a sealed 3x1x1 km biome support?

Question Context : Mars second moon Deimos has been converted into a generation ship. A considerable portion of its mass has been shaved off during the process & ejected backwards along its path ...
1
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3answers
115 views

Why does FTL travel require a human who can survive in space? [closed]

Imagine ftl space travel that requires modifications to the human body enabling them to survive in space without a spacesuit, possibly even truly skyclad. What mechanism for ftl travel might require ...
2
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6answers
154 views

Two Structures Adrift In Space

There are 2 planet sized structures that are artificially made with no means of propulsion. Each structure has the approximate mass of Earth but are hollow inside. The inside area is where the people ...
5
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2answers
144 views

Long range laser using wormholes

So, I was recently watching Stargate: Atlantis, and I saw a very interesting concept. In one episode, the villainous Replicators use the stargate network to fire what is essentially a high-powered ...
7
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5answers
3k views

How to resolve the transporter conundrum in a FTL spaceship?

Imagine a spaceship capable of achieving faster than light travel uses several transporters to allow crew members to move around its interior at the constant speed of light. What happens to the crew ...
4
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7answers
2k views

Why don't military spaceships use blockchain technology for ship log? [closed]

Straight to the point, cut out the backstory: If blockchain is so secure and difficult to hack why don't the military spaceship use it for logging important and also non essential events, navigation, ...
7
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5answers
237 views

Capital ship reactor power

I'm trying to not delve too into the sciences so as to keep things fairly suitable for a space opera setting, but I'm trying to figure a few things to a reasonable degree of detail. My question here ...
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6answers
317 views

Why didn't many people see this spaceship?

An alien spaceship opened a wormhole to a location in near-Earth orbit just long enough for a ship to come through. The ship intended to make public, peaceful contact with Earth upon arrival, but ...
4
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4answers
161 views

Properties of a new engine

In my story, I need a spaceplane, that is, a shuttle which can fly in an atmosphere as well as in space. It needs to be able to land from space, and then take off and go to space without refuelling on ...
1
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4answers
194 views

What type of planet where non-aerodynamic space launch vehicles are possible

What would be the approximate gravity, atmosphere etc. of a planet for a species to never make or use launch vehicles with rounded shapes like tapering cylinders, because they make use of the ...
8
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2answers
251 views

Solving the biggest problem of relativistic interstellar spacecrafts

In FTL-free universes, interstellar travel is often done by vessels capable of continuous acceleration (the drives themselves are often magitech), which can use the effects of relativistic time ...
5
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3answers
188 views

How to protect oneself against strong magnetic fields?

Spacecraft in my Scifi setting use strong magnetic fields for many purposes. Fusion containment, magnetic nozzles, gauss guns, magnetic fields as pusher-plates for nuclear pulsed propulsion and ...
7
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3answers
269 views

1g Acceleration Spaceship Design

In my story, a ship is built in orbit around Earth, designed for a 20-person scientific expedition to a planet 11.4 ly away. It will accelerate at 1g for half the distance, then flip around and ...
16
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15answers
7k views

Dodging a Deathbeam travelling at speed of light

There are 2 ships in space about 1 AU1 apart. Ship A fires a deathbeam on Ship B. The deathbeam travels at speed of light with no acceleration (or deceleration) at all and is guaranteed to hit its ...
2
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4answers
366 views

What kind of faster-than-light travel is this and is it at least plausible?

I've had a fairly complex world built up in my head for several years and finally writing a story in it. One thing I'm struggling with is explaining the galaxy's faster-than-light traveling. It's not ...
6
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2answers
199 views

Flash-heating spaceships

I'm working on a version of wormhole-based FTL travel, and one of the side effects of passing through the wormhole is going to be instantaneous heating of every molecule of the thing passing through. ...
6
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5answers
304 views

Are laser-stars the better missile carriers in space warfare?

Laser-stars are war-spacecraft optimized to accommodate a huge laser weapon capable of eliminating an enemy thousands of kilometers away. They will usually have enormous radiators to deal with the ...
13
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9answers
2k views

Most optimal hallways with random gravity inside?

Lets say you have a space ship. This ship will do a lot of maneuvers causing a lot of G forces to go in different directions through the ship. During straight acceleration it pushes the people inside ...
4
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3answers
163 views

Realistically, what type of weapon is the best at delivering a specific radiation in space battle?

It's 20 years into the future, and humanity is (trying to) reaching for the stars. And congratulation, we have met a lot of quirky alien civilization, as per SF tradition. Unfortunately, this isn't ...
3
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3answers
126 views

Launching a spaceship with a portal-based engine?

I previously asked how best to use wormholes for spaceflight, focusing mainly on propulsion in space. I'm now wondering if there's a good way to get off Earth with this ship. The ship needs to be ...
31
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6answers
5k views

What could possibly power an Alcubierre drive?

I understand that in order to compress and expand spacetime, an Alcubierre drive would require some sort of "exotic matter" with a negative energy density. Is that sort of exotic matter purely ...
-3
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1answer
96 views

What happen if a giant cargo ship full of nuclear weapons crash-landed? [closed]

This is a big boi cargo ship we're talking about, the kind so large that it can't "blast off" - it has to be built in space and stay there. It is definitely not death-star sized. Let's say it's as big ...
9
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3answers
2k views

Destroying Hypervelocity Rounds With More Hypervelocity Rounds

In a previous question, I asked about using a scaled-up whipple shield to protect against a 250kg tungsten round traveling at about 60 km/s. The round in question is 'about' 10 cm in diameter and '...
5
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3answers
353 views

How fast could our modern-day world build a rocket to the moon if we threw our resources at it?

For some reason, all the nations in the world have banded together. Their goal? Go to the Moon. Their budget? As much as the planet and humans can throw at it. How fast could we build a reliable and ...
21
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19answers
6k views

Beyond Futuristic Technology for an Alien Warship?

So, it's several hundred years in the future and the majority of humanity now live on artificial habitats, either clustered together into nation-sized groups or scattered individually across the solar ...
8
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4answers
985 views

Can a Scaled-Up Whipple Shield Protect from Hypervelocity Rounds?

Specific situation question: I have a ship with a 'whipple' shield consisting of 5cm of titanium (or a material similar to it) spaced about 50 meters away from the main hull (which is itself pretty ...
6
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3answers
210 views

Nuclear Cannon: Viable Alternative to Coil / Railguns?

In one of my previous questions, I asked about the viability of creating a coilgun for use on a sci-fi warship which would be capable of accelerating a 1000kg projectile to a velocity of 30 km/s or ...
7
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3answers
554 views

If a space ship entered Earth orbit, how likely is it to be seen?

Mostly what it says on the tin. If a spaceship, let's say about 200 meters long and 100 meters wide (made of modern materials) was approaching Earth and slowing down (say from 100 km/s to 3km/s), how ...
7
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9answers
569 views

What are the Limits of Laser Weapons in Space?

In my eternal quest to model a decently-realistic sci-fi space combat system, I've run through the limitations of particle weapons, magnetic accelerator cannons, and fusion rockets. Now it's time to ...
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1answer
117 views

Is liquid metallic hydrogen, when used as a spacecraft fuel, a chemical fuel? [closed]

Is it scientifically sound to call liquid metallic hydrogen a chemical rocket fuel?

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